Initial Commit

276 files changed, 31686 insertions, 0 deletions

diff --git a/assets/php/vendor/react/cache/.gitignore b/assets/php/vendor/react/cache/.gitignore
new file mode 100644
index 0000000..987e2a2
--- /dev/null
+++ b/assets/php/vendor/react/cache/.gitignore
@@ -0,0 +1,2 @@
+composer.lock
+vendor
diff --git a/assets/php/vendor/react/cache/.travis.yml b/assets/php/vendor/react/cache/.travis.yml
new file mode 100644
index 0000000..290df75
--- /dev/null
+++ b/assets/php/vendor/react/cache/.travis.yml
@@ -0,0 +1,25 @@
+language: php
+
+php:
+# - 5.3 # requires old distro, see below
+  - 5.4
+  - 5.5
+  - 5.6
+  - 7
+  - hhvm
+
+# lock distro so new future defaults will not break the build
+dist: trusty
+
+matrix:
+  include:
+    - php: 5.3
+      dist: precise
+
+sudo: false
+
+install:
+  - composer install --no-interaction
+  
+script:
+  - ./vendor/bin/phpunit --coverage-text
diff --git a/assets/php/vendor/react/cache/CHANGELOG.md b/assets/php/vendor/react/cache/CHANGELOG.md
new file mode 100644
index 0000000..19d1801
--- /dev/null
+++ b/assets/php/vendor/react/cache/CHANGELOG.md
@@ -0,0 +1,35 @@
+# Changelog
+
+## 0.4.2 (2017-12-20)
+
+*   Improve documentation with usage and installation instructions
+    (#10 by @clue)
+
+*   Improve test suite by adding PHPUnit to `require-dev` and
+    add forward compatibility with PHPUnit 5 and PHPUnit 6 and
+    sanitize Composer autoload paths
+    (#14 by @shaunbramley and #12 and #18 by @clue)
+
+## 0.4.1 (2016-02-25)
+
+* Repository maintenance, split off from main repo, improve test suite and documentation
+* First class support for PHP7 and HHVM (#9 by @clue)
+* Adjust compatibility to 5.3 (#7 by @clue)
+
+## 0.4.0 (2014-02-02)
+
+* BC break: Bump minimum PHP version to PHP 5.4, remove 5.3 specific hacks
+* BC break: Update to React/Promise 2.0
+* Dependency: Autoloading and filesystem structure now PSR-4 instead of PSR-0
+
+## 0.3.2 (2013-05-10)
+
+* Version bump
+
+## 0.3.0 (2013-04-14)
+
+* Version bump
+
+## 0.2.6 (2012-12-26)
+
+* Feature: New cache component, used by DNS
diff --git a/assets/php/vendor/react/cache/LICENSE b/assets/php/vendor/react/cache/LICENSE
new file mode 100644
index 0000000..a808108
--- /dev/null
+++ b/assets/php/vendor/react/cache/LICENSE
@@ -0,0 +1,19 @@
+Copyright (c) 2012 Igor Wiedler, Chris Boden
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/assets/php/vendor/react/cache/README.md b/assets/php/vendor/react/cache/README.md
new file mode 100644
index 0000000..70ad40a
--- /dev/null
+++ b/assets/php/vendor/react/cache/README.md
@@ -0,0 +1,171 @@
+# Cache Component
+
+[![Build Status](https://secure.travis-ci.org/reactphp/cache.png?branch=master)](http://travis-ci.org/reactphp/cache) [![Code Climate](https://codeclimate.com/github/reactphp/cache/badges/gpa.svg)](https://codeclimate.com/github/reactphp/cache)
+
+Async, [Promise](https://github.com/reactphp/promise)-based cache interface
+for [ReactPHP](https://reactphp.org/).
+
+The cache component provides a
+[Promise](https://github.com/reactphp/promise)-based
+[`CacheInterface`](#cacheinterface) and an in-memory [`ArrayCache`](#arraycache)
+implementation of that.
+This allows consumers to type hint against the interface and third parties to
+provide alternate implementations.
+
+**Table of Contents**
+
+* [Usage](#usage)
+  * [CacheInterface](#cacheinterface)
+    * [get()](#get)
+    * [set()](#set)
+    * [remove()](#remove)
+  * [ArrayCache](#arraycache)
+* [Common usage](#common-usage)
+  * [Fallback get](#fallback-get)
+  * [Fallback-get-and-set](#fallback-get-and-set)
+* [Install](#install)
+* [Tests](#tests)
+* [License](#license)
+
+## Usage
+
+### CacheInterface
+
+The `CacheInterface` describes the main interface of this component.
+This allows consumers to type hint against the interface and third parties to
+provide alternate implementations.
+
+#### get()
+
+```php
+$cache
+    ->get('foo')
+    ->then('var_dump');
+```
+
+This example fetches the value of the key `foo` and passes it to the
+`var_dump` function. You can use any of the composition provided by
+[promises](https://github.com/reactphp/promise).
+
+If the key `foo` does not exist, the promise will be rejected.
+
+#### set()
+
+```php
+$cache->set('foo', 'bar');
+```
+
+This example eventually sets the value of the key `foo` to `bar`. If it
+already exists, it is overridden. No guarantees are made as to when the cache
+value is set. If the cache implementation has to go over the network to store
+it, it may take a while.
+
+#### remove()
+
+```php
+$cache->remove('foo');
+```
+
+This example eventually removes the key `foo` from the cache. As with `set`,
+this may not happen instantly.
+
+### ArrayCache
+
+The `ArrayCache` provides an in-memory implementation of the
+[`CacheInterface`](#cacheinterface).
+
+```php
+$cache = new ArrayCache();
+
+$cache->set('foo', 'bar');
+```
+
+## Common usage
+
+### Fallback get
+
+A common use case of caches is to attempt fetching a cached value and as a
+fallback retrieve it from the original data source if not found. Here is an
+example of that:
+
+```php
+$cache
+    ->get('foo')
+    ->then(null, 'getFooFromDb')
+    ->then('var_dump');
+```
+
+First an attempt is made to retrieve the value of `foo`. A promise rejection
+handler of the function `getFooFromDb` is registered. `getFooFromDb` is a
+function (can be any PHP callable) that will be called if the key does not
+exist in the cache.
+
+`getFooFromDb` can handle the missing key by returning a promise for the
+actual value from the database (or any other data source). As a result, this
+chain will correctly fall back, and provide the value in both cases.
+
+### Fallback get and set
+
+To expand on the fallback get example, often you want to set the value on the
+cache after fetching it from the data source.
+
+```php
+$cache
+    ->get('foo')
+    ->then(null, array($this, 'getAndCacheFooFromDb'))
+    ->then('var_dump');
+
+public function getAndCacheFooFromDb()
+{
+    return $this->db
+        ->get('foo')
+        ->then(array($this, 'cacheFooFromDb'));
+}
+
+public function cacheFooFromDb($foo)
+{
+    $this->cache->set('foo', $foo);
+
+    return $foo;
+}
+```
+
+By using chaining you can easily conditionally cache the value if it is
+fetched from the database.
+
+## Install
+
+The recommended way to install this library is [through Composer](https://getcomposer.org).
+[New to Composer?](https://getcomposer.org/doc/00-intro.md)
+
+This will install the latest supported version:
+
+```bash
+$ composer require react/cache:^0.4.2
+```
+
+See also the [CHANGELOG](CHANGELOG.md) for details about version upgrades.
+
+This project aims to run on any platform and thus does not require any PHP
+extensions and supports running on legacy PHP 5.3 through current PHP 7+ and
+HHVM.
+It's *highly recommended to use PHP 7+* for this project.
+
+## Tests
+
+To run the test suite, you first need to clone this repo and then install all
+dependencies [through Composer](https://getcomposer.org):
+
+```bash
+$ composer install
+```
+
+To run the test suite, go to the project root and run:
+
+```bash
+$ php vendor/bin/phpunit
+```
+
+## License
+
+MIT, see [LICENSE file](LICENSE).
diff --git a/assets/php/vendor/react/cache/composer.json b/assets/php/vendor/react/cache/composer.json
new file mode 100644
index 0000000..51573b6
--- /dev/null
+++ b/assets/php/vendor/react/cache/composer.json
@@ -0,0 +1,19 @@
+{
+    "name": "react/cache",
+    "description": "Async, Promise-based cache interface for ReactPHP",
+    "keywords": ["cache", "caching", "promise", "ReactPHP"],
+    "license": "MIT",
+    "require": {
+        "php": ">=5.3.0",
+        "react/promise": "~2.0|~1.1"
+    },
+    "autoload": {
+        "psr-4": { "React\\Cache\\": "src/" }
+    },
+    "autoload-dev": {
+        "psr-4": { "React\\Tests\\Cache\\": "tests/" }
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^6.4 || ^5.7 || ^4.8.35"
+    }
+}
diff --git a/assets/php/vendor/react/cache/phpunit.xml.dist b/assets/php/vendor/react/cache/phpunit.xml.dist
new file mode 100644
index 0000000..d02182f
--- /dev/null
+++ b/assets/php/vendor/react/cache/phpunit.xml.dist
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit colors="true"
+         convertErrorsToExceptions="true"
+         convertNoticesToExceptions="true"
+         convertWarningsToExceptions="true"
+         bootstrap="vendor/autoload.php"
+>
+    <testsuites>
+        <testsuite name="React Test Suite">
+            <directory>./tests/</directory>
+        </testsuite>
+    </testsuites>
+
+    <filter>
+        <whitelist>
+            <directory>./src/</directory>
+        </whitelist>
+    </filter>
+</phpunit>
diff --git a/assets/php/vendor/react/cache/src/ArrayCache.php b/assets/php/vendor/react/cache/src/ArrayCache.php
new file mode 100644
index 0000000..03dcc15
--- /dev/null
+++ b/assets/php/vendor/react/cache/src/ArrayCache.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace React\Cache;
+
+use React\Promise;
+
+class ArrayCache implements CacheInterface
+{
+    private $data = array();
+
+    public function get($key)
+    {
+        if (!isset($this->data[$key])) {
+            return Promise\reject();
+        }
+
+        return Promise\resolve($this->data[$key]);
+    }
+
+    public function set($key, $value)
+    {
+        $this->data[$key] = $value;
+    }
+
+    public function remove($key)
+    {
+        unset($this->data[$key]);
+    }
+}
diff --git a/assets/php/vendor/react/cache/src/CacheInterface.php b/assets/php/vendor/react/cache/src/CacheInterface.php
new file mode 100644
index 0000000..fd5f2d5
--- /dev/null
+++ b/assets/php/vendor/react/cache/src/CacheInterface.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace React\Cache;
+
+interface CacheInterface
+{
+    // @return React\Promise\PromiseInterface
+    public function get($key);
+
+    public function set($key, $value);
+
+    public function remove($key);
+}
diff --git a/assets/php/vendor/react/cache/tests/ArrayCacheTest.php b/assets/php/vendor/react/cache/tests/ArrayCacheTest.php
new file mode 100644
index 0000000..eec3739
--- /dev/null
+++ b/assets/php/vendor/react/cache/tests/ArrayCacheTest.php
@@ -0,0 +1,60 @@
+<?php
+
+namespace React\Tests\Cache;
+
+use React\Cache\ArrayCache;
+
+class ArrayCacheTest extends TestCase
+{
+    private $cache;
+
+    public function setUp()
+    {
+        $this->cache = new ArrayCache();
+    }
+
+    /** @test */
+    public function getShouldRejectPromiseForNonExistentKey()
+    {
+        $this->cache
+            ->get('foo')
+            ->then(
+                $this->expectCallableNever(),
+                $this->expectCallableOnce()
+            );
+    }
+
+    /** @test */
+    public function setShouldSetKey()
+    {
+        $this->cache
+            ->set('foo', 'bar');
+
+        $success = $this->createCallableMock();
+        $success
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with('bar');
+
+        $this->cache
+            ->get('foo')
+            ->then($success);
+    }
+
+    /** @test */
+    public function removeShouldRemoveKey()
+    {
+        $this->cache
+            ->set('foo', 'bar');
+
+        $this->cache
+            ->remove('foo');
+
+        $this->cache
+            ->get('foo')
+            ->then(
+                $this->expectCallableNever(),
+                $this->expectCallableOnce()
+            );
+    }
+}
diff --git a/assets/php/vendor/react/cache/tests/CallableStub.php b/assets/php/vendor/react/cache/tests/CallableStub.php
new file mode 100644
index 0000000..2f547cd
--- /dev/null
+++ b/assets/php/vendor/react/cache/tests/CallableStub.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace React\Tests\Cache;
+
+class CallableStub
+{
+    public function __invoke()
+    {
+    }
+}
diff --git a/assets/php/vendor/react/cache/tests/TestCase.php b/assets/php/vendor/react/cache/tests/TestCase.php
new file mode 100644
index 0000000..aa449f2
--- /dev/null
+++ b/assets/php/vendor/react/cache/tests/TestCase.php
@@ -0,0 +1,43 @@
+<?php
+
+namespace React\Tests\Cache;
+
+use PHPUnit\Framework\TestCase as BaseTestCase;
+
+class TestCase extends BaseTestCase
+{
+    protected function expectCallableExactly($amount)
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->exactly($amount))
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    protected function expectCallableOnce()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    protected function expectCallableNever()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->never())
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    protected function createCallableMock()
+    {
+        return $this->getMockBuilder('React\Tests\Cache\CallableStub')->getMock();
+    }
+}
diff --git a/assets/php/vendor/react/dns/.gitignore b/assets/php/vendor/react/dns/.gitignore
new file mode 100644
index 0000000..19982ea
--- /dev/null
+++ b/assets/php/vendor/react/dns/.gitignore
@@ -0,0 +1,2 @@
+composer.lock
+vendor
\ No newline at end of file
diff --git a/assets/php/vendor/react/dns/.travis.yml b/assets/php/vendor/react/dns/.travis.yml
new file mode 100644
index 0000000..41921e3
--- /dev/null
+++ b/assets/php/vendor/react/dns/.travis.yml
@@ -0,0 +1,29 @@
+language: php
+
+php:
+# - 5.3 # requires old distro, see below
+  - 5.4
+  - 5.5
+  - 5.6
+  - 7.0
+  - 7.1
+  - 7.2
+  - hhvm # ignore errors, see below
+
+# lock distro so new future defaults will not break the build
+dist: trusty
+
+matrix:
+  include:
+    - php: 5.3
+      dist: precise
+  allow_failures:
+    - php: hhvm
+
+sudo: false
+
+install:
+  - composer install --no-interaction
+
+script:
+  - vendor/bin/phpunit --coverage-text
diff --git a/assets/php/vendor/react/dns/CHANGELOG.md b/assets/php/vendor/react/dns/CHANGELOG.md
new file mode 100644
index 0000000..adad0a7
--- /dev/null
+++ b/assets/php/vendor/react/dns/CHANGELOG.md
@@ -0,0 +1,179 @@
+# Changelog
+
+## 0.4.13 (2018-02-27)
+
+*   Add `Config::loadSystemConfigBlocking()` to load default system config
+    and support parsing DNS config on all supported platforms
+    (`/etc/resolv.conf` on Unix/Linux/Mac and WMIC on Windows)
+    (#92, #93, #94 and #95 by @clue)
+
+    ```php
+    $config = Config::loadSystemConfigBlocking();
+    $server = $config->nameservers ? reset($config->nameservers) : '8.8.8.8';
+    ```
+
+*   Remove unneeded cyclic dependency on react/socket
+    (#96 by @clue)
+
+## 0.4.12 (2018-01-14)
+
+*   Improve test suite by adding forward compatibility with PHPUnit 6,
+    test against PHP 7.2, fix forward compatibility with upcoming EventLoop releases,
+    add test group to skip integration tests relying on internet connection
+    and add minor documentation improvements.
+    (#85 and #87 by @carusogabriel, #88 and #89 by @clue and #83 by @jsor)
+
+## 0.4.11 (2017-08-25)
+
+*   Feature: Support resolving from default hosts file
+    (#75, #76 and #77 by @clue)
+
+    This means that resolving hosts such as `localhost` will now work as
+    expected across all platforms with no changes required:
+
+    ```php
+    $resolver->resolve('localhost')->then(function ($ip) {
+        echo 'IP: ' . $ip;
+    });
+    ```
+
+    The new `HostsExecutor` exists for advanced usage and is otherwise used
+    internally for this feature.
+
+## 0.4.10 (2017-08-10)
+
+* Feature: Forward compatibility with EventLoop v1.0 and v0.5 and 
+  lock minimum dependencies and work around circular dependency for tests
+  (#70 and #71 by @clue)
+
+* Fix: Work around DNS timeout issues for Windows users
+  (#74 by @clue)
+
+* Documentation and examples for advanced usage
+  (#66 by @WyriHaximus)
+
+* Remove broken TCP code, do not retry with invalid TCP query
+  (#73 by @clue)
+
+* Improve test suite by fixing HHVM build for now again and ignore future HHVM build errors and
+  lock Travis distro so new defaults will not break the build and
+  fix failing tests for PHP 7.1
+  (#68 by @WyriHaximus and #69 and #72 by @clue)
+
+## 0.4.9 (2017-05-01)
+
+* Feature: Forward compatibility with upcoming Socket v1.0 and v0.8
+  (#61 by @clue)
+
+## 0.4.8 (2017-04-16)
+
+* Feature: Add support for the AAAA record type to the protocol parser
+  (#58 by @othillo)
+
+* Feature: Add support for the PTR record type to the protocol parser
+  (#59 by @othillo)
+
+## 0.4.7 (2017-03-31)
+
+* Feature: Forward compatibility with upcoming Socket v0.6 and v0.7 component
+  (#57 by @clue)
+
+## 0.4.6 (2017-03-11)
+
+* Fix: Fix DNS timeout issues for Windows users and add forward compatibility
+  with Stream v0.5 and upcoming v0.6
+  (#53 by @clue)
+
+* Improve test suite by adding PHPUnit to `require-dev`
+  (#54 by @clue)
+
+## 0.4.5 (2017-03-02)
+
+* Fix: Ensure we ignore the case of the answer
+  (#51 by @WyriHaximus)
+
+* Feature: Add `TimeoutExecutor` and simplify internal APIs to allow internal
+  code re-use for upcoming versions.
+  (#48 and #49 by @clue)
+
+## 0.4.4 (2017-02-13)
+
+* Fix: Fix handling connection and stream errors
+  (#45 by @clue)
+
+* Feature: Add examples and forward compatibility with upcoming Socket v0.5 component
+  (#46 and #47 by @clue)
+
+## 0.4.3 (2016-07-31)
+
+* Feature: Allow for cache adapter injection (#38 by @WyriHaximus)
+
+  ```php
+  $factory = new React\Dns\Resolver\Factory();
+
+  $cache = new MyCustomCacheInstance();
+  $resolver = $factory->createCached('8.8.8.8', $loop, $cache);
+  ```
+
+* Feature: Support Promise cancellation (#35 by @clue)
+
+  ```php
+  $promise = $resolver->resolve('reactphp.org');
+
+  $promise->cancel();
+  ```
+
+## 0.4.2 (2016-02-24)
+
+* Repository maintenance, split off from main repo, improve test suite and documentation
+* First class support for PHP7 and HHVM (#34 by @clue)
+* Adjust compatibility to 5.3 (#30 by @clue)
+
+## 0.4.1 (2014-04-13)
+
+* Bug fix: Fixed PSR-4 autoload path (@marcj/WyriHaximus)
+
+## 0.4.0 (2014-02-02)
+
+* BC break: Bump minimum PHP version to PHP 5.4, remove 5.3 specific hacks
+* BC break: Update to React/Promise 2.0
+* Bug fix: Properly resolve CNAME aliases
+* Dependency: Autoloading and filesystem structure now PSR-4 instead of PSR-0
+* Bump React dependencies to v0.4
+
+## 0.3.2 (2013-05-10)
+
+* Feature: Support default port for IPv6 addresses (@clue)
+
+## 0.3.0 (2013-04-14)
+
+* Bump React dependencies to v0.3
+
+## 0.2.6 (2012-12-26)
+
+* Feature: New cache component, used by DNS
+
+## 0.2.5 (2012-11-26)
+
+* Version bump
+
+## 0.2.4 (2012-11-18)
+
+* Feature: Change to promise-based API (@jsor)
+
+## 0.2.3 (2012-11-14)
+
+* Version bump
+
+## 0.2.2 (2012-10-28)
+
+* Feature: DNS executor timeout handling (@arnaud-lb)
+* Feature: DNS retry executor (@arnaud-lb)
+
+## 0.2.1 (2012-10-14)
+
+* Minor adjustments to DNS parser
+
+## 0.2.0 (2012-09-10)
+
+* Feature: DNS resolver
diff --git a/assets/php/vendor/react/dns/LICENSE b/assets/php/vendor/react/dns/LICENSE
new file mode 100644
index 0000000..a808108
--- /dev/null
+++ b/assets/php/vendor/react/dns/LICENSE
@@ -0,0 +1,19 @@
+Copyright (c) 2012 Igor Wiedler, Chris Boden
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/assets/php/vendor/react/dns/README.md b/assets/php/vendor/react/dns/README.md
new file mode 100644
index 0000000..ed86667
--- /dev/null
+++ b/assets/php/vendor/react/dns/README.md
@@ -0,0 +1,209 @@
+# Dns
+
+[![Build Status](https://travis-ci.org/reactphp/dns.svg?branch=master)](https://travis-ci.org/reactphp/dns)
+
+Async DNS resolver for [ReactPHP](https://reactphp.org/).
+
+The main point of the DNS component is to provide async DNS resolution.
+However, it is really a toolkit for working with DNS messages, and could
+easily be used to create a DNS server.
+
+**Table of contents**
+
+* [Basic usage](#basic-usage)
+* [Caching](#caching)
+  * [Custom cache adapter](#custom-cache-adapter)
+* [Advanced usage](#advanced-usage)
+  * [HostsFileExecutor](#hostsfileexecutor)
+* [Install](#install)
+* [Tests](#tests)
+* [License](#license)
+* [References](#references)
+
+## Basic usage
+
+The most basic usage is to just create a resolver through the resolver
+factory. All you need to give it is a nameserver, then you can start resolving
+names, baby!
+
+```php
+$loop = React\EventLoop\Factory::create();
+
+$config = React\Dns\Config\Config::loadSystemConfigBlocking();
+$server = $config->nameservers ? reset($config->nameservers) : '8.8.8.8';
+
+$factory = new React\Dns\Resolver\Factory();
+$dns = $factory->create($server, $loop);
+
+$dns->resolve('igor.io')->then(function ($ip) {
+    echo "Host: $ip\n";
+});
+
+$loop->run();
+```
+
+See also the [first example](examples).
+
+The `Config` class can be used to load the system default config. This is an
+operation that may access the filesystem and block. Ideally, this method should
+thus be executed only once before the loop starts and not repeatedly while it is
+running.
+Note that this class may return an *empty* configuration if the system config
+can not be loaded. As such, you'll likely want to apply a default nameserver
+as above if none can be found.
+
+> Note that the factory loads the hosts file from the filesystem once when
+  creating the resolver instance.
+  Ideally, this method should thus be executed only once before the loop starts
+  and not repeatedly while it is running.
+
+Pending DNS queries can be cancelled by cancelling its pending promise like so:
+
+```php
+$promise = $resolver->resolve('reactphp.org');
+
+$promise->cancel();
+```
+
+But there's more.
+
+## Caching
+
+You can cache results by configuring the resolver to use a `CachedExecutor`:
+
+```php
+$loop = React\EventLoop\Factory::create();
+
+$config = React\Dns\Config\Config::loadSystemConfigBlocking();
+$server = $config->nameservers ? reset($config->nameservers) : '8.8.8.8';
+
+$factory = new React\Dns\Resolver\Factory();
+$dns = $factory->createCached($server, $loop);
+
+$dns->resolve('igor.io')->then(function ($ip) {
+    echo "Host: $ip\n";
+});
+
+...
+
+$dns->resolve('igor.io')->then(function ($ip) {
+    echo "Host: $ip\n";
+});
+
+$loop->run();
+```
+
+If the first call returns before the second, only one query will be executed.
+The second result will be served from an in memory cache.
+This is particularly useful for long running scripts where the same hostnames
+have to be looked up multiple times.
+
+See also the [third example](examples).
+
+### Custom cache adapter
+
+By default, the above will use an in memory cache.
+
+You can also specify a custom cache implementing [`CacheInterface`](https://github.com/reactphp/cache) to handle the record cache instead:
+
+```php
+$cache = new React\Cache\ArrayCache();
+$loop = React\EventLoop\Factory::create();
+$factory = new React\Dns\Resolver\Factory();
+$dns = $factory->createCached('8.8.8.8', $loop, $cache);
+```
+
+See also the wiki for possible [cache implementations](https://github.com/reactphp/react/wiki/Users#cache-implementations).
+
+## Advanced Usage
+
+For more advanced usages one can utilize the `React\Dns\Query\Executor` directly.
+The following example looks up the `IPv6` address for `igor.io`.
+
+```php
+$loop = Factory::create();
+
+$executor = new Executor($loop, new Parser(), new BinaryDumper(), null);
+
+$executor->query(
+    '8.8.8.8:53', 
+    new Query($name, Message::TYPE_AAAA, Message::CLASS_IN, time())
+)->done(function (Message $message) {
+    foreach ($message->answers as $answer) {
+        echo 'IPv6: ' . $answer->data . PHP_EOL;
+    }
+}, 'printf');
+
+$loop->run();
+
+```
+
+See also the [fourth example](examples).
+
+### HostsFileExecutor
+
+Note that the above `Executor` class always performs an actual DNS query.
+If you also want to take entries from your hosts file into account, you may
+use this code:
+
+```php
+$hosts = \React\Dns\Config\HostsFile::loadFromPathBlocking();
+
+$executor = new Executor($loop, new Parser(), new BinaryDumper(), null);
+$executor = new HostsFileExecutor($hosts, $executor);
+
+$executor->query(
+    '8.8.8.8:53', 
+    new Query('localhost', Message::TYPE_A, Message::CLASS_IN, time())
+);
+```
+
+## Install
+
+The recommended way to install this library is [through Composer](https://getcomposer.org).
+[New to Composer?](https://getcomposer.org/doc/00-intro.md)
+
+This will install the latest supported version:
+
+```bash
+$ composer require react/dns:^0.4.13
+```
+
+See also the [CHANGELOG](CHANGELOG.md) for details about version upgrades.
+
+This project aims to run on any platform and thus does not require any PHP
+extensions and supports running on legacy PHP 5.3 through current PHP 7+ and
+HHVM.
+It's *highly recommended to use PHP 7+* for this project.
+
+## Tests
+
+To run the test suite, you first need to clone this repo and then install all
+dependencies [through Composer](https://getcomposer.org):
+
+```bash
+$ composer install
+```
+
+To run the test suite, go to the project root and run:
+
+```bash
+$ php vendor/bin/phpunit
+```
+
+The test suite also contains a number of functional integration tests that rely
+on a stable internet connection.
+If you do not want to run these, they can simply be skipped like this:
+
+```bash
+$ php vendor/bin/phpunit --exclude-group internet
+```
+
+## License
+
+MIT, see [LICENSE file](LICENSE).
+
+## References
+
+* [RFC 1034](https://tools.ietf.org/html/rfc1034) Domain Names - Concepts and Facilities
+* [RFC 1035](https://tools.ietf.org/html/rfc1035) Domain Names - Implementation and Specification
diff --git a/assets/php/vendor/react/dns/composer.json b/assets/php/vendor/react/dns/composer.json
new file mode 100644
index 0000000..510a43c
--- /dev/null
+++ b/assets/php/vendor/react/dns/composer.json
@@ -0,0 +1,24 @@
+{
+    "name": "react/dns",
+    "description": "Async DNS resolver for ReactPHP",
+    "keywords": ["dns", "dns-resolver", "ReactPHP", "async"],
+    "license": "MIT",
+    "require": {
+        "php": ">=5.3.0",
+        "react/cache": "~0.4.0|~0.3.0",
+        "react/event-loop": "^1.0 || ^0.5 || ^0.4 || ^0.3.5",
+        "react/promise": "^2.1 || ^1.2.1",
+        "react/promise-timer": "^1.2",
+        "react/stream": "^1.0 || ^0.7 || ^0.6 || ^0.5 || ^0.4.5"
+    },
+    "require-dev": {
+        "clue/block-react": "^1.2",
+        "phpunit/phpunit": "^6.4 || ^5.7 || ^4.8.35"
+    },
+    "autoload": {
+        "psr-4": { "React\\Dns\\": "src" }
+    },
+    "autoload-dev": {
+        "psr-4": { "React\\Tests\\Dns\\": "tests" }
+    }
+}
diff --git a/assets/php/vendor/react/dns/examples/01-one.php b/assets/php/vendor/react/dns/examples/01-one.php
new file mode 100644
index 0000000..5db164f
--- /dev/null
+++ b/assets/php/vendor/react/dns/examples/01-one.php
@@ -0,0 +1,22 @@
+<?php
+
+use React\Dns\Config\Config;
+use React\Dns\Resolver\Factory;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = React\EventLoop\Factory::create();
+
+$config = Config::loadSystemConfigBlocking();
+$server = $config->nameservers ? reset($config->nameservers) : '8.8.8.8';
+
+$factory = new Factory();
+$resolver = $factory->create($server, $loop);
+
+$name = isset($argv[1]) ? $argv[1] : 'www.google.com';
+
+$resolver->resolve($name)->then(function ($ip) use ($name) {
+    echo 'IP for ' . $name . ': ' . $ip . PHP_EOL;
+}, 'printf');
+
+$loop->run();
diff --git a/assets/php/vendor/react/dns/examples/02-concurrent.php b/assets/php/vendor/react/dns/examples/02-concurrent.php
new file mode 100644
index 0000000..87e3f5c
--- /dev/null
+++ b/assets/php/vendor/react/dns/examples/02-concurrent.php
@@ -0,0 +1,27 @@
+<?php
+
+use React\Dns\Config\Config;
+use React\Dns\Resolver\Factory;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = React\EventLoop\Factory::create();
+
+$config = Config::loadSystemConfigBlocking();
+$server = $config->nameservers ? reset($config->nameservers) : '8.8.8.8';
+
+$factory = new Factory();
+$resolver = $factory->create($server, $loop);
+
+$names = array_slice($argv, 1);
+if (!$names) {
+    $names = array('google.com', 'www.google.com', 'gmail.com');
+}
+
+foreach ($names as $name) {
+    $resolver->resolve($name)->then(function ($ip) use ($name) {
+        echo 'IP for ' . $name . ': ' . $ip . PHP_EOL;
+    }, 'printf');
+}
+
+$loop->run();
diff --git a/assets/php/vendor/react/dns/examples/03-cached.php b/assets/php/vendor/react/dns/examples/03-cached.php
new file mode 100644
index 0000000..e76a27c
--- /dev/null
+++ b/assets/php/vendor/react/dns/examples/03-cached.php
@@ -0,0 +1,40 @@
+<?php
+
+use React\Dns\Config\Config;
+use React\Dns\Resolver\Factory;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = React\EventLoop\Factory::create();
+
+$config = Config::loadSystemConfigBlocking();
+$server = $config->nameservers ? reset($config->nameservers) : '8.8.8.8';
+
+$factory = new Factory();
+$resolver = $factory->createCached($server, $loop);
+
+$name = isset($argv[1]) ? $argv[1] : 'www.google.com';
+
+$resolver->resolve($name)->then(function ($ip) use ($name) {
+    echo 'IP for ' . $name . ': ' . $ip . PHP_EOL;
+}, 'printf');
+
+$loop->addTimer(1.0, function() use ($name, $resolver) {
+    $resolver->resolve($name)->then(function ($ip) use ($name) {
+        echo 'IP for ' . $name . ': ' . $ip . PHP_EOL;
+    }, 'printf');
+});
+
+$loop->addTimer(2.0, function() use ($name, $resolver) {
+    $resolver->resolve($name)->then(function ($ip) use ($name) {
+        echo 'IP for ' . $name . ': ' . $ip . PHP_EOL;
+    }, 'printf');
+});
+
+$loop->addTimer(3.0, function() use ($name, $resolver) {
+    $resolver->resolve($name)->then(function ($ip) use ($name) {
+        echo 'IP for ' . $name . ': ' . $ip . PHP_EOL;
+    }, 'printf');
+});
+
+$loop->run();
diff --git a/assets/php/vendor/react/dns/examples/04-query-a-and-aaaa.php b/assets/php/vendor/react/dns/examples/04-query-a-and-aaaa.php
new file mode 100644
index 0000000..6c46bbf
--- /dev/null
+++ b/assets/php/vendor/react/dns/examples/04-query-a-and-aaaa.php
@@ -0,0 +1,32 @@
+<?php
+
+use React\Dns\Model\Message;
+use React\Dns\Protocol\BinaryDumper;
+use React\Dns\Protocol\Parser;
+use React\Dns\Query\Executor;
+use React\Dns\Query\Query;
+use React\EventLoop\Factory;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = Factory::create();
+
+$executor = new Executor($loop, new Parser(), new BinaryDumper(), null);
+
+$name = isset($argv[1]) ? $argv[1] : 'www.google.com';
+
+$ipv4Query = new Query($name, Message::TYPE_A, Message::CLASS_IN, time());
+$ipv6Query = new Query($name, Message::TYPE_AAAA, Message::CLASS_IN, time());
+
+$executor->query('8.8.8.8:53', $ipv4Query)->done(function (Message $message) {
+    foreach ($message->answers as $answer) {
+        echo 'IPv4: ' . $answer->data . PHP_EOL;
+    }
+}, 'printf');
+$executor->query('8.8.8.8:53', $ipv6Query)->done(function (Message $message) {
+    foreach ($message->answers as $answer) {
+        echo 'IPv6: ' . $answer->data . PHP_EOL;
+    }
+}, 'printf');
+
+$loop->run();
diff --git a/assets/php/vendor/react/dns/phpunit.xml.dist b/assets/php/vendor/react/dns/phpunit.xml.dist
new file mode 100644
index 0000000..13d3fab
--- /dev/null
+++ b/assets/php/vendor/react/dns/phpunit.xml.dist
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit backupGlobals="false"
+         backupStaticAttributes="false"
+         colors="true"
+         convertErrorsToExceptions="true"
+         convertNoticesToExceptions="true"
+         convertWarningsToExceptions="true"
+         processIsolation="false"
+         stopOnFailure="false"
+         syntaxCheck="false"
+         bootstrap="vendor/autoload.php"
+>
+    <testsuites>
+        <testsuite name="React Test Suite">
+            <directory>./tests/</directory>
+        </testsuite>
+    </testsuites>
+
+    <filter>
+        <whitelist>
+            <directory>./src/</directory>
+        </whitelist>
+    </filter>
+</phpunit>
diff --git a/assets/php/vendor/react/dns/src/BadServerException.php b/assets/php/vendor/react/dns/src/BadServerException.php
new file mode 100644
index 0000000..3bf50f1
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/BadServerException.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace React\Dns;
+
+class BadServerException extends \Exception
+{
+}
diff --git a/assets/php/vendor/react/dns/src/Config/Config.php b/assets/php/vendor/react/dns/src/Config/Config.php
new file mode 100644
index 0000000..c82635d
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Config/Config.php
@@ -0,0 +1,127 @@
+<?php
+
+namespace React\Dns\Config;
+
+use RuntimeException;
+
+class Config
+{
+    /**
+     * Loads the system DNS configuration
+     *
+     * Note that this method may block while loading its internal files and/or
+     * commands and should thus be used with care! While this should be
+     * relatively fast for most systems, it remains unknown if this may block
+     * under certain circumstances. In particular, this method should only be
+     * executed before the loop starts, not while it is running.
+     *
+     * Note that this method will try to access its files and/or commands and
+     * try to parse its output. Currently, this will only parse valid nameserver
+     * entries from its output and will ignore all other output without
+     * complaining.
+     *
+     * Note that the previous section implies that this may return an empty
+     * `Config` object if no valid nameserver entries can be found.
+     *
+     * @return self
+     * @codeCoverageIgnore
+     */
+    public static function loadSystemConfigBlocking()
+    {
+        // Use WMIC output on Windows
+        if (DIRECTORY_SEPARATOR === '\\') {
+            return self::loadWmicBlocking();
+        }
+
+        // otherwise (try to) load from resolv.conf
+        try {
+            return self::loadResolvConfBlocking();
+        } catch (RuntimeException $ignored) {
+            // return empty config if parsing fails (file not found)
+            return new self();
+        }
+    }
+
+    /**
+     * Loads a resolv.conf file (from the given path or default location)
+     *
+     * Note that this method blocks while loading the given path and should
+     * thus be used with care! While this should be relatively fast for normal
+     * resolv.conf files, this may be an issue if this file is located on a slow
+     * device or contains an excessive number of entries. In particular, this
+     * method should only be executed before the loop starts, not while it is
+     * running.
+     *
+     * Note that this method will throw if the given file can not be loaded,
+     * such as if it is not readable or does not exist. In particular, this file
+     * is not available on Windows.
+     *
+     * Currently, this will only parse valid "nameserver X" lines from the
+     * given file contents. Lines can be commented out with "#" and ";" and
+     * invalid lines will be ignored without complaining. See also
+     * `man resolv.conf` for more details.
+     *
+     * Note that the previous section implies that this may return an empty
+     * `Config` object if no valid "nameserver X" lines can be found. See also
+     * `man resolv.conf` which suggests that the DNS server on the localhost
+     * should be used in this case. This is left up to higher level consumers
+     * of this API.
+     *
+     * @param ?string $path (optional) path to resolv.conf file or null=load default location
+     * @return self
+     * @throws RuntimeException if the path can not be loaded (does not exist)
+     */
+    public static function loadResolvConfBlocking($path = null)
+    {
+        if ($path === null) {
+            $path = '/etc/resolv.conf';
+        }
+
+        $contents = @file_get_contents($path);
+        if ($contents === false) {
+            throw new RuntimeException('Unable to load resolv.conf file "' . $path . '"');
+        }
+
+        preg_match_all('/^nameserver\s+(\S+)\s*$/m', $contents, $matches);
+
+        $config = new self();
+        $config->nameservers = $matches[1];
+
+        return $config;
+    }
+
+    /**
+     * Loads the DNS configurations from Windows's WMIC (from the given command or default command)
+     *
+     * Note that this method blocks while loading the given command and should
+     * thus be used with care! While this should be relatively fast for normal
+     * WMIC commands, it remains unknown if this may block under certain
+     * circumstances. In particular, this method should only be executed before
+     * the loop starts, not while it is running.
+     *
+     * Note that this method will only try to execute the given command try to
+     * parse its output, irrespective of whether this command exists. In
+     * particular, this command is only available on Windows. Currently, this
+     * will only parse valid nameserver entries from the command output and will
+     * ignore all other output without complaining.
+     *
+     * Note that the previous section implies that this may return an empty
+     * `Config` object if no valid nameserver entries can be found.
+     *
+     * @param ?string $command (advanced) should not be given (NULL) unless you know what you're doing
+     * @return self
+     * @link https://ss64.com/nt/wmic.html
+     */
+    public static function loadWmicBlocking($command = null)
+    {
+        $contents = shell_exec($command === null ? 'wmic NICCONFIG get "DNSServerSearchOrder" /format:CSV' : $command);
+        preg_match_all('/(?<=[{;,"])([\da-f.:]{4,})(?=[};,"])/i', $contents, $matches);
+
+        $config = new self();
+        $config->nameservers = $matches[1];
+
+        return $config;
+    }
+
+    public $nameservers = array();
+}
diff --git a/assets/php/vendor/react/dns/src/Config/FilesystemFactory.php b/assets/php/vendor/react/dns/src/Config/FilesystemFactory.php
new file mode 100644
index 0000000..68cec3e
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Config/FilesystemFactory.php
@@ -0,0 +1,73 @@
+<?php
+
+namespace React\Dns\Config;
+
+use React\EventLoop\LoopInterface;
+use React\Promise;
+use React\Promise\Deferred;
+use React\Stream\ReadableResourceStream;
+use React\Stream\Stream;
+
+/**
+ * @deprecated
+ * @see Config see Config class instead.
+ */
+class FilesystemFactory
+{
+    private $loop;
+
+    public function __construct(LoopInterface $loop)
+    {
+        $this->loop = $loop;
+    }
+
+    public function create($filename)
+    {
+        return $this
+            ->loadEtcResolvConf($filename)
+            ->then(array($this, 'parseEtcResolvConf'));
+    }
+
+    /**
+     * @param string $contents
+     * @return Promise
+     * @deprecated see Config instead
+     */
+    public function parseEtcResolvConf($contents)
+    {
+        return Promise\resolve(Config::loadResolvConfBlocking(
+            'data://text/plain;base64,' . base64_encode($contents)
+        ));
+    }
+
+    public function loadEtcResolvConf($filename)
+    {
+        if (!file_exists($filename)) {
+            return Promise\reject(new \InvalidArgumentException("The filename for /etc/resolv.conf given does not exist: $filename"));
+        }
+
+        try {
+            $deferred = new Deferred();
+
+            $fd = fopen($filename, 'r');
+            stream_set_blocking($fd, 0);
+
+            $contents = '';
+
+            $stream = class_exists('React\Stream\ReadableResourceStream') ? new ReadableResourceStream($fd, $this->loop) : new Stream($fd, $this->loop);
+            $stream->on('data', function ($data) use (&$contents) {
+                $contents .= $data;
+            });
+            $stream->on('end', function () use (&$contents, $deferred) {
+                $deferred->resolve($contents);
+            });
+            $stream->on('error', function ($error) use ($deferred) {
+                $deferred->reject($error);
+            });
+
+            return $deferred->promise();
+        } catch (\Exception $e) {
+            return Promise\reject($e);
+        }
+    }
+}
diff --git a/assets/php/vendor/react/dns/src/Config/HostsFile.php b/assets/php/vendor/react/dns/src/Config/HostsFile.php
new file mode 100644
index 0000000..5b6277e
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Config/HostsFile.php
@@ -0,0 +1,151 @@
+<?php
+
+namespace React\Dns\Config;
+
+use RuntimeException;
+
+/**
+ * Represents a static hosts file which maps hostnames to IPs
+ *
+ * Hosts files are used on most systems to avoid actually hitting the DNS for
+ * certain common hostnames.
+ *
+ * Most notably, this file usually contains an entry to map "localhost" to the
+ * local IP. Windows is a notable exception here, as Windows does not actually
+ * include "localhost" in this file by default. To compensate for this, this
+ * class may explicitly be wrapped in another HostsFile instance which
+ * hard-codes these entries for Windows (see also Factory).
+ *
+ * This class mostly exists to abstract the parsing/extraction process so this
+ * can be replaced with a faster alternative in the future.
+ */
+class HostsFile
+{
+    /**
+     * Returns the default path for the hosts file on this system
+     *
+     * @return string
+     * @codeCoverageIgnore
+     */
+    public static function getDefaultPath()
+    {
+        // use static path for all Unix-based systems
+        if (DIRECTORY_SEPARATOR !== '\\') {
+            return '/etc/hosts';
+        }
+
+        // Windows actually stores the path in the registry under
+        // \HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\DataBasePath
+        $path = '%SystemRoot%\\system32\drivers\etc\hosts';
+
+        $base = getenv('SystemRoot');
+        if ($base === false) {
+            $base = 'C:\\Windows';
+        }
+
+        return str_replace('%SystemRoot%', $base, $path);
+    }
+
+    /**
+     * Loads a hosts file (from the given path or default location)
+     *
+     * Note that this method blocks while loading the given path and should
+     * thus be used with care! While this should be relatively fast for normal
+     * hosts file, this may be an issue if this file is located on a slow device
+     * or contains an excessive number of entries. In particular, this method
+     * should only be executed before the loop starts, not while it is running.
+     *
+     * @param ?string $path (optional) path to hosts file or null=load default location
+     * @return self
+     * @throws RuntimeException if the path can not be loaded (does not exist)
+     */
+    public static function loadFromPathBlocking($path = null)
+    {
+        if ($path === null) {
+            $path = self::getDefaultPath();
+        }
+
+        $contents = @file_get_contents($path);
+        if ($contents === false) {
+            throw new RuntimeException('Unable to load hosts file "' . $path . '"');
+        }
+
+        return new self($contents);
+    }
+
+    /**
+     * Instantiate new hosts file with the given hosts file contents
+     *
+     * @param string $contents
+     */
+    public function __construct($contents)
+    {
+        // remove all comments from the contents
+        $contents = preg_replace('/[ \t]*#.*/', '', strtolower($contents));
+
+        $this->contents = $contents;
+    }
+
+    /**
+     * Returns all IPs for the given hostname
+     *
+     * @param string $name
+     * @return string[]
+     */
+    public function getIpsForHost($name)
+    {
+        $name = strtolower($name);
+
+        $ips = array();
+        foreach (preg_split('/\r?\n/', $this->contents) as $line) {
+            $parts = preg_split('/\s+/', $line);
+            $ip = array_shift($parts);
+            if ($parts && array_search($name, $parts) !== false) {
+                // remove IPv6 zone ID (`fe80::1%lo0` => `fe80:1`)
+                if (strpos($ip, ':') !== false && ($pos = strpos($ip, '%')) !== false) {
+                    $ip = substr($ip, 0, $pos);
+                }
+
+                if (@inet_pton($ip) !== false) {
+                    $ips[] = $ip;
+                }
+            }
+        }
+
+        return $ips;
+    }
+
+    /**
+     * Returns all hostnames for the given IPv4 or IPv6 address
+     *
+     * @param string $ip
+     * @return string[]
+     */
+    public function getHostsForIp($ip)
+    {
+        // check binary representation of IP to avoid string case and short notation
+        $ip = @inet_pton($ip);
+        if ($ip === false) {
+            return array();
+        }
+
+        $names = array();
+        foreach (preg_split('/\r?\n/', $this->contents) as $line) {
+            $parts = preg_split('/\s+/', $line, null, PREG_SPLIT_NO_EMPTY);
+            $addr = array_shift($parts);
+
+            // remove IPv6 zone ID (`fe80::1%lo0` => `fe80:1`)
+            if (strpos($addr, ':') !== false && ($pos = strpos($addr, '%')) !== false) {
+                $addr = substr($addr, 0, $pos);
+            }
+
+            if (@inet_pton($addr) === $ip) {
+                foreach ($parts as $part) {
+                    $names[] = $part;
+                }
+            }
+        }
+
+        return $names;
+    }
+}
diff --git a/assets/php/vendor/react/dns/src/Model/HeaderBag.php b/assets/php/vendor/react/dns/src/Model/HeaderBag.php
new file mode 100644
index 0000000..193e65c
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Model/HeaderBag.php
@@ -0,0 +1,56 @@
+<?php
+
+namespace React\Dns\Model;
+
+class HeaderBag
+{
+    public $data = '';
+
+    public $attributes = array(
+        'qdCount'   => 0,
+        'anCount'   => 0,
+        'nsCount'   => 0,
+        'arCount'   => 0,
+        'qr'        => 0,
+        'opcode'    => Message::OPCODE_QUERY,
+        'aa'        => 0,
+        'tc'        => 0,
+        'rd'        => 0,
+        'ra'        => 0,
+        'z'         => 0,
+        'rcode'     => Message::RCODE_OK,
+    );
+
+    public function get($name)
+    {
+        return isset($this->attributes[$name]) ? $this->attributes[$name] : null;
+    }
+
+    public function set($name, $value)
+    {
+        $this->attributes[$name] = $value;
+    }
+
+    public function isQuery()
+    {
+        return 0 === $this->attributes['qr'];
+    }
+
+    public function isResponse()
+    {
+        return 1 === $this->attributes['qr'];
+    }
+
+    public function isTruncated()
+    {
+        return 1 === $this->attributes['tc'];
+    }
+
+    public function populateCounts(Message $message)
+    {
+        $this->attributes['qdCount'] = count($message->questions);
+        $this->attributes['anCount'] = count($message->answers);
+        $this->attributes['nsCount'] = count($message->authority);
+        $this->attributes['arCount'] = count($message->additional);
+    }
+}
diff --git a/assets/php/vendor/react/dns/src/Model/Message.php b/assets/php/vendor/react/dns/src/Model/Message.php
new file mode 100644
index 0000000..715cb1f
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Model/Message.php
@@ -0,0 +1,100 @@
+<?php
+
+namespace React\Dns\Model;
+
+use React\Dns\Query\Query;
+use React\Dns\Model\Record;
+
+class Message
+{
+    const TYPE_A = 1;
+    const TYPE_NS = 2;
+    const TYPE_CNAME = 5;
+    const TYPE_SOA = 6;
+    const TYPE_PTR = 12;
+    const TYPE_MX = 15;
+    const TYPE_TXT = 16;
+    const TYPE_AAAA = 28;
+
+    const CLASS_IN = 1;
+
+    const OPCODE_QUERY = 0;
+    const OPCODE_IQUERY = 1; // inverse query
+    const OPCODE_STATUS = 2;
+
+    const RCODE_OK = 0;
+    const RCODE_FORMAT_ERROR = 1;
+    const RCODE_SERVER_FAILURE = 2;
+    const RCODE_NAME_ERROR = 3;
+    const RCODE_NOT_IMPLEMENTED = 4;
+    const RCODE_REFUSED = 5;
+
+    /**
+     * Creates a new request message for the given query
+     *
+     * @param Query $query
+     * @return self
+     */
+    public static function createRequestForQuery(Query $query)
+    {
+        $request = new Message();
+        $request->header->set('id', self::generateId());
+        $request->header->set('rd', 1);
+        $request->questions[] = (array) $query;
+        $request->prepare();
+
+        return $request;
+    }
+
+    /**
+     * Creates a new response message for the given query with the given answer records
+     *
+     * @param Query    $query
+     * @param Record[] $answers
+     * @return self
+     */
+    public static function createResponseWithAnswersForQuery(Query $query, array $answers)
+    {
+        $response = new Message();
+        $response->header->set('id', self::generateId());
+        $response->header->set('qr', 1);
+        $response->header->set('opcode', Message::OPCODE_QUERY);
+        $response->header->set('rd', 1);
+        $response->header->set('rcode', Message::RCODE_OK);
+
+        $response->questions[] = (array) $query;
+
+        foreach ($answers as $record) {
+            $response->answers[] = $record;
+        }
+
+        $response->prepare();
+
+        return $response;
+    }
+
+    private static function generateId()
+    {
+        return mt_rand(0, 0xffff);
+    }
+
+    public $data = '';
+
+    public $header;
+    public $questions = array();
+    public $answers = array();
+    public $authority = array();
+    public $additional = array();
+
+    public $consumed = 0;
+
+    public function __construct()
+    {
+        $this->header = new HeaderBag();
+    }
+
+    public function prepare()
+    {
+        $this->header->populateCounts($this);
+    }
+}
diff --git a/assets/php/vendor/react/dns/src/Model/Record.php b/assets/php/vendor/react/dns/src/Model/Record.php
new file mode 100644
index 0000000..029d232
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Model/Record.php
@@ -0,0 +1,21 @@
+<?php
+
+namespace React\Dns\Model;
+
+class Record
+{
+    public $name;
+    public $type;
+    public $class;
+    public $ttl;
+    public $data;
+
+    public function __construct($name, $type, $class, $ttl = 0, $data = null)
+    {
+        $this->name     = $name;
+        $this->type     = $type;
+        $this->class    = $class;
+        $this->ttl      = $ttl;
+        $this->data     = $data;
+    }
+}
diff --git a/assets/php/vendor/react/dns/src/Protocol/BinaryDumper.php b/assets/php/vendor/react/dns/src/Protocol/BinaryDumper.php
new file mode 100644
index 0000000..35d6ae6
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Protocol/BinaryDumper.php
@@ -0,0 +1,62 @@
+<?php
+
+namespace React\Dns\Protocol;
+
+use React\Dns\Model\Message;
+use React\Dns\Model\HeaderBag;
+
+class BinaryDumper
+{
+    public function toBinary(Message $message)
+    {
+        $data = '';
+
+        $data .= $this->headerToBinary($message->header);
+        $data .= $this->questionToBinary($message->questions);
+
+        return $data;
+    }
+
+    private function headerToBinary(HeaderBag $header)
+    {
+        $data = '';
+
+        $data .= pack('n', $header->get('id'));
+
+        $flags = 0x00;
+        $flags = ($flags << 1) | $header->get('qr');
+        $flags = ($flags << 4) | $header->get('opcode');
+        $flags = ($flags << 1) | $header->get('aa');
+        $flags = ($flags << 1) | $header->get('tc');
+        $flags = ($flags << 1) | $header->get('rd');
+        $flags = ($flags << 1) | $header->get('ra');
+        $flags = ($flags << 3) | $header->get('z');
+        $flags = ($flags << 4) | $header->get('rcode');
+
+        $data .= pack('n', $flags);
+
+        $data .= pack('n', $header->get('qdCount'));
+        $data .= pack('n', $header->get('anCount'));
+        $data .= pack('n', $header->get('nsCount'));
+        $data .= pack('n', $header->get('arCount'));
+
+        return $data;
+    }
+
+    private function questionToBinary(array $questions)
+    {
+        $data = '';
+
+        foreach ($questions as $question) {
+            $labels = explode('.', $question['name']);
+            foreach ($labels as $label) {
+                $data .= chr(strlen($label)).$label;
+            }
+            $data .= "\x00";
+
+            $data .= pack('n*', $question['type'], $question['class']);
+        }
+
+        return $data;
+    }
+}
diff --git a/assets/php/vendor/react/dns/src/Protocol/Parser.php b/assets/php/vendor/react/dns/src/Protocol/Parser.php
new file mode 100644
index 0000000..1191cd3
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Protocol/Parser.php
@@ -0,0 +1,254 @@
+<?php
+
+namespace React\Dns\Protocol;
+
+use React\Dns\Model\Message;
+use React\Dns\Model\Record;
+use InvalidArgumentException;
+
+/**
+ * DNS protocol parser
+ *
+ * Obsolete and uncommon types and classes are not implemented.
+ */
+class Parser
+{
+    /**
+     * Parses the given raw binary message into a Message object
+     *
+     * @param string $data
+     * @throws InvalidArgumentException
+     * @return Message
+     */
+    public function parseMessage($data)
+    {
+        $message = new Message();
+        if ($this->parse($data, $message) !== $message) {
+            throw new InvalidArgumentException('Unable to parse binary message');
+        }
+
+        return $message;
+    }
+
+    /**
+     * @deprecated unused, exists for BC only
+     */
+    public function parseChunk($data, Message $message)
+    {
+        return $this->parse($data, $message);
+    }
+
+    private function parse($data, Message $message)
+    {
+        $message->data .= $data;
+
+        if (!$message->header->get('id')) {
+            if (!$this->parseHeader($message)) {
+                return;
+            }
+        }
+
+        if ($message->header->get('qdCount') != count($message->questions)) {
+            if (!$this->parseQuestion($message)) {
+                return;
+            }
+        }
+
+        if ($message->header->get('anCount') != count($message->answers)) {
+            if (!$this->parseAnswer($message)) {
+                return;
+            }
+        }
+
+        return $message;
+    }
+
+    public function parseHeader(Message $message)
+    {
+        if (strlen($message->data) < 12) {
+            return;
+        }
+
+        $header = substr($message->data, 0, 12);
+        $message->consumed += 12;
+
+        list($id, $fields, $qdCount, $anCount, $nsCount, $arCount) = array_values(unpack('n*', $header));
+
+        $rcode = $fields & bindec('1111');
+        $z = ($fields >> 4) & bindec('111');
+        $ra = ($fields >> 7) & 1;
+        $rd = ($fields >> 8) & 1;
+        $tc = ($fields >> 9) & 1;
+        $aa = ($fields >> 10) & 1;
+        $opcode = ($fields >> 11) & bindec('1111');
+        $qr = ($fields >> 15) & 1;
+
+        $vars = compact('id', 'qdCount', 'anCount', 'nsCount', 'arCount',
+                            'qr', 'opcode', 'aa', 'tc', 'rd', 'ra', 'z', 'rcode');
+
+
+        foreach ($vars as $name => $value) {
+            $message->header->set($name, $value);
+        }
+
+        return $message;
+    }
+
+    public function parseQuestion(Message $message)
+    {
+        if (strlen($message->data) < 2) {
+            return;
+        }
+
+        $consumed = $message->consumed;
+
+        list($labels, $consumed) = $this->readLabels($message->data, $consumed);
+
+        if (null === $labels) {
+            return;
+        }
+
+        if (strlen($message->data) - $consumed < 4) {
+            return;
+        }
+
+        list($type, $class) = array_values(unpack('n*', substr($message->data, $consumed, 4)));
+        $consumed += 4;
+
+        $message->consumed = $consumed;
+
+        $message->questions[] = array(
+            'name' => implode('.', $labels),
+            'type' => $type,
+            'class' => $class,
+        );
+
+        if ($message->header->get('qdCount') != count($message->questions)) {
+            return $this->parseQuestion($message);
+        }
+
+        return $message;
+    }
+
+    public function parseAnswer(Message $message)
+    {
+        if (strlen($message->data) < 2) {
+            return;
+        }
+
+        $consumed = $message->consumed;
+
+        list($labels, $consumed) = $this->readLabels($message->data, $consumed);
+
+        if (null === $labels) {
+            return;
+        }
+
+        if (strlen($message->data) - $consumed < 10) {
+            return;
+        }
+
+        list($type, $class) = array_values(unpack('n*', substr($message->data, $consumed, 4)));
+        $consumed += 4;
+
+        list($ttl) = array_values(unpack('N', substr($message->data, $consumed, 4)));
+        $consumed += 4;
+
+        list($rdLength) = array_values(unpack('n', substr($message->data, $consumed, 2)));
+        $consumed += 2;
+
+        $rdata = null;
+
+        if (Message::TYPE_A === $type || Message::TYPE_AAAA === $type) {
+            $ip = substr($message->data, $consumed, $rdLength);
+            $consumed += $rdLength;
+
+            $rdata = inet_ntop($ip);
+        }
+
+        if (Message::TYPE_CNAME === $type || Message::TYPE_PTR === $type) {
+            list($bodyLabels, $consumed) = $this->readLabels($message->data, $consumed);
+
+            $rdata = implode('.', $bodyLabels);
+        }
+
+        $message->consumed = $consumed;
+
+        $name = implode('.', $labels);
+        $ttl = $this->signedLongToUnsignedLong($ttl);
+        $record = new Record($name, $type, $class, $ttl, $rdata);
+
+        $message->answers[] = $record;
+
+        if ($message->header->get('anCount') != count($message->answers)) {
+            return $this->parseAnswer($message);
+        }
+
+        return $message;
+    }
+
+    private function readLabels($data, $consumed)
+    {
+        $labels = array();
+
+        while (true) {
+            if ($this->isEndOfLabels($data, $consumed)) {
+                $consumed += 1;
+                break;
+            }
+
+            if ($this->isCompressedLabel($data, $consumed)) {
+                list($newLabels, $consumed) = $this->getCompressedLabel($data, $consumed);
+                $labels = array_merge($labels, $newLabels);
+                break;
+            }
+
+            $length = ord(substr($data, $consumed, 1));
+            $consumed += 1;
+
+            if (strlen($data) - $consumed < $length) {
+                return array(null, null);
+            }
+
+            $labels[] = substr($data, $consumed, $length);
+            $consumed += $length;
+        }
+
+        return array($labels, $consumed);
+    }
+
+    public function isEndOfLabels($data, $consumed)
+    {
+        $length = ord(substr($data, $consumed, 1));
+        return 0 === $length;
+    }
+
+    public function getCompressedLabel($data, $consumed)
+    {
+        list($nameOffset, $consumed) = $this->getCompressedLabelOffset($data, $consumed);
+        list($labels) = $this->readLabels($data, $nameOffset);
+
+        return array($labels, $consumed);
+    }
+
+    public function isCompressedLabel($data, $consumed)
+    {
+        $mask = 0xc000; // 1100000000000000
+        list($peek) = array_values(unpack('n', substr($data, $consumed, 2)));
+
+        return (bool) ($peek & $mask);
+    }
+
+    public function getCompressedLabelOffset($data, $consumed)
+    {
+        $mask = 0x3fff; // 0011111111111111
+        list($peek) = array_values(unpack('n', substr($data, $consumed, 2)));
+
+        return array($peek & $mask, $consumed + 2);
+    }
+
+    public function signedLongToUnsignedLong($i)
+    {
+        return $i & 0x80000000 ? $i - 0xffffffff : $i;
+    }
+}
diff --git a/assets/php/vendor/react/dns/src/Query/CachedExecutor.php b/assets/php/vendor/react/dns/src/Query/CachedExecutor.php
new file mode 100644
index 0000000..285936d
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Query/CachedExecutor.php
@@ -0,0 +1,55 @@
+<?php
+
+namespace React\Dns\Query;
+
+use React\Dns\Model\Message;
+
+class CachedExecutor implements ExecutorInterface
+{
+    private $executor;
+    private $cache;
+
+    public function __construct(ExecutorInterface $executor, RecordCache $cache)
+    {
+        $this->executor = $executor;
+        $this->cache = $cache;
+    }
+
+    public function query($nameserver, Query $query)
+    {
+        $executor = $this->executor;
+        $cache = $this->cache;
+
+        return $this->cache
+            ->lookup($query)
+            ->then(
+                function ($cachedRecords) use ($query) {
+                    return Message::createResponseWithAnswersForQuery($query, $cachedRecords);
+                },
+                function () use ($executor, $cache, $nameserver, $query) {
+                    return $executor
+                        ->query($nameserver, $query)
+                        ->then(function ($response) use ($cache, $query) {
+                            $cache->storeResponseMessage($query->currentTime, $response);
+                            return $response;
+                        });
+                }
+            );
+    }
+
+    /**
+     * @deprecated unused, exists for BC only
+     */
+    public function buildResponse(Query $query, array $cachedRecords)
+    {
+        return Message::createResponseWithAnswersForQuery($query, $cachedRecords);
+    }
+
+    /**
+     * @deprecated unused, exists for BC only
+     */
+    protected function generateId()
+    {
+        return mt_rand(0, 0xffff);
+    }
+}
diff --git a/assets/php/vendor/react/dns/src/Query/CancellationException.php b/assets/php/vendor/react/dns/src/Query/CancellationException.php
new file mode 100644
index 0000000..ac30f4c
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Query/CancellationException.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace React\Dns\Query;
+
+class CancellationException extends \RuntimeException
+{
+}
diff --git a/assets/php/vendor/react/dns/src/Query/Executor.php b/assets/php/vendor/react/dns/src/Query/Executor.php
new file mode 100644
index 0000000..4c51f2b
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Query/Executor.php
@@ -0,0 +1,156 @@
+<?php
+
+namespace React\Dns\Query;
+
+use React\Dns\Model\Message;
+use React\Dns\Protocol\Parser;
+use React\Dns\Protocol\BinaryDumper;
+use React\EventLoop\LoopInterface;
+use React\Promise\Deferred;
+use React\Promise;
+use React\Stream\DuplexResourceStream;
+use React\Stream\Stream;
+
+class Executor implements ExecutorInterface
+{
+    private $loop;
+    private $parser;
+    private $dumper;
+    private $timeout;
+
+    /**
+     *
+     * Note that albeit supported, the $timeout parameter is deprecated!
+     * You should pass a `null` value here instead. If you need timeout handling,
+     * use the `TimeoutConnector` instead.
+     *
+     * @param LoopInterface $loop
+     * @param Parser $parser
+     * @param BinaryDumper $dumper
+     * @param null|float $timeout DEPRECATED: timeout for DNS query or NULL=no timeout
+     */
+    public function __construct(LoopInterface $loop, Parser $parser, BinaryDumper $dumper, $timeout = 5)
+    {
+        $this->loop = $loop;
+        $this->parser = $parser;
+        $this->dumper = $dumper;
+        $this->timeout = $timeout;
+    }
+
+    public function query($nameserver, Query $query)
+    {
+        $request = Message::createRequestForQuery($query);
+
+        $queryData = $this->dumper->toBinary($request);
+        $transport = strlen($queryData) > 512 ? 'tcp' : 'udp';
+
+        return $this->doQuery($nameserver, $transport, $queryData, $query->name);
+    }
+
+    /**
+     * @deprecated unused, exists for BC only
+     */
+    public function prepareRequest(Query $query)
+    {
+        return Message::createRequestForQuery($query);
+    }
+
+    public function doQuery($nameserver, $transport, $queryData, $name)
+    {
+        // we only support UDP right now
+        if ($transport !== 'udp') {
+            return Promise\reject(new \RuntimeException(
+                'DNS query for ' . $name . ' failed: Requested transport "' . $transport . '" not available, only UDP is supported in this version'
+            ));
+        }
+
+        $that = $this;
+        $parser = $this->parser;
+        $loop = $this->loop;
+
+        // UDP connections are instant, so try this without a timer
+        try {
+            $conn = $this->createConnection($nameserver, $transport);
+        } catch (\Exception $e) {
+            return Promise\reject(new \RuntimeException('DNS query for ' . $name . ' failed: ' . $e->getMessage(), 0, $e));
+        }
+
+        $deferred = new Deferred(function ($resolve, $reject) use (&$timer, $loop, &$conn, $name) {
+            $reject(new CancellationException(sprintf('DNS query for %s has been cancelled', $name)));
+
+            if ($timer !== null) {
+                $loop->cancelTimer($timer);
+            }
+            $conn->close();
+        });
+
+        $timer = null;
+        if ($this->timeout !== null) {
+            $timer = $this->loop->addTimer($this->timeout, function () use (&$conn, $name, $deferred) {
+                $conn->close();
+                $deferred->reject(new TimeoutException(sprintf("DNS query for %s timed out", $name)));
+            });
+        }
+
+        $conn->on('data', function ($data) use ($conn, $parser, $deferred, $timer, $loop, $name) {
+            $conn->end();
+            if ($timer !== null) {
+                $loop->cancelTimer($timer);
+            }
+
+            try {
+                $response = $parser->parseMessage($data);
+            } catch (\Exception $e) {
+                $deferred->reject($e);
+                return;
+            }
+
+            if ($response->header->isTruncated()) {
+                $deferred->reject(new \RuntimeException('DNS query for ' . $name . ' failed: The server returned a truncated result for a UDP query, but retrying via TCP is currently not supported'));
+                return;
+            }
+
+            $deferred->resolve($response);
+        });
+        $conn->write($queryData);
+
+        return $deferred->promise();
+    }
+
+    /**
+     * @deprecated unused, exists for BC only
+     */
+    protected function generateId()
+    {
+        return mt_rand(0, 0xffff);
+    }
+
+    /**
+     * @param string $nameserver
+     * @param string $transport
+     * @return \React\Stream\DuplexStreamInterface
+     */
+    protected function createConnection($nameserver, $transport)
+    {
+        $fd = @stream_socket_client("$transport://$nameserver", $errno, $errstr, 0, STREAM_CLIENT_CONNECT | STREAM_CLIENT_ASYNC_CONNECT);
+        if ($fd === false) {
+            throw new \RuntimeException('Unable to connect to DNS server: ' . $errstr, $errno);
+        }
+
+        // Instantiate stream instance around this stream resource.
+        // This ought to be replaced with a datagram socket in the future.
+        // Temporary work around for Windows 10: buffer whole UDP response
+        // @coverageIgnoreStart
+        if (!class_exists('React\Stream\Stream')) {
+            // prefer DuplexResourceStream as of react/stream v0.7.0
+            $conn = new DuplexResourceStream($fd, $this->loop, -1);
+        } else {
+            // use legacy Stream class for react/stream < v0.7.0
+            $conn = new Stream($fd, $this->loop);
+            $conn->bufferSize = null;
+        }
+        // @coverageIgnoreEnd
+
+        return $conn;
+    }
+}
diff --git a/assets/php/vendor/react/dns/src/Query/ExecutorInterface.php b/assets/php/vendor/react/dns/src/Query/ExecutorInterface.php
new file mode 100644
index 0000000..2f7a635
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Query/ExecutorInterface.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace React\Dns\Query;
+
+interface ExecutorInterface
+{
+    public function query($nameserver, Query $query);
+}
diff --git a/assets/php/vendor/react/dns/src/Query/HostsFileExecutor.php b/assets/php/vendor/react/dns/src/Query/HostsFileExecutor.php
new file mode 100644
index 0000000..0ca58be
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Query/HostsFileExecutor.php
@@ -0,0 +1,89 @@
+<?php
+
+namespace React\Dns\Query;
+
+use React\Dns\Config\HostsFile;
+use React\Dns\Model\Message;
+use React\Dns\Model\Record;
+use React\Promise;
+
+/**
+ * Resolves hosts from the givne HostsFile or falls back to another executor
+ *
+ * If the host is found in the hosts file, it will not be passed to the actual
+ * DNS executor. If the host is not found in the hosts file, it will be passed
+ * to the DNS executor as a fallback.
+ */
+class HostsFileExecutor implements ExecutorInterface
+{
+    private $hosts;
+    private $fallback;
+
+    public function __construct(HostsFile $hosts, ExecutorInterface $fallback)
+    {
+        $this->hosts = $hosts;
+        $this->fallback = $fallback;
+    }
+
+    public function query($nameserver, Query $query)
+    {
+        if ($query->class === Message::CLASS_IN && ($query->type === Message::TYPE_A || $query->type === Message::TYPE_AAAA)) {
+            // forward lookup for type A or AAAA
+            $records = array();
+            $expectsColon = $query->type === Message::TYPE_AAAA;
+            foreach ($this->hosts->getIpsForHost($query->name) as $ip) {
+                // ensure this is an IPv4/IPV6 address according to query type
+                if ((strpos($ip, ':') !== false) === $expectsColon) {
+                    $records[] = new Record($query->name, $query->type, $query->class, 0, $ip);
+                }
+            }
+
+            if ($records) {
+                return Promise\resolve(
+                    Message::createResponseWithAnswersForQuery($query, $records)
+                );
+            }
+        } elseif ($query->class === Message::CLASS_IN && $query->type === Message::TYPE_PTR) {
+            // reverse lookup: extract IPv4 or IPv6 from special `.arpa` domain
+            $ip = $this->getIpFromHost($query->name);
+
+            if ($ip !== null) {
+                $records = array();
+                foreach ($this->hosts->getHostsForIp($ip) as $host) {
+                    $records[] = new Record($query->name, $query->type, $query->class, 0, $host);
+                }
+
+                if ($records) {
+                    return Promise\resolve(
+                        Message::createResponseWithAnswersForQuery($query, $records)
+                    );
+                }
+            }
+        }
+
+        return $this->fallback->query($nameserver, $query);
+    }
+
+    private function getIpFromHost($host)
+    {
+        if (substr($host, -13) === '.in-addr.arpa') {
+            // IPv4: read as IP and reverse bytes
+            $ip = @inet_pton(substr($host, 0, -13));
+            if ($ip === false || isset($ip[4])) {
+                return null;
+            }
+
+            return inet_ntop(strrev($ip));
+        } elseif (substr($host, -9) === '.ip6.arpa') {
+            // IPv6: replace dots, reverse nibbles and interpret as hexadecimal string
+            $ip = @inet_ntop(pack('H*', strrev(str_replace('.', '', substr($host, 0, -9)))));
+            if ($ip === false) {
+                return null;
+            }
+
+            return $ip;
+        } else {
+            return null;
+        }
+    }
+}
diff --git a/assets/php/vendor/react/dns/src/Query/Query.php b/assets/php/vendor/react/dns/src/Query/Query.php
new file mode 100644
index 0000000..aef6e05
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Query/Query.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace React\Dns\Query;
+
+class Query
+{
+    public $name;
+    public $type;
+    public $class;
+    public $currentTime;
+
+    public function __construct($name, $type, $class, $currentTime)
+    {
+        $this->name = $name;
+        $this->type = $type;
+        $this->class = $class;
+        $this->currentTime = $currentTime;
+    }
+}
diff --git a/assets/php/vendor/react/dns/src/Query/RecordBag.php b/assets/php/vendor/react/dns/src/Query/RecordBag.php
new file mode 100644
index 0000000..358cf5d
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Query/RecordBag.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace React\Dns\Query;
+
+use React\Dns\Model\Message;
+use React\Dns\Model\Record;
+
+class RecordBag
+{
+    private $records = array();
+
+    public function set($currentTime, Record $record)
+    {
+        $this->records[$record->data] = array($currentTime + $record->ttl, $record);
+    }
+
+    public function all()
+    {
+        return array_values(array_map(
+            function ($value) {
+                list($expiresAt, $record) = $value;
+                return $record;
+            },
+            $this->records
+        ));
+    }
+}
diff --git a/assets/php/vendor/react/dns/src/Query/RecordCache.php b/assets/php/vendor/react/dns/src/Query/RecordCache.php
new file mode 100644
index 0000000..b8142d3
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Query/RecordCache.php
@@ -0,0 +1,82 @@
+<?php
+
+namespace React\Dns\Query;
+
+use React\Cache\CacheInterface;
+use React\Dns\Model\Message;
+use React\Dns\Model\Record;
+use React\Promise;
+
+class RecordCache
+{
+    private $cache;
+    private $expiredAt;
+
+    public function __construct(CacheInterface $cache)
+    {
+        $this->cache = $cache;
+    }
+
+    public function lookup(Query $query)
+    {
+        $id = $this->serializeQueryToIdentity($query);
+
+        $expiredAt = $this->expiredAt;
+
+        return $this->cache
+            ->get($id)
+            ->then(function ($value) use ($query, $expiredAt) {
+                $recordBag = unserialize($value);
+
+                if (null !== $expiredAt && $expiredAt <= $query->currentTime) {
+                    return Promise\reject();
+                }
+
+                return $recordBag->all();
+            });
+    }
+
+    public function storeResponseMessage($currentTime, Message $message)
+    {
+        foreach ($message->answers as $record) {
+            $this->storeRecord($currentTime, $record);
+        }
+    }
+
+    public function storeRecord($currentTime, Record $record)
+    {
+        $id = $this->serializeRecordToIdentity($record);
+
+        $cache = $this->cache;
+
+        $this->cache
+            ->get($id)
+            ->then(
+                function ($value) {
+                    return unserialize($value);
+                },
+                function ($e) {
+                    return new RecordBag();
+                }
+            )
+            ->then(function ($recordBag) use ($id, $currentTime, $record, $cache) {
+                $recordBag->set($currentTime, $record);
+                $cache->set($id, serialize($recordBag));
+            });
+    }
+
+    public function expire($currentTime)
+    {
+        $this->expiredAt = $currentTime;
+    }
+
+    public function serializeQueryToIdentity(Query $query)
+    {
+        return sprintf('%s:%s:%s', $query->name, $query->type, $query->class);
+    }
+
+    public function serializeRecordToIdentity(Record $record)
+    {
+        return sprintf('%s:%s:%s', $record->name, $record->type, $record->class);
+    }
+}
diff --git a/assets/php/vendor/react/dns/src/Query/RetryExecutor.php b/assets/php/vendor/react/dns/src/Query/RetryExecutor.php
new file mode 100644
index 0000000..90353e5
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Query/RetryExecutor.php
@@ -0,0 +1,44 @@
+<?php
+
+namespace React\Dns\Query;
+
+use React\Promise\Deferred;
+
+class RetryExecutor implements ExecutorInterface
+{
+    private $executor;
+    private $retries;
+
+    public function __construct(ExecutorInterface $executor, $retries = 2)
+    {
+        $this->executor = $executor;
+        $this->retries = $retries;
+    }
+
+    public function query($nameserver, Query $query)
+    {
+        return $this->tryQuery($nameserver, $query, $this->retries);
+    }
+
+    public function tryQuery($nameserver, Query $query, $retries)
+    {
+        $that = $this;
+        $errorback = function ($error) use ($nameserver, $query, $retries, $that) {
+            if (!$error instanceof TimeoutException) {
+                throw $error;
+            }
+            if (0 >= $retries) {
+                throw new \RuntimeException(
+                    sprintf("DNS query for %s failed: too many retries", $query->name),
+                    0,
+                    $error
+                );
+            }
+            return $that->tryQuery($nameserver, $query, $retries-1);
+        };
+
+        return $this->executor
+            ->query($nameserver, $query)
+            ->then(null, $errorback);
+    }
+}
diff --git a/assets/php/vendor/react/dns/src/Query/TimeoutException.php b/assets/php/vendor/react/dns/src/Query/TimeoutException.php
new file mode 100644
index 0000000..90bf806
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Query/TimeoutException.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace React\Dns\Query;
+
+class TimeoutException extends \Exception
+{
+}
diff --git a/assets/php/vendor/react/dns/src/Query/TimeoutExecutor.php b/assets/php/vendor/react/dns/src/Query/TimeoutExecutor.php
new file mode 100644
index 0000000..6a44888
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Query/TimeoutExecutor.php
@@ -0,0 +1,32 @@
+<?php
+
+namespace React\Dns\Query;
+
+use React\EventLoop\LoopInterface;
+use React\Promise\Deferred;
+use React\Promise\CancellablePromiseInterface;
+use React\Promise\Timer;
+
+class TimeoutExecutor implements ExecutorInterface
+{
+    private $executor;
+    private $loop;
+    private $timeout;
+
+    public function __construct(ExecutorInterface $executor, $timeout, LoopInterface $loop)
+    {
+        $this->executor = $executor;
+        $this->loop = $loop;
+        $this->timeout = $timeout;
+    }
+
+    public function query($nameserver, Query $query)
+    {
+        return Timer\timeout($this->executor->query($nameserver, $query), $this->timeout, $this->loop)->then(null, function ($e) use ($query) {
+            if ($e instanceof Timer\TimeoutException) {
+                $e = new TimeoutException(sprintf("DNS query for %s timed out", $query->name), 0, $e);
+            }
+            throw $e;
+        });
+    }
+}
diff --git a/assets/php/vendor/react/dns/src/RecordNotFoundException.php b/assets/php/vendor/react/dns/src/RecordNotFoundException.php
new file mode 100644
index 0000000..0028413
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/RecordNotFoundException.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace React\Dns;
+
+class RecordNotFoundException extends \Exception
+{
+}
diff --git a/assets/php/vendor/react/dns/src/Resolver/Factory.php b/assets/php/vendor/react/dns/src/Resolver/Factory.php
new file mode 100644
index 0000000..12a912f
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Resolver/Factory.php
@@ -0,0 +1,103 @@
+<?php
+
+namespace React\Dns\Resolver;
+
+use React\Cache\ArrayCache;
+use React\Cache\CacheInterface;
+use React\Dns\Config\HostsFile;
+use React\Dns\Protocol\Parser;
+use React\Dns\Protocol\BinaryDumper;
+use React\Dns\Query\CachedExecutor;
+use React\Dns\Query\Executor;
+use React\Dns\Query\ExecutorInterface;
+use React\Dns\Query\HostsFileExecutor;
+use React\Dns\Query\RecordCache;
+use React\Dns\Query\RetryExecutor;
+use React\Dns\Query\TimeoutExecutor;
+use React\EventLoop\LoopInterface;
+
+class Factory
+{
+    public function create($nameserver, LoopInterface $loop)
+    {
+        $nameserver = $this->addPortToServerIfMissing($nameserver);
+        $executor = $this->decorateHostsFileExecutor($this->createRetryExecutor($loop));
+
+        return new Resolver($nameserver, $executor);
+    }
+
+    public function createCached($nameserver, LoopInterface $loop, CacheInterface $cache = null)
+    {
+        if (!($cache instanceof CacheInterface)) {
+            $cache = new ArrayCache();
+        }
+
+        $nameserver = $this->addPortToServerIfMissing($nameserver);
+        $executor = $this->decorateHostsFileExecutor($this->createCachedExecutor($loop, $cache));
+
+        return new Resolver($nameserver, $executor);
+    }
+
+    /**
+     * Tries to load the hosts file and decorates the given executor on success
+     *
+     * @param ExecutorInterface $executor
+     * @return ExecutorInterface
+     * @codeCoverageIgnore
+     */
+    private function decorateHostsFileExecutor(ExecutorInterface $executor)
+    {
+        try {
+            $executor = new HostsFileExecutor(
+                HostsFile::loadFromPathBlocking(),
+                $executor
+            );
+        } catch (\RuntimeException $e) {
+            // ignore this file if it can not be loaded
+        }
+
+        // Windows does not store localhost in hosts file by default but handles this internally
+        // To compensate for this, we explicitly use hard-coded defaults for localhost
+        if (DIRECTORY_SEPARATOR === '\\') {
+            $executor = new HostsFileExecutor(
+                new HostsFile("127.0.0.1 localhost\n::1 localhost"),
+                $executor
+            );
+        }
+
+        return $executor;
+    }
+
+    protected function createExecutor(LoopInterface $loop)
+    {
+        return new TimeoutExecutor(
+            new Executor($loop, new Parser(), new BinaryDumper(), null),
+            5.0,
+            $loop
+        );
+    }
+
+    protected function createRetryExecutor(LoopInterface $loop)
+    {
+        return new RetryExecutor($this->createExecutor($loop));
+    }
+
+    protected function createCachedExecutor(LoopInterface $loop, CacheInterface $cache)
+    {
+        return new CachedExecutor($this->createRetryExecutor($loop), new RecordCache($cache));
+    }
+
+    protected function addPortToServerIfMissing($nameserver)
+    {
+        if (strpos($nameserver, '[') === false && substr_count($nameserver, ':') >= 2) {
+            // several colons, but not enclosed in square brackets => enclose IPv6 address in square brackets
+            $nameserver = '[' . $nameserver . ']';
+        }
+        // assume a dummy scheme when checking for the port, otherwise parse_url() fails
+        if (parse_url('dummy://' . $nameserver, PHP_URL_PORT) === null) {
+            $nameserver .= ':53';
+        }
+
+        return $nameserver;
+    }
+}
diff --git a/assets/php/vendor/react/dns/src/Resolver/Resolver.php b/assets/php/vendor/react/dns/src/Resolver/Resolver.php
new file mode 100644
index 0000000..4a4983a
--- /dev/null
+++ b/assets/php/vendor/react/dns/src/Resolver/Resolver.php
@@ -0,0 +1,100 @@
+<?php
+
+namespace React\Dns\Resolver;
+
+use React\Dns\Query\ExecutorInterface;
+use React\Dns\Query\Query;
+use React\Dns\RecordNotFoundException;
+use React\Dns\Model\Message;
+
+class Resolver
+{
+    private $nameserver;
+    private $executor;
+
+    public function __construct($nameserver, ExecutorInterface $executor)
+    {
+        $this->nameserver = $nameserver;
+        $this->executor = $executor;
+    }
+
+    public function resolve($domain)
+    {
+        $query = new Query($domain, Message::TYPE_A, Message::CLASS_IN, time());
+        $that = $this;
+
+        return $this->executor
+            ->query($this->nameserver, $query)
+            ->then(function (Message $response) use ($query, $that) {
+                return $that->extractAddress($query, $response);
+            });
+    }
+
+    public function extractAddress(Query $query, Message $response)
+    {
+        $answers = $response->answers;
+
+        $addresses = $this->resolveAliases($answers, $query->name);
+
+        if (0 === count($addresses)) {
+            $message = 'DNS Request did not return valid answer.';
+            throw new RecordNotFoundException($message);
+        }
+
+        $address = $addresses[array_rand($addresses)];
+        return $address;
+    }
+
+    public function resolveAliases(array $answers, $name)
+    {
+        $named = $this->filterByName($answers, $name);
+        $aRecords = $this->filterByType($named, Message::TYPE_A);
+        $cnameRecords = $this->filterByType($named, Message::TYPE_CNAME);
+
+        if ($aRecords) {
+            return $this->mapRecordData($aRecords);
+        }
+
+        if ($cnameRecords) {
+            $aRecords = array();
+
+            $cnames = $this->mapRecordData($cnameRecords);
+            foreach ($cnames as $cname) {
+                $targets = $this->filterByName($answers, $cname);
+                $aRecords = array_merge(
+                    $aRecords,
+                    $this->resolveAliases($answers, $cname)
+                );
+            }
+
+            return $aRecords;
+        }
+
+        return array();
+    }
+
+    private function filterByName(array $answers, $name)
+    {
+        return $this->filterByField($answers, 'name', $name);
+    }
+
+    private function filterByType(array $answers, $type)
+    {
+        return $this->filterByField($answers, 'type', $type);
+    }
+
+    private function filterByField(array $answers, $field, $value)
+    {
+        $value = strtolower($value);
+        return array_filter($answers, function ($answer) use ($field, $value) {
+            return $value === strtolower($answer->$field);
+        });
+    }
+
+    private function mapRecordData(array $records)
+    {
+        return array_map(function ($record) {
+            return $record->data;
+        }, $records);
+    }
+}
diff --git a/assets/php/vendor/react/dns/tests/CallableStub.php b/assets/php/vendor/react/dns/tests/CallableStub.php
new file mode 100644
index 0000000..a34a263
--- /dev/null
+++ b/assets/php/vendor/react/dns/tests/CallableStub.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace React\Tests\Dns;
+
+class CallableStub
+{
+    public function __invoke()
+    {
+    }
+}
diff --git a/assets/php/vendor/react/dns/tests/Config/ConfigTest.php b/assets/php/vendor/react/dns/tests/Config/ConfigTest.php
new file mode 100644
index 0000000..8020408
--- /dev/null
+++ b/assets/php/vendor/react/dns/tests/Config/ConfigTest.php
@@ -0,0 +1,189 @@
+<?php
+
+namespace React\Tests\Dns\Config;
+
+use React\Tests\Dns\TestCase;
+use React\Dns\Config\Config;
+
+class ConfigTest extends TestCase
+{
+    public function testLoadsSystemDefault()
+    {
+        $config = Config::loadSystemConfigBlocking();
+
+        $this->assertInstanceOf('React\Dns\Config\Config', $config);
+    }
+
+    public function testLoadsDefaultPath()
+    {
+        if (DIRECTORY_SEPARATOR === '\\') {
+            $this->markTestSkipped('Not supported on Windows');
+        }
+
+        $config = Config::loadResolvConfBlocking();
+
+        $this->assertInstanceOf('React\Dns\Config\Config', $config);
+    }
+
+    public function testLoadsFromExplicitPath()
+    {
+        $config = Config::loadResolvConfBlocking(__DIR__ . '/../Fixtures/etc/resolv.conf');
+
+        $this->assertEquals(array('8.8.8.8'), $config->nameservers);
+    }
+
+    /**
+     * @expectedException RuntimeException
+     */
+    public function testLoadThrowsWhenPathIsInvalid()
+    {
+        Config::loadResolvConfBlocking(__DIR__ . '/invalid.conf');
+    }
+
+    public function testParsesSingleEntryFile()
+    {
+        $contents = 'nameserver 8.8.8.8';
+        $expected = array('8.8.8.8');
+
+        $config = Config::loadResolvConfBlocking('data://text/plain;base64,' . base64_encode($contents));
+        $this->assertEquals($expected, $config->nameservers);
+    }
+
+    public function testParsesNameserverEntriesFromAverageFileCorrectly()
+    {
+        $contents = '#
+# Mac OS X Notice
+#
+# This file is not used by the host name and address resolution
+# or the DNS query routing mechanisms used by most processes on
+# this Mac OS X system.
+#
+# This file is automatically generated.
+#
+domain v.cablecom.net
+nameserver 127.0.0.1
+nameserver ::1
+';
+        $expected = array('127.0.0.1', '::1');
+
+        $config = Config::loadResolvConfBlocking('data://text/plain;base64,' . base64_encode($contents));
+        $this->assertEquals($expected, $config->nameservers);
+    }
+
+    public function testParsesEmptyFileWithoutNameserverEntries()
+    {
+        $contents = '';
+        $expected = array();
+
+        $config = Config::loadResolvConfBlocking('data://text/plain;base64,');
+        $this->assertEquals($expected, $config->nameservers);
+    }
+
+    public function testParsesFileAndIgnoresCommentsAndInvalidNameserverEntries()
+    {
+        $contents = '
+# nameserver 1.2.3.4
+; nameserver 2.3.4.5
+
+nameserver 3.4.5.6 # nope
+nameserver 4.5.6.7 5.6.7.8
+  nameserver 6.7.8.9
+NameServer 7.8.9.10
+';
+        $expected = array();
+
+        $config = Config::loadResolvConfBlocking('data://text/plain;base64,' . base64_encode($contents));
+        $this->assertEquals($expected, $config->nameservers);
+    }
+
+    public function testLoadsFromWmicOnWindows()
+    {
+        if (DIRECTORY_SEPARATOR !== '\\') {
+            $this->markTestSkipped('Only on Windows');
+        }
+
+        $config = Config::loadWmicBlocking();
+
+        $this->assertInstanceOf('React\Dns\Config\Config', $config);
+    }
+
+    public function testLoadsSingleEntryFromWmicOutput()
+    {
+        $contents = '
+Node,DNSServerSearchOrder
+ACE,
+ACE,{192.168.2.1}
+ACE,
+';
+        $expected = array('192.168.2.1');
+
+        $config = Config::loadWmicBlocking($this->echoCommand($contents));
+
+        $this->assertEquals($expected, $config->nameservers);
+    }
+
+    public function testLoadsEmptyListFromWmicOutput()
+    {
+        $contents = '
+Node,DNSServerSearchOrder
+ACE,
+';
+        $expected = array();
+
+        $config = Config::loadWmicBlocking($this->echoCommand($contents));
+
+        $this->assertEquals($expected, $config->nameservers);
+    }
+
+    public function testLoadsSingleEntryForMultipleNicsFromWmicOutput()
+    {
+        $contents = '
+Node,DNSServerSearchOrder
+ACE,
+ACE,{192.168.2.1}
+ACE,
+ACE,{192.168.2.2}
+ACE,
+';
+        $expected = array('192.168.2.1', '192.168.2.2');
+
+        $config = Config::loadWmicBlocking($this->echoCommand($contents));
+
+        $this->assertEquals($expected, $config->nameservers);
+    }
+
+    public function testLoadsMultipleEntriesForSingleNicWithSemicolonFromWmicOutput()
+    {
+        $contents = '
+Node,DNSServerSearchOrder
+ACE,
+ACE,{192.168.2.1;192.168.2.2}
+ACE,
+';
+        $expected = array('192.168.2.1', '192.168.2.2');
+
+        $config = Config::loadWmicBlocking($this->echoCommand($contents));
+
+        $this->assertEquals($expected, $config->nameservers);
+    }
+
+    public function testLoadsMultipleEntriesForSingleNicWithQuotesFromWmicOutput()
+    {
+        $contents = '
+Node,DNSServerSearchOrder
+ACE,
+ACE,{"192.168.2.1","192.168.2.2"}
+ACE,
+';
+        $expected = array('192.168.2.1', '192.168.2.2');
+
+        $config = Config::loadWmicBlocking($this->echoCommand($contents));
+
+        $this->assertEquals($expected, $config->nameservers);
+    }
+
+    private function echoCommand($output)
+    {
+        return 'echo ' . escapeshellarg($output);
+    }
+}
diff --git a/assets/php/vendor/react/dns/tests/Config/FilesystemFactoryTest.php b/assets/php/vendor/react/dns/tests/Config/FilesystemFactoryTest.php
new file mode 100644
index 0000000..bb9eac7
--- /dev/null
+++ b/assets/php/vendor/react/dns/tests/Config/FilesystemFactoryTest.php
@@ -0,0 +1,70 @@
+<?php
+
+namespace React\Test\Dns\Config;
+
+use PHPUnit\Framework\TestCase;
+use React\Dns\Config\FilesystemFactory;
+
+class FilesystemFactoryTest extends TestCase
+{
+    /** @test */
+    public function parseEtcResolvConfShouldParseCorrectly()
+    {
+        $contents = '#
+# Mac OS X Notice
+#
+# This file is not used by the host name and address resolution
+# or the DNS query routing mechanisms used by most processes on
+# this Mac OS X system.
+#
+# This file is automatically generated.
+#
+domain v.cablecom.net
+nameserver 127.0.0.1
+nameserver 8.8.8.8
+';
+        $expected = array('127.0.0.1', '8.8.8.8');
+
+        $capturedConfig = null;
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $factory = new FilesystemFactory($loop);
+        $factory->parseEtcResolvConf($contents)->then(function ($config) use (&$capturedConfig) {
+            $capturedConfig = $config;
+        });
+
+        $this->assertNotNull($capturedConfig);
+        $this->assertSame($expected, $capturedConfig->nameservers);
+    }
+
+    /** @test */
+    public function createShouldLoadStuffFromFilesystem()
+    {
+        $this->markTestIncomplete('Filesystem API is incomplete');
+
+        $expected = array('8.8.8.8');
+
+        $triggerListener = null;
+        $capturedConfig = null;
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop
+            ->expects($this->once())
+            ->method('addReadStream')
+            ->will($this->returnCallback(function ($stream, $listener) use (&$triggerListener) {
+                $triggerListener = function () use ($stream, $listener) {
+                    call_user_func($listener, $stream);
+                };
+            }));
+
+        $factory = new FilesystemFactory($loop);
+        $factory->create(__DIR__.'/../Fixtures/etc/resolv.conf')->then(function ($config) use (&$capturedConfig) {
+            $capturedConfig = $config;
+        });
+
+        $triggerListener();
+
+        $this->assertNotNull($capturedConfig);
+        $this->assertSame($expected, $capturedConfig->nameservers);
+    }
+}
diff --git a/assets/php/vendor/react/dns/tests/Config/HostsFileTest.php b/assets/php/vendor/react/dns/tests/Config/HostsFileTest.php
new file mode 100644
index 0000000..ff74ad2
--- /dev/null
+++ b/assets/php/vendor/react/dns/tests/Config/HostsFileTest.php
@@ -0,0 +1,170 @@
+<?php
+
+namespace React\Tests\Dns\Config;
+
+use React\Tests\Dns\TestCase;
+use React\Dns\Config\HostsFile;
+
+class HostsFileTest extends TestCase
+{
+    public function testLoadsFromDefaultPath()
+    {
+        $hosts = HostsFile::loadFromPathBlocking();
+
+        $this->assertInstanceOf('React\Dns\Config\HostsFile', $hosts);
+    }
+
+    public function testDefaultShouldHaveLocalhostMapped()
+    {
+        if (DIRECTORY_SEPARATOR === '\\') {
+            $this->markTestSkipped('Not supported on Windows');
+        }
+
+        $hosts = HostsFile::loadFromPathBlocking();
+
+        $this->assertContains('127.0.0.1', $hosts->getIpsForHost('localhost'));
+    }
+
+    /**
+     * @expectedException RuntimeException
+     */
+    public function testLoadThrowsForInvalidPath()
+    {
+        HostsFile::loadFromPathBlocking('does/not/exist');
+    }
+
+    public function testContainsSingleLocalhostEntry()
+    {
+        $hosts = new HostsFile('127.0.0.1 localhost');
+
+        $this->assertEquals(array('127.0.0.1'), $hosts->getIpsForHost('localhost'));
+        $this->assertEquals(array(), $hosts->getIpsForHost('example.com'));
+    }
+
+    public function testNonIpReturnsNothingForInvalidHosts()
+    {
+        $hosts = new HostsFile('a b');
+
+        $this->assertEquals(array(), $hosts->getIpsForHost('a'));
+        $this->assertEquals(array(), $hosts->getIpsForHost('b'));
+    }
+
+    public function testIgnoresIpv6ZoneId()
+    {
+        $hosts = new HostsFile('fe80::1%lo0 localhost');
+
+        $this->assertEquals(array('fe80::1'), $hosts->getIpsForHost('localhost'));
+    }
+
+    public function testSkipsComments()
+    {
+        $hosts = new HostsFile('# start' . PHP_EOL .'#127.0.0.1 localhost' . PHP_EOL . '127.0.0.2 localhost # example.com');
+
+        $this->assertEquals(array('127.0.0.2'), $hosts->getIpsForHost('localhost'));
+        $this->assertEquals(array(), $hosts->getIpsForHost('example.com'));
+    }
+
+    public function testContainsSingleLocalhostEntryWithCaseIgnored()
+    {
+        $hosts = new HostsFile('127.0.0.1 LocalHost');
+
+        $this->assertEquals(array('127.0.0.1'), $hosts->getIpsForHost('LOCALHOST'));
+    }
+
+    public function testEmptyFileContainsNothing()
+    {
+        $hosts = new HostsFile('');
+
+        $this->assertEquals(array(), $hosts->getIpsForHost('example.com'));
+    }
+
+    public function testSingleEntryWithMultipleNames()
+    {
+        $hosts = new HostsFile('127.0.0.1 localhost example.com');
+
+        $this->assertEquals(array('127.0.0.1'), $hosts->getIpsForHost('example.com'));
+        $this->assertEquals(array('127.0.0.1'), $hosts->getIpsForHost('localhost'));
+    }
+
+    public function testMergesEntriesOverMultipleLines()
+    {
+        $hosts = new HostsFile("127.0.0.1 localhost\n127.0.0.2 localhost\n127.0.0.3 a localhost b\n127.0.0.4 a localhost");
+
+        $this->assertEquals(array('127.0.0.1', '127.0.0.2', '127.0.0.3', '127.0.0.4'), $hosts->getIpsForHost('localhost'));
+    }
+
+    public function testMergesIpv4AndIpv6EntriesOverMultipleLines()
+    {
+        $hosts = new HostsFile("127.0.0.1 localhost\n::1 localhost");
+
+        $this->assertEquals(array('127.0.0.1', '::1'), $hosts->getIpsForHost('localhost'));
+    }
+
+    public function testReverseLookup()
+    {
+        $hosts = new HostsFile('127.0.0.1 localhost');
+
+        $this->assertEquals(array('localhost'), $hosts->getHostsForIp('127.0.0.1'));
+        $this->assertEquals(array(), $hosts->getHostsForIp('192.168.1.1'));
+    }
+
+    public function testReverseSkipsComments()
+    {
+        $hosts = new HostsFile("# start\n#127.0.0.1 localhosted\n127.0.0.2\tlocalhost\t# example.com\n\t127.0.0.3\t\texample.org\t\t");
+
+        $this->assertEquals(array(), $hosts->getHostsForIp('127.0.0.1'));
+        $this->assertEquals(array('localhost'), $hosts->getHostsForIp('127.0.0.2'));
+        $this->assertEquals(array('example.org'), $hosts->getHostsForIp('127.0.0.3'));
+    }
+
+    public function testReverseNonIpReturnsNothing()
+    {
+        $hosts = new HostsFile('127.0.0.1 localhost');
+
+        $this->assertEquals(array(), $hosts->getHostsForIp('localhost'));
+        $this->assertEquals(array(), $hosts->getHostsForIp('127.0.0.1.1'));
+    }
+
+    public function testReverseNonIpReturnsNothingForInvalidHosts()
+    {
+        $hosts = new HostsFile('a b');
+
+        $this->assertEquals(array(), $hosts->getHostsForIp('a'));
+        $this->assertEquals(array(), $hosts->getHostsForIp('b'));
+    }
+
+    public function testReverseLookupReturnsLowerCaseHost()
+    {
+        $hosts = new HostsFile('127.0.0.1 LocalHost');
+
+        $this->assertEquals(array('localhost'), $hosts->getHostsForIp('127.0.0.1'));
+    }
+
+    public function testReverseLookupChecksNormalizedIpv6()
+    {
+        $hosts = new HostsFile('FE80::00a1 localhost');
+
+        $this->assertEquals(array('localhost'), $hosts->getHostsForIp('fe80::A1'));
+    }
+
+    public function testReverseLookupIgnoresIpv6ZoneId()
+    {
+        $hosts = new HostsFile('fe80::1%lo0 localhost');
+
+        $this->assertEquals(array('localhost'), $hosts->getHostsForIp('fe80::1'));
+    }
+
+    public function testReverseLookupReturnsMultipleHostsOverSingleLine()
+    {
+        $hosts = new HostsFile("::1 ip6-localhost ip6-loopback");
+
+        $this->assertEquals(array('ip6-localhost', 'ip6-loopback'), $hosts->getHostsForIp('::1'));
+    }
+
+    public function testReverseLookupReturnsMultipleHostsOverMultipleLines()
+    {
+        $hosts = new HostsFile("::1 ip6-localhost\n::1 ip6-loopback");
+
+        $this->assertEquals(array('ip6-localhost', 'ip6-loopback'), $hosts->getHostsForIp('::1'));
+    }
+}
diff --git a/assets/php/vendor/react/dns/tests/Fixtures/etc/resolv.conf b/assets/php/vendor/react/dns/tests/Fixtures/etc/resolv.conf
new file mode 100644
index 0000000..cae093a
--- /dev/null
+++ b/assets/php/vendor/react/dns/tests/Fixtures/etc/resolv.conf
@@ -0,0 +1 @@
+nameserver 8.8.8.8
diff --git a/assets/php/vendor/react/dns/tests/FunctionalResolverTest.php b/assets/php/vendor/react/dns/tests/FunctionalResolverTest.php
new file mode 100644
index 0000000..0807e86
--- /dev/null
+++ b/assets/php/vendor/react/dns/tests/FunctionalResolverTest.php
@@ -0,0 +1,71 @@
+<?php
+
+namespace React\Tests\Dns;
+
+use React\Tests\Dns\TestCase;
+use React\EventLoop\Factory as LoopFactory;
+use React\Dns\Resolver\Resolver;
+use React\Dns\Resolver\Factory;
+
+class FunctionalTest extends TestCase
+{
+    public function setUp()
+    {
+        $this->loop = LoopFactory::create();
+
+        $factory = new Factory();
+        $this->resolver = $factory->create('8.8.8.8', $this->loop);
+    }
+
+    public function testResolveLocalhostResolves()
+    {
+        $promise = $this->resolver->resolve('localhost');
+        $promise->then($this->expectCallableOnce(), $this->expectCallableNever());
+
+        $this->loop->run();
+    }
+
+    /**
+     * @group internet
+     */
+    public function testResolveGoogleResolves()
+    {
+        $promise = $this->resolver->resolve('google.com');
+        $promise->then($this->expectCallableOnce(), $this->expectCallableNever());
+
+        $this->loop->run();
+    }
+
+    /**
+     * @group internet
+     */
+    public function testResolveInvalidRejects()
+    {
+        $promise = $this->resolver->resolve('example.invalid');
+        $promise->then($this->expectCallableNever(), $this->expectCallableOnce());
+
+        $this->loop->run();
+    }
+
+    public function testResolveCancelledRejectsImmediately()
+    {
+        $promise = $this->resolver->resolve('google.com');
+        $promise->then($this->expectCallableNever(), $this->expectCallableOnce());
+        $promise->cancel();
+
+        $time = microtime(true);
+        $this->loop->run();
+        $time = microtime(true) - $time;
+
+        $this->assertLessThan(0.1, $time);
+    }
+
+    public function testInvalidResolverDoesNotResolveGoogle()
+    {
+        $factory = new Factory();
+        $this->resolver = $factory->create('255.255.255.255', $this->loop);
+
+        $promise = $this->resolver->resolve('google.com');
+        $promise->then($this->expectCallableNever(), $this->expectCallableOnce());
+    }
+}
diff --git a/assets/php/vendor/react/dns/tests/Model/MessageTest.php b/assets/php/vendor/react/dns/tests/Model/MessageTest.php
new file mode 100644
index 0000000..53d6b28
--- /dev/null
+++ b/assets/php/vendor/react/dns/tests/Model/MessageTest.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace React\Tests\Dns\Model;
+
+use PHPUnit\Framework\TestCase;
+use React\Dns\Query\Query;
+use React\Dns\Model\Message;
+
+class MessageTest extends TestCase
+{
+    public function testCreateRequestDesiresRecusion()
+    {
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+        $request = Message::createRequestForQuery($query);
+
+        $this->assertTrue($request->header->isQuery());
+        $this->assertSame(1, $request->header->get('rd'));
+    }
+
+    public function testCreateResponseWithNoAnswers()
+    {
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+        $answers = array();
+        $request = Message::createResponseWithAnswersForQuery($query, $answers);
+
+        $this->assertFalse($request->header->isQuery());
+        $this->assertTrue($request->header->isResponse());
+        $this->assertEquals(0, $request->header->get('anCount'));
+    }
+}
diff --git a/assets/php/vendor/react/dns/tests/Protocol/BinaryDumperTest.php b/assets/php/vendor/react/dns/tests/Protocol/BinaryDumperTest.php
new file mode 100644
index 0000000..bf60ca9
--- /dev/null
+++ b/assets/php/vendor/react/dns/tests/Protocol/BinaryDumperTest.php
@@ -0,0 +1,48 @@
+<?php
+
+namespace React\Tests\Dns\Protocol;
+
+use PHPUnit\Framework\TestCase;
+use React\Dns\Protocol\BinaryDumper;
+use React\Dns\Model\Message;
+
+class BinaryDumperTest extends TestCase
+{
+    public function testRequestToBinary()
+    {
+        $data = "";
+        $data .= "72 62 01 00 00 01 00 00 00 00 00 00"; // header
+        $data .= "04 69 67 6f 72 02 69 6f 00";          // question: igor.io
+        $data .= "00 01 00 01";                         // question: type A, class IN
+
+        $expected = $this->formatHexDump(str_replace(' ', '', $data), 2);
+
+        $request = new Message();
+        $request->header->set('id', 0x7262);
+        $request->header->set('rd', 1);
+
+        $request->questions[] = array(
+            'name'  => 'igor.io',
+            'type'  => Message::TYPE_A,
+            'class' => Message::CLASS_IN,
+        );
+
+        $request->prepare();
+
+        $dumper = new BinaryDumper();
+        $data = $dumper->toBinary($request);
+        $data = $this->convertBinaryToHexDump($data);
+
+        $this->assertSame($expected, $data);
+    }
+
+    private function convertBinaryToHexDump($input)
+    {
+        return $this->formatHexDump(implode('', unpack('H*', $input)));
+    }
+
+    private function formatHexDump($input)
+    {
+        return implode(' ', str_split($input, 2));
+    }
+}
diff --git a/assets/php/vendor/react/dns/tests/Protocol/ParserTest.php b/assets/php/vendor/react/dns/tests/Protocol/ParserTest.php
new file mode 100644
index 0000000..195fad2
--- /dev/null
+++ b/assets/php/vendor/react/dns/tests/Protocol/ParserTest.php
@@ -0,0 +1,343 @@
+<?php
+
+namespace React\Tests\Dns\Protocol;
+
+use PHPUnit\Framework\TestCase;
+use React\Dns\Protocol\Parser;
+use React\Dns\Model\Message;
+
+class ParserTest extends TestCase
+{
+    public function setUp()
+    {
+        $this->parser = new Parser();
+    }
+
+    /**
+     * @dataProvider provideConvertTcpDumpToBinary
+     */
+    public function testConvertTcpDumpToBinary($expected, $data)
+    {
+        $this->assertSame($expected, $this->convertTcpDumpToBinary($data));
+    }
+
+    public function provideConvertTcpDumpToBinary()
+    {
+        return array(
+            array(chr(0x72).chr(0x62), "72 62"),
+            array(chr(0x72).chr(0x62).chr(0x01).chr(0x00), "72 62 01 00"),
+            array(chr(0x72).chr(0x62).chr(0x01).chr(0x00).chr(0x00).chr(0x01), "72 62 01 00 00 01"),
+            array(chr(0x01).chr(0x00).chr(0x01), "01 00 01"),
+        );
+    }
+
+    public function testParseRequest()
+    {
+        $data = "";
+        $data .= "72 62 01 00 00 01 00 00 00 00 00 00"; // header
+        $data .= "04 69 67 6f 72 02 69 6f 00";          // question: igor.io
+        $data .= "00 01 00 01";                         // question: type A, class IN
+
+        $data = $this->convertTcpDumpToBinary($data);
+
+        $request = $this->parser->parseMessage($data);
+
+        $header = $request->header;
+        $this->assertSame(0x7262, $header->get('id'));
+        $this->assertSame(1, $header->get('qdCount'));
+        $this->assertSame(0, $header->get('anCount'));
+        $this->assertSame(0, $header->get('nsCount'));
+        $this->assertSame(0, $header->get('arCount'));
+        $this->assertSame(0, $header->get('qr'));
+        $this->assertSame(Message::OPCODE_QUERY, $header->get('opcode'));
+        $this->assertSame(0, $header->get('aa'));
+        $this->assertSame(0, $header->get('tc'));
+        $this->assertSame(1, $header->get('rd'));
+        $this->assertSame(0, $header->get('ra'));
+        $this->assertSame(0, $header->get('z'));
+        $this->assertSame(Message::RCODE_OK, $header->get('rcode'));
+
+        $this->assertCount(1, $request->questions);
+        $this->assertSame('igor.io', $request->questions[0]['name']);
+        $this->assertSame(Message::TYPE_A, $request->questions[0]['type']);
+        $this->assertSame(Message::CLASS_IN, $request->questions[0]['class']);
+    }
+
+    public function testParseResponse()
+    {
+        $data = "";
+        $data .= "72 62 81 80 00 01 00 01 00 00 00 00"; // header
+        $data .= "04 69 67 6f 72 02 69 6f 00";          // question: igor.io
+        $data .= "00 01 00 01";                         // question: type A, class IN
+        $data .= "c0 0c";                               // answer: offset pointer to igor.io
+        $data .= "00 01 00 01";                         // answer: type A, class IN
+        $data .= "00 01 51 80";                         // answer: ttl 86400
+        $data .= "00 04";                               // answer: rdlength 4
+        $data .= "b2 4f a9 83";                         // answer: rdata 178.79.169.131
+
+        $data = $this->convertTcpDumpToBinary($data);
+
+        $response = $this->parser->parseMessage($data);
+
+        $header = $response->header;
+        $this->assertSame(0x7262, $header->get('id'));
+        $this->assertSame(1, $header->get('qdCount'));
+        $this->assertSame(1, $header->get('anCount'));
+        $this->assertSame(0, $header->get('nsCount'));
+        $this->assertSame(0, $header->get('arCount'));
+        $this->assertSame(1, $header->get('qr'));
+        $this->assertSame(Message::OPCODE_QUERY, $header->get('opcode'));
+        $this->assertSame(0, $header->get('aa'));
+        $this->assertSame(0, $header->get('tc'));
+        $this->assertSame(1, $header->get('rd'));
+        $this->assertSame(1, $header->get('ra'));
+        $this->assertSame(0, $header->get('z'));
+        $this->assertSame(Message::RCODE_OK, $header->get('rcode'));
+
+        $this->assertCount(1, $response->questions);
+        $this->assertSame('igor.io', $response->questions[0]['name']);
+        $this->assertSame(Message::TYPE_A, $response->questions[0]['type']);
+        $this->assertSame(Message::CLASS_IN, $response->questions[0]['class']);
+
+        $this->assertCount(1, $response->answers);
+        $this->assertSame('igor.io', $response->answers[0]->name);
+        $this->assertSame(Message::TYPE_A, $response->answers[0]->type);
+        $this->assertSame(Message::CLASS_IN, $response->answers[0]->class);
+        $this->assertSame(86400, $response->answers[0]->ttl);
+        $this->assertSame('178.79.169.131', $response->answers[0]->data);
+    }
+
+    public function testParseQuestionWithTwoQuestions()
+    {
+        $data = "";
+        $data .= "04 69 67 6f 72 02 69 6f 00";              // question: igor.io
+        $data .= "00 01 00 01";                             // question: type A, class IN
+        $data .= "03 77 77 77 04 69 67 6f 72 02 69 6f 00";  // question: www.igor.io
+        $data .= "00 01 00 01";                             // question: type A, class IN
+
+        $data = $this->convertTcpDumpToBinary($data);
+
+        $request = new Message();
+        $request->header->set('qdCount', 2);
+        $request->data = $data;
+
+        $this->parser->parseQuestion($request);
+
+        $this->assertCount(2, $request->questions);
+        $this->assertSame('igor.io', $request->questions[0]['name']);
+        $this->assertSame(Message::TYPE_A, $request->questions[0]['type']);
+        $this->assertSame(Message::CLASS_IN, $request->questions[0]['class']);
+        $this->assertSame('www.igor.io', $request->questions[1]['name']);
+        $this->assertSame(Message::TYPE_A, $request->questions[1]['type']);
+        $this->assertSame(Message::CLASS_IN, $request->questions[1]['class']);
+    }
+
+    public function testParseAnswerWithInlineData()
+    {
+        $data = "";
+        $data .= "04 69 67 6f 72 02 69 6f 00";          // answer: igor.io
+        $data .= "00 01 00 01";                         // answer: type A, class IN
+        $data .= "00 01 51 80";                         // answer: ttl 86400
+        $data .= "00 04";                               // answer: rdlength 4
+        $data .= "b2 4f a9 83";                         // answer: rdata 178.79.169.131
+
+        $data = $this->convertTcpDumpToBinary($data);
+
+        $response = new Message();
+        $response->header->set('anCount', 1);
+        $response->data = $data;
+
+        $this->parser->parseAnswer($response);
+
+        $this->assertCount(1, $response->answers);
+        $this->assertSame('igor.io', $response->answers[0]->name);
+        $this->assertSame(Message::TYPE_A, $response->answers[0]->type);
+        $this->assertSame(Message::CLASS_IN, $response->answers[0]->class);
+        $this->assertSame(86400, $response->answers[0]->ttl);
+        $this->assertSame('178.79.169.131', $response->answers[0]->data);
+    }
+
+    public function testParseResponseWithCnameAndOffsetPointers()
+    {
+        $data = "";
+        $data .= "9e 8d 81 80 00 01 00 01 00 00 00 00";                 // header
+        $data .= "04 6d 61 69 6c 06 67 6f 6f 67 6c 65 03 63 6f 6d 00";  // question: mail.google.com
+        $data .= "00 05 00 01";                                         // question: type CNAME, class IN
+        $data .= "c0 0c";                                               // answer: offset pointer to mail.google.com
+        $data .= "00 05 00 01";                                         // answer: type CNAME, class IN
+        $data .= "00 00 a8 9c";                                         // answer: ttl 43164
+        $data .= "00 0f";                                               // answer: rdlength 15
+        $data .= "0a 67 6f 6f 67 6c 65 6d 61 69 6c 01 6c";              // answer: rdata googlemail.l.
+        $data .= "c0 11";                                               // answer: rdata offset pointer to google.com
+
+        $data = $this->convertTcpDumpToBinary($data);
+
+        $response = $this->parser->parseMessage($data);
+
+        $this->assertCount(1, $response->questions);
+        $this->assertSame('mail.google.com', $response->questions[0]['name']);
+        $this->assertSame(Message::TYPE_CNAME, $response->questions[0]['type']);
+        $this->assertSame(Message::CLASS_IN, $response->questions[0]['class']);
+
+        $this->assertCount(1, $response->answers);
+        $this->assertSame('mail.google.com', $response->answers[0]->name);
+        $this->assertSame(Message::TYPE_CNAME, $response->answers[0]->type);
+        $this->assertSame(Message::CLASS_IN, $response->answers[0]->class);
+        $this->assertSame(43164, $response->answers[0]->ttl);
+        $this->assertSame('googlemail.l.google.com', $response->answers[0]->data);
+    }
+
+    public function testParseAAAAResponse()
+    {
+        $data = "";
+        $data .= "cd 72 81 80 00 01 00 01 00 00 00 00 06";          // header
+        $data .= "67 6f 6f 67 6c 65 03 63 6f 6d 00";                // question: google.com
+        $data .= "00 1c 00 01";                                     // question: type AAAA, class IN
+        $data .= "c0 0c";                                           // answer: offset pointer to google.com
+        $data .= "00 1c 00 01";                                     // answer: type AAAA, class IN
+        $data .= "00 00 01 2b";                                     // answer: ttl 299
+        $data .= "00 10";                                           // answer: rdlength 16
+        $data .= "2a 00 14 50 40 09 08 09 00 00 00 00 00 00 20 0e"; // answer: 2a00:1450:4009:809::200e
+
+        $data = $this->convertTcpDumpToBinary($data);
+
+        $response = $this->parser->parseMessage($data);
+
+        $header = $response->header;
+        $this->assertSame(0xcd72, $header->get('id'));
+        $this->assertSame(1, $header->get('qdCount'));
+        $this->assertSame(1, $header->get('anCount'));
+        $this->assertSame(0, $header->get('nsCount'));
+        $this->assertSame(0, $header->get('arCount'));
+        $this->assertSame(1, $header->get('qr'));
+        $this->assertSame(Message::OPCODE_QUERY, $header->get('opcode'));
+        $this->assertSame(0, $header->get('aa'));
+        $this->assertSame(0, $header->get('tc'));
+        $this->assertSame(1, $header->get('rd'));
+        $this->assertSame(1, $header->get('ra'));
+        $this->assertSame(0, $header->get('z'));
+        $this->assertSame(Message::RCODE_OK, $header->get('rcode'));
+
+        $this->assertCount(1, $response->questions);
+        $this->assertSame('google.com', $response->questions[0]['name']);
+        $this->assertSame(Message::TYPE_AAAA, $response->questions[0]['type']);
+        $this->assertSame(Message::CLASS_IN, $response->questions[0]['class']);
+
+        $this->assertCount(1, $response->answers);
+        $this->assertSame('google.com', $response->answers[0]->name);
+        $this->assertSame(Message::TYPE_AAAA, $response->answers[0]->type);
+        $this->assertSame(Message::CLASS_IN, $response->answers[0]->class);
+        $this->assertSame(299, $response->answers[0]->ttl);
+        $this->assertSame('2a00:1450:4009:809::200e', $response->answers[0]->data);
+    }
+
+    public function testParseResponseWithTwoAnswers()
+    {
+        $data = "";
+        $data .= "bc 73 81 80 00 01 00 02 00 00 00 00";                 // header
+        $data .= "02 69 6f 0d 77 68 6f 69 73 2d 73 65 72 76 65 72 73 03 6e 65 74 00";
+                                                                        // question: io.whois-servers.net
+        $data .= "00 01 00 01";                                         // question: type A, class IN
+        $data .= "c0 0c";                                               // answer: offset pointer to io.whois-servers.net
+        $data .= "00 05 00 01";                                         // answer: type CNAME, class IN
+        $data .= "00 00 00 29";                                         // answer: ttl 41
+        $data .= "00 0e";                                               // answer: rdlength 14
+        $data .= "05 77 68 6f 69 73 03 6e 69 63 02 69 6f 00";           // answer: rdata whois.nic.io
+        $data .= "c0 32";                                               // answer: offset pointer to whois.nic.io
+        $data .= "00 01 00 01";                                         // answer: type CNAME, class IN
+        $data .= "00 00 0d f7";                                         // answer: ttl 3575
+        $data .= "00 04";                                               // answer: rdlength 4
+        $data .= "c1 df 4e 98";                                         // answer: rdata 193.223.78.152
+
+        $data = $this->convertTcpDumpToBinary($data);
+
+        $response = $this->parser->parseMessage($data);
+
+        $this->assertCount(1, $response->questions);
+        $this->assertSame('io.whois-servers.net', $response->questions[0]['name']);
+        $this->assertSame(Message::TYPE_A, $response->questions[0]['type']);
+        $this->assertSame(Message::CLASS_IN, $response->questions[0]['class']);
+
+        $this->assertCount(2, $response->answers);
+
+        $this->assertSame('io.whois-servers.net', $response->answers[0]->name);
+        $this->assertSame(Message::TYPE_CNAME, $response->answers[0]->type);
+        $this->assertSame(Message::CLASS_IN, $response->answers[0]->class);
+        $this->assertSame(41, $response->answers[0]->ttl);
+        $this->assertSame('whois.nic.io', $response->answers[0]->data);
+
+        $this->assertSame('whois.nic.io', $response->answers[1]->name);
+        $this->assertSame(Message::TYPE_A, $response->answers[1]->type);
+        $this->assertSame(Message::CLASS_IN, $response->answers[1]->class);
+        $this->assertSame(3575, $response->answers[1]->ttl);
+        $this->assertSame('193.223.78.152', $response->answers[1]->data);
+    }
+
+    public function testParsePTRResponse()
+    {
+        $data = "";
+        $data .= "5d d8 81 80 00 01 00 01 00 00 00 00";             // header
+        $data .= "01 34 01 34 01 38 01 38 07 69 6e";                // question: 4.4.8.8.in-addr.arpa
+        $data .= "2d 61 64 64 72 04 61 72 70 61 00";                // question (continued)
+        $data .= "00 0c 00 01";                                     // question: type PTR, class IN
+        $data .= "c0 0c";                                           // answer: offset pointer to rdata
+        $data .= "00 0c 00 01";                                     // answer: type PTR, class IN
+        $data .= "00 01 51 7f";                                     // answer: ttl 86399
+        $data .= "00 20";                                           // answer: rdlength 32
+        $data .= "13 67 6f 6f 67 6c 65 2d 70 75 62 6c 69 63 2d 64"; // answer: rdata google-public-dns-b.google.com.
+        $data .= "6e 73 2d 62 06 67 6f 6f 67 6c 65 03 63 6f 6d 00";
+
+        $data = $this->convertTcpDumpToBinary($data);
+
+        $response = $this->parser->parseMessage($data);
+
+        $header = $response->header;
+        $this->assertSame(0x5dd8, $header->get('id'));
+        $this->assertSame(1, $header->get('qdCount'));
+        $this->assertSame(1, $header->get('anCount'));
+        $this->assertSame(0, $header->get('nsCount'));
+        $this->assertSame(0, $header->get('arCount'));
+        $this->assertSame(1, $header->get('qr'));
+        $this->assertSame(Message::OPCODE_QUERY, $header->get('opcode'));
+        $this->assertSame(0, $header->get('aa'));
+        $this->assertSame(0, $header->get('tc'));
+        $this->assertSame(1, $header->get('rd'));
+        $this->assertSame(1, $header->get('ra'));
+        $this->assertSame(0, $header->get('z'));
+        $this->assertSame(Message::RCODE_OK, $header->get('rcode'));
+
+        $this->assertCount(1, $response->questions);
+        $this->assertSame('4.4.8.8.in-addr.arpa', $response->questions[0]['name']);
+        $this->assertSame(Message::TYPE_PTR, $response->questions[0]['type']);
+        $this->assertSame(Message::CLASS_IN, $response->questions[0]['class']);
+
+        $this->assertCount(1, $response->answers);
+        $this->assertSame('4.4.8.8.in-addr.arpa', $response->answers[0]->name);
+        $this->assertSame(Message::TYPE_PTR, $response->answers[0]->type);
+        $this->assertSame(Message::CLASS_IN, $response->answers[0]->class);
+        $this->assertSame(86399, $response->answers[0]->ttl);
+        $this->assertSame('google-public-dns-b.google.com', $response->answers[0]->data);
+    }
+
+    /**
+     * @expectedException InvalidArgumentException
+     */
+    public function testParseIncomplete()
+    {
+        $data = "";
+        $data .= "72 62 01 00 00 01 00 00 00 00 00 00"; // header
+        $data .= "04 69 67 6f 72 02 69 6f 00";          // question: igor.io
+        //$data .= "00 01 00 01";                         // question: type A, class IN
+
+        $data = $this->convertTcpDumpToBinary($data);
+
+        $this->parser->parseMessage($data);
+    }
+
+    private function convertTcpDumpToBinary($input)
+    {
+        // sudo ngrep -d en1 -x port 53
+
+        return pack('H*', str_replace(' ', '', $input));
+    }
+}
diff --git a/assets/php/vendor/react/dns/tests/Query/CachedExecutorTest.php b/assets/php/vendor/react/dns/tests/Query/CachedExecutorTest.php
new file mode 100644
index 0000000..d08ed05
--- /dev/null
+++ b/assets/php/vendor/react/dns/tests/Query/CachedExecutorTest.php
@@ -0,0 +1,100 @@
+<?php
+
+namespace React\Tests\Dns\Query;
+
+use React\Tests\Dns\TestCase;
+use React\Dns\Query\CachedExecutor;
+use React\Dns\Query\Query;
+use React\Dns\Model\Message;
+use React\Dns\Model\Record;
+use React\Promise;
+
+class CachedExecutorTest extends TestCase
+{
+    /**
+     * @covers React\Dns\Query\CachedExecutor
+     * @test
+     */
+    public function queryShouldDelegateToDecoratedExecutor()
+    {
+        $executor = $this->createExecutorMock();
+        $executor
+            ->expects($this->once())
+            ->method('query')
+            ->with('8.8.8.8', $this->isInstanceOf('React\Dns\Query\Query'))
+            ->will($this->returnValue($this->createPromiseMock()));
+
+        $cache = $this->getMockBuilder('React\Dns\Query\RecordCache')
+            ->disableOriginalConstructor()
+            ->getMock();
+        $cache
+            ->expects($this->once())
+            ->method('lookup')
+            ->will($this->returnValue(Promise\reject()));
+        $cachedExecutor = new CachedExecutor($executor, $cache);
+
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+        $cachedExecutor->query('8.8.8.8', $query);
+    }
+
+    /**
+     * @covers React\Dns\Query\CachedExecutor
+     * @test
+     */
+    public function callingQueryTwiceShouldUseCachedResult()
+    {
+        $cachedRecords = array(new Record('igor.io', Message::TYPE_A, Message::CLASS_IN));
+
+        $executor = $this->createExecutorMock();
+        $executor
+            ->expects($this->once())
+            ->method('query')
+            ->will($this->callQueryCallbackWithAddress('178.79.169.131'));
+
+        $cache = $this->getMockBuilder('React\Dns\Query\RecordCache')
+            ->disableOriginalConstructor()
+            ->getMock();
+        $cache
+            ->expects($this->at(0))
+            ->method('lookup')
+            ->with($this->isInstanceOf('React\Dns\Query\Query'))
+            ->will($this->returnValue(Promise\reject()));
+        $cache
+            ->expects($this->at(1))
+            ->method('storeResponseMessage')
+            ->with($this->isType('integer'), $this->isInstanceOf('React\Dns\Model\Message'));
+        $cache
+            ->expects($this->at(2))
+            ->method('lookup')
+            ->with($this->isInstanceOf('React\Dns\Query\Query'))
+            ->will($this->returnValue(Promise\resolve($cachedRecords)));
+
+        $cachedExecutor = new CachedExecutor($executor, $cache);
+
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+        $cachedExecutor->query('8.8.8.8', $query, function () {}, function () {});
+        $cachedExecutor->query('8.8.8.8', $query, function () {}, function () {});
+    }
+
+    private function callQueryCallbackWithAddress($address)
+    {
+        return $this->returnCallback(function ($nameserver, $query) use ($address) {
+            $response = new Message();
+            $response->header->set('qr', 1);
+            $response->questions[] = new Record($query->name, $query->type, $query->class);
+            $response->answers[] = new Record($query->name, $query->type, $query->class, 3600, $address);
+
+            return Promise\resolve($response);
+        });
+    }
+
+    private function createExecutorMock()
+    {
+        return $this->getMockBuilder('React\Dns\Query\ExecutorInterface')->getMock();
+    }
+
+    private function createPromiseMock()
+    {
+        return $this->getMockBuilder('React\Promise\PromiseInterface')->getMock();
+    }
+}
diff --git a/assets/php/vendor/react/dns/tests/Query/ExecutorTest.php b/assets/php/vendor/react/dns/tests/Query/ExecutorTest.php
new file mode 100644
index 0000000..0d7ac1d
--- /dev/null
+++ b/assets/php/vendor/react/dns/tests/Query/ExecutorTest.php
@@ -0,0 +1,308 @@
+<?php
+
+namespace React\Tests\Dns\Query;
+
+use Clue\React\Block;
+use React\Dns\Query\Executor;
+use React\Dns\Query\Query;
+use React\Dns\Model\Message;
+use React\Dns\Model\Record;
+use React\Dns\Protocol\BinaryDumper;
+use React\Tests\Dns\TestCase;
+
+class ExecutorTest extends TestCase
+{
+    private $loop;
+    private $parser;
+    private $dumper;
+    private $executor;
+
+    public function setUp()
+    {
+        $this->loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $this->parser = $this->getMockBuilder('React\Dns\Protocol\Parser')->getMock();
+        $this->dumper = new BinaryDumper();
+
+        $this->executor = new Executor($this->loop, $this->parser, $this->dumper);
+    }
+
+    /** @test */
+    public function queryShouldCreateUdpRequest()
+    {
+        $timer = $this->createTimerMock();
+        $this->loop
+            ->expects($this->any())
+            ->method('addTimer')
+            ->will($this->returnValue($timer));
+
+        $this->executor = $this->createExecutorMock();
+        $this->executor
+            ->expects($this->once())
+            ->method('createConnection')
+            ->with('8.8.8.8:53', 'udp')
+            ->will($this->returnNewConnectionMock(false));
+
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+        $this->executor->query('8.8.8.8:53', $query);
+    }
+
+    /** @test */
+    public function resolveShouldRejectIfRequestIsLargerThan512Bytes()
+    {
+        $query = new Query(str_repeat('a', 512).'.igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+        $promise = $this->executor->query('8.8.8.8:53', $query);
+
+        $this->setExpectedException('RuntimeException', 'DNS query for ' . $query->name . ' failed: Requested transport "tcp" not available, only UDP is supported in this version');
+        Block\await($promise, $this->loop);
+    }
+
+    /** @test */
+    public function resolveShouldCloseConnectionWhenCancelled()
+    {
+        $conn = $this->createConnectionMock(false);
+        $conn->expects($this->once())->method('close');
+
+        $timer = $this->createTimerMock();
+        $this->loop
+            ->expects($this->any())
+            ->method('addTimer')
+            ->will($this->returnValue($timer));
+
+        $this->executor = $this->createExecutorMock();
+        $this->executor
+            ->expects($this->once())
+            ->method('createConnection')
+            ->with('8.8.8.8:53', 'udp')
+            ->will($this->returnValue($conn));
+
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+        $promise = $this->executor->query('8.8.8.8:53', $query);
+
+        $promise->cancel();
+
+        $this->setExpectedException('React\Dns\Query\CancellationException', 'DNS query for igor.io has been cancelled');
+        Block\await($promise, $this->loop);
+    }
+
+    /** @test */
+    public function resolveShouldNotStartOrCancelTimerWhenCancelledWithTimeoutIsNull()
+    {
+        $this->loop
+            ->expects($this->never())
+            ->method('addTimer');
+
+        $this->executor = new Executor($this->loop, $this->parser, $this->dumper, null);
+
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+        $promise = $this->executor->query('127.0.0.1:53', $query);
+
+        $promise->cancel();
+
+        $this->setExpectedException('React\Dns\Query\CancellationException', 'DNS query for igor.io has been cancelled');
+        Block\await($promise, $this->loop);
+    }
+
+    /** @test */
+    public function resolveShouldRejectIfResponseIsTruncated()
+    {
+        $timer = $this->createTimerMock();
+
+        $this->loop
+            ->expects($this->any())
+            ->method('addTimer')
+            ->will($this->returnValue($timer));
+
+        $this->parser
+            ->expects($this->once())
+            ->method('parseMessage')
+            ->will($this->returnTruncatedResponse());
+
+        $this->executor = $this->createExecutorMock();
+        $this->executor
+            ->expects($this->once())
+            ->method('createConnection')
+            ->with('8.8.8.8:53', 'udp')
+            ->will($this->returnNewConnectionMock());
+
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+        $this->executor->query('8.8.8.8:53', $query);
+    }
+
+    /** @test */
+    public function resolveShouldFailIfUdpThrow()
+    {
+        $this->loop
+            ->expects($this->never())
+            ->method('addTimer');
+
+        $this->parser
+            ->expects($this->never())
+            ->method('parseMessage');
+
+        $this->executor = $this->createExecutorMock();
+        $this->executor
+            ->expects($this->once())
+            ->method('createConnection')
+            ->with('8.8.8.8:53', 'udp')
+            ->will($this->throwException(new \Exception('Nope')));
+
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+        $promise = $this->executor->query('8.8.8.8:53', $query);
+
+        $this->setExpectedException('RuntimeException', 'DNS query for igor.io failed: Nope');
+        Block\await($promise, $this->loop);
+    }
+
+    /** @test */
+    public function resolveShouldCancelTimerWhenFullResponseIsReceived()
+    {
+        $conn = $this->createConnectionMock();
+
+        $this->parser
+            ->expects($this->once())
+            ->method('parseMessage')
+            ->will($this->returnStandardResponse());
+
+        $this->executor = $this->createExecutorMock();
+        $this->executor
+            ->expects($this->at(0))
+            ->method('createConnection')
+            ->with('8.8.8.8:53', 'udp')
+            ->will($this->returnNewConnectionMock());
+
+
+        $timer = $this->createTimerMock();
+
+        $this->loop
+            ->expects($this->once())
+            ->method('addTimer')
+            ->with(5, $this->isInstanceOf('Closure'))
+            ->will($this->returnValue($timer));
+
+        $this->loop
+            ->expects($this->once())
+            ->method('cancelTimer')
+            ->with($timer);
+
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+        $this->executor->query('8.8.8.8:53', $query);
+    }
+
+    /** @test */
+    public function resolveShouldCloseConnectionOnTimeout()
+    {
+        $this->executor = $this->createExecutorMock();
+        $this->executor
+            ->expects($this->at(0))
+            ->method('createConnection')
+            ->with('8.8.8.8:53', 'udp')
+            ->will($this->returnNewConnectionMock(false));
+
+        $timer = $this->createTimerMock();
+
+        $this->loop
+            ->expects($this->never())
+            ->method('cancelTimer');
+
+        $this->loop
+            ->expects($this->once())
+            ->method('addTimer')
+            ->with(5, $this->isInstanceOf('Closure'))
+            ->will($this->returnCallback(function ($time, $callback) use (&$timerCallback, $timer) {
+                $timerCallback = $callback;
+                return $timer;
+            }));
+
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+        $promise = $this->executor->query('8.8.8.8:53', $query);
+
+        $this->assertNotNull($timerCallback);
+        $timerCallback();
+
+        $this->setExpectedException('React\Dns\Query\TimeoutException', 'DNS query for igor.io timed out');
+        Block\await($promise, $this->loop);
+    }
+
+    private function returnStandardResponse()
+    {
+        $that = $this;
+        $callback = function ($data) use ($that) {
+            $response = new Message();
+            $that->convertMessageToStandardResponse($response);
+            return $response;
+        };
+
+        return $this->returnCallback($callback);
+    }
+
+    private function returnTruncatedResponse()
+    {
+        $that = $this;
+        $callback = function ($data) use ($that) {
+            $response = new Message();
+            $that->convertMessageToTruncatedResponse($response);
+            return $response;
+        };
+
+        return $this->returnCallback($callback);
+    }
+
+    public function convertMessageToStandardResponse(Message $response)
+    {
+        $response->header->set('qr', 1);
+        $response->questions[] = new Record('igor.io', Message::TYPE_A, Message::CLASS_IN);
+        $response->answers[] = new Record('igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.131');
+        $response->prepare();
+
+        return $response;
+    }
+
+    public function convertMessageToTruncatedResponse(Message $response)
+    {
+        $this->convertMessageToStandardResponse($response);
+        $response->header->set('tc', 1);
+        $response->prepare();
+
+        return $response;
+    }
+
+    private function returnNewConnectionMock($emitData = true)
+    {
+        $conn = $this->createConnectionMock($emitData);
+
+        $callback = function () use ($conn) {
+            return $conn;
+        };
+
+        return $this->returnCallback($callback);
+    }
+
+    private function createConnectionMock($emitData = true)
+    {
+        $conn = $this->getMockBuilder('React\Stream\DuplexStreamInterface')->getMock();
+        $conn
+            ->expects($this->any())
+            ->method('on')
+            ->with('data', $this->isInstanceOf('Closure'))
+            ->will($this->returnCallback(function ($name, $callback) use ($emitData) {
+                $emitData && $callback(null);
+            }));
+
+        return $conn;
+    }
+
+    private function createTimerMock()
+    {
+        return $this->getMockBuilder(
+            interface_exists('React\EventLoop\TimerInterface') ? 'React\EventLoop\TimerInterface' : 'React\EventLoop\Timer\TimerInterface'
+        )->getMock();
+    }
+
+    private function createExecutorMock()
+    {
+        return $this->getMockBuilder('React\Dns\Query\Executor')
+            ->setConstructorArgs(array($this->loop, $this->parser, $this->dumper))
+            ->setMethods(array('createConnection'))
+            ->getMock();
+    }
+}
diff --git a/assets/php/vendor/react/dns/tests/Query/HostsFileExecutorTest.php b/assets/php/vendor/react/dns/tests/Query/HostsFileExecutorTest.php
new file mode 100644
index 0000000..70d877e
--- /dev/null
+++ b/assets/php/vendor/react/dns/tests/Query/HostsFileExecutorTest.php
@@ -0,0 +1,126 @@
+<?php
+
+namespace React\Tests\Dns\Query;
+
+use React\Tests\Dns\TestCase;
+use React\Dns\Query\HostsFileExecutor;
+use React\Dns\Query\Query;
+use React\Dns\Model\Message;
+
+class HostsFileExecutorTest extends TestCase
+{
+    private $hosts;
+    private $fallback;
+    private $executor;
+
+    public function setUp()
+    {
+        $this->hosts = $this->getMockBuilder('React\Dns\Config\HostsFile')->disableOriginalConstructor()->getMock();
+        $this->fallback = $this->getMockBuilder('React\Dns\Query\ExecutorInterface')->getMock();
+        $this->executor = new HostsFileExecutor($this->hosts, $this->fallback);
+    }
+
+    public function testDoesNotTryToGetIpsForMxQuery()
+    {
+        $this->hosts->expects($this->never())->method('getIpsForHost');
+        $this->fallback->expects($this->once())->method('query');
+
+        $this->executor->query('8.8.8.8', new Query('google.com', Message::TYPE_MX, Message::CLASS_IN, 0));
+    }
+
+    public function testFallsBackIfNoIpsWereFound()
+    {
+        $this->hosts->expects($this->once())->method('getIpsForHost')->willReturn(array());
+        $this->fallback->expects($this->once())->method('query');
+
+        $this->executor->query('8.8.8.8', new Query('google.com', Message::TYPE_A, Message::CLASS_IN, 0));
+    }
+
+    public function testReturnsResponseMessageIfIpsWereFound()
+    {
+        $this->hosts->expects($this->once())->method('getIpsForHost')->willReturn(array('127.0.0.1'));
+        $this->fallback->expects($this->never())->method('query');
+
+        $ret = $this->executor->query('8.8.8.8', new Query('google.com', Message::TYPE_A, Message::CLASS_IN, 0));
+    }
+
+    public function testFallsBackIfNoIpv4Matches()
+    {
+        $this->hosts->expects($this->once())->method('getIpsForHost')->willReturn(array('::1'));
+        $this->fallback->expects($this->once())->method('query');
+
+        $ret = $this->executor->query('8.8.8.8', new Query('google.com', Message::TYPE_A, Message::CLASS_IN, 0));
+    }
+
+    public function testReturnsResponseMessageIfIpv6AddressesWereFound()
+    {
+        $this->hosts->expects($this->once())->method('getIpsForHost')->willReturn(array('::1'));
+        $this->fallback->expects($this->never())->method('query');
+
+        $ret = $this->executor->query('8.8.8.8', new Query('google.com', Message::TYPE_AAAA, Message::CLASS_IN, 0));
+    }
+
+    public function testFallsBackIfNoIpv6Matches()
+    {
+        $this->hosts->expects($this->once())->method('getIpsForHost')->willReturn(array('127.0.0.1'));
+        $this->fallback->expects($this->once())->method('query');
+
+        $ret = $this->executor->query('8.8.8.8', new Query('google.com', Message::TYPE_AAAA, Message::CLASS_IN, 0));
+    }
+
+    public function testDoesReturnReverseIpv4Lookup()
+    {
+        $this->hosts->expects($this->once())->method('getHostsForIp')->with('127.0.0.1')->willReturn(array('localhost'));
+        $this->fallback->expects($this->never())->method('query');
+
+        $this->executor->query('8.8.8.8', new Query('1.0.0.127.in-addr.arpa', Message::TYPE_PTR, Message::CLASS_IN, 0));
+    }
+
+    public function testFallsBackIfNoReverseIpv4Matches()
+    {
+        $this->hosts->expects($this->once())->method('getHostsForIp')->with('127.0.0.1')->willReturn(array());
+        $this->fallback->expects($this->once())->method('query');
+
+        $this->executor->query('8.8.8.8', new Query('1.0.0.127.in-addr.arpa', Message::TYPE_PTR, Message::CLASS_IN, 0));
+    }
+
+    public function testDoesReturnReverseIpv6Lookup()
+    {
+        $this->hosts->expects($this->once())->method('getHostsForIp')->with('2a02:2e0:3fe:100::6')->willReturn(array('ip6-localhost'));
+        $this->fallback->expects($this->never())->method('query');
+
+        $this->executor->query('8.8.8.8', new Query('6.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.e.f.3.0.0.e.2.0.2.0.a.2.ip6.arpa', Message::TYPE_PTR, Message::CLASS_IN, 0));
+    }
+
+    public function testFallsBackForInvalidAddress()
+    {
+        $this->hosts->expects($this->never())->method('getHostsForIp');
+        $this->fallback->expects($this->once())->method('query');
+
+        $this->executor->query('8.8.8.8', new Query('example.com', Message::TYPE_PTR, Message::CLASS_IN, 0));
+    }
+
+    public function testReverseFallsBackForInvalidIpv4Address()
+    {
+        $this->hosts->expects($this->never())->method('getHostsForIp');
+        $this->fallback->expects($this->once())->method('query');
+
+        $this->executor->query('8.8.8.8', new Query('::1.in-addr.arpa', Message::TYPE_PTR, Message::CLASS_IN, 0));
+    }
+
+    public function testReverseFallsBackForInvalidLengthIpv6Address()
+    {
+        $this->hosts->expects($this->never())->method('getHostsForIp');
+        $this->fallback->expects($this->once())->method('query');
+
+        $this->executor->query('8.8.8.8', new Query('abcd.ip6.arpa', Message::TYPE_PTR, Message::CLASS_IN, 0));
+    }
+
+    public function testReverseFallsBackForInvalidHexIpv6Address()
+    {
+        $this->hosts->expects($this->never())->method('getHostsForIp');
+        $this->fallback->expects($this->once())->method('query');
+
+        $this->executor->query('8.8.8.8', new Query('zZz.ip6.arpa', Message::TYPE_PTR, Message::CLASS_IN, 0));
+    }
+}
diff --git a/assets/php/vendor/react/dns/tests/Query/RecordBagTest.php b/assets/php/vendor/react/dns/tests/Query/RecordBagTest.php
new file mode 100644
index 0000000..83b8934
--- /dev/null
+++ b/assets/php/vendor/react/dns/tests/Query/RecordBagTest.php
@@ -0,0 +1,64 @@
+<?php
+
+namespace React\Tests\Dns\Query;
+
+use PHPUnit\Framework\TestCase;
+use React\Dns\Query\RecordBag;
+use React\Dns\Model\Message;
+use React\Dns\Model\Record;
+
+class RecordBagTest extends TestCase
+{
+    /**
+    * @covers React\Dns\Query\RecordBag
+    * @test
+    */
+    public function emptyBagShouldBeEmpty()
+    {
+        $recordBag = new RecordBag();
+
+        $this->assertSame(array(), $recordBag->all());
+    }
+
+    /**
+    * @covers React\Dns\Query\RecordBag
+    * @test
+    */
+    public function setShouldSetTheValue()
+    {
+        $currentTime = 1345656451;
+
+        $recordBag = new RecordBag();
+        $recordBag->set($currentTime, new Record('igor.io', Message::TYPE_A, Message::CLASS_IN, 3600));
+
+        $records = $recordBag->all();
+        $this->assertCount(1, $records);
+        $this->assertSame('igor.io', $records[0]->name);
+        $this->assertSame(Message::TYPE_A, $records[0]->type);
+        $this->assertSame(Message::CLASS_IN, $records[0]->class);
+    }
+
+    /**
+    * @covers React\Dns\Query\RecordBag
+    * @test
+    */
+    public function setShouldSetManyValues()
+    {
+        $currentTime = 1345656451;
+
+        $recordBag = new RecordBag();
+        $recordBag->set($currentTime, new Record('igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.131'));
+        $recordBag->set($currentTime, new Record('igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.132'));
+
+        $records = $recordBag->all();
+        $this->assertCount(2, $records);
+        $this->assertSame('igor.io', $records[0]->name);
+        $this->assertSame(Message::TYPE_A, $records[0]->type);
+        $this->assertSame(Message::CLASS_IN, $records[0]->class);
+        $this->assertSame('178.79.169.131', $records[0]->data);
+        $this->assertSame('igor.io', $records[1]->name);
+        $this->assertSame(Message::TYPE_A, $records[1]->type);
+        $this->assertSame(Message::CLASS_IN, $records[1]->class);
+        $this->assertSame('178.79.169.132', $records[1]->data);
+    }
+}
diff --git a/assets/php/vendor/react/dns/tests/Query/RecordCacheTest.php b/assets/php/vendor/react/dns/tests/Query/RecordCacheTest.php
new file mode 100644
index 0000000..399fbe8
--- /dev/null
+++ b/assets/php/vendor/react/dns/tests/Query/RecordCacheTest.php
@@ -0,0 +1,123 @@
+<?php
+
+namespace React\Tests\Dns\Query;
+
+use PHPUnit\Framework\TestCase;
+use React\Cache\ArrayCache;
+use React\Dns\Model\Message;
+use React\Dns\Model\Record;
+use React\Dns\Query\RecordCache;
+use React\Dns\Query\Query;
+use React\Promise\PromiseInterface;
+
+class RecordCacheTest extends TestCase
+{
+    /**
+    * @covers React\Dns\Query\RecordCache
+    * @test
+    */
+    public function lookupOnEmptyCacheShouldReturnNull()
+    {
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+
+        $cache = new RecordCache(new ArrayCache());
+        $promise = $cache->lookup($query);
+
+        $this->assertInstanceOf('React\Promise\RejectedPromise', $promise);
+    }
+
+    /**
+    * @covers React\Dns\Query\RecordCache
+    * @test
+    */
+    public function storeRecordShouldMakeLookupSucceed()
+    {
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+
+        $cache = new RecordCache(new ArrayCache());
+        $cache->storeRecord($query->currentTime, new Record('igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.131'));
+        $promise = $cache->lookup($query);
+
+        $this->assertInstanceOf('React\Promise\FulfilledPromise', $promise);
+        $cachedRecords = $this->getPromiseValue($promise);
+
+        $this->assertCount(1, $cachedRecords);
+        $this->assertSame('178.79.169.131', $cachedRecords[0]->data);
+    }
+
+    /**
+    * @covers React\Dns\Query\RecordCache
+    * @test
+    */
+    public function storeTwoRecordsShouldReturnBoth()
+    {
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+
+        $cache = new RecordCache(new ArrayCache());
+        $cache->storeRecord($query->currentTime, new Record('igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.131'));
+        $cache->storeRecord($query->currentTime, new Record('igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.132'));
+        $promise = $cache->lookup($query);
+
+        $this->assertInstanceOf('React\Promise\FulfilledPromise', $promise);
+        $cachedRecords = $this->getPromiseValue($promise);
+
+        $this->assertCount(2, $cachedRecords);
+        $this->assertSame('178.79.169.131', $cachedRecords[0]->data);
+        $this->assertSame('178.79.169.132', $cachedRecords[1]->data);
+    }
+
+    /**
+    * @covers React\Dns\Query\RecordCache
+    * @test
+    */
+    public function storeResponseMessageShouldStoreAllAnswerValues()
+    {
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+
+        $response = new Message();
+        $response->answers[] = new Record('igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.131');
+        $response->answers[] = new Record('igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.132');
+        $response->prepare();
+
+        $cache = new RecordCache(new ArrayCache());
+        $cache->storeResponseMessage($query->currentTime, $response);
+        $promise = $cache->lookup($query);
+
+        $this->assertInstanceOf('React\Promise\FulfilledPromise', $promise);
+        $cachedRecords = $this->getPromiseValue($promise);
+
+        $this->assertCount(2, $cachedRecords);
+        $this->assertSame('178.79.169.131', $cachedRecords[0]->data);
+        $this->assertSame('178.79.169.132', $cachedRecords[1]->data);
+    }
+
+    /**
+    * @covers React\Dns\Query\RecordCache
+    * @test
+    */
+    public function expireShouldExpireDeadRecords()
+    {
+        $cachedTime = 1345656451;
+        $currentTime = $cachedTime + 3605;
+
+        $cache = new RecordCache(new ArrayCache());
+        $cache->storeRecord($cachedTime, new Record('igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.131'));
+        $cache->expire($currentTime);
+
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, $currentTime);
+        $promise = $cache->lookup($query);
+
+        $this->assertInstanceOf('React\Promise\RejectedPromise', $promise);
+    }
+
+    private function getPromiseValue(PromiseInterface $promise)
+    {
+        $capturedValue = null;
+
+        $promise->then(function ($value) use (&$capturedValue) {
+            $capturedValue = $value;
+        });
+
+        return $capturedValue;
+    }
+}
diff --git a/assets/php/vendor/react/dns/tests/Query/RetryExecutorTest.php b/assets/php/vendor/react/dns/tests/Query/RetryExecutorTest.php
new file mode 100644
index 0000000..8950f84
--- /dev/null
+++ b/assets/php/vendor/react/dns/tests/Query/RetryExecutorTest.php
@@ -0,0 +1,197 @@
+<?php
+
+namespace React\Tests\Dns\Query;
+
+use React\Tests\Dns\TestCase;
+use React\Dns\Query\RetryExecutor;
+use React\Dns\Query\Query;
+use React\Dns\Model\Message;
+use React\Dns\Query\TimeoutException;
+use React\Dns\Model\Record;
+use React\Promise;
+use React\Promise\Deferred;
+use React\Dns\Query\CancellationException;
+
+class RetryExecutorTest extends TestCase
+{
+    /**
+    * @covers React\Dns\Query\RetryExecutor
+    * @test
+    */
+    public function queryShouldDelegateToDecoratedExecutor()
+    {
+        $executor = $this->createExecutorMock();
+        $executor
+            ->expects($this->once())
+            ->method('query')
+            ->with('8.8.8.8', $this->isInstanceOf('React\Dns\Query\Query'))
+            ->will($this->returnValue($this->expectPromiseOnce()));
+
+        $retryExecutor = new RetryExecutor($executor, 2);
+
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+        $retryExecutor->query('8.8.8.8', $query);
+    }
+
+    /**
+    * @covers React\Dns\Query\RetryExecutor
+    * @test
+    */
+    public function queryShouldRetryQueryOnTimeout()
+    {
+        $response = $this->createStandardResponse();
+
+        $executor = $this->createExecutorMock();
+        $executor
+            ->expects($this->exactly(2))
+            ->method('query')
+            ->with('8.8.8.8', $this->isInstanceOf('React\Dns\Query\Query'))
+            ->will($this->onConsecutiveCalls(
+                $this->returnCallback(function ($domain, $query) {
+                    return Promise\reject(new TimeoutException("timeout"));
+                }),
+                $this->returnCallback(function ($domain, $query) use ($response) {
+                    return Promise\resolve($response);
+                })
+            ));
+
+        $callback = $this->createCallableMock();
+        $callback
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->isInstanceOf('React\Dns\Model\Message'));
+
+        $errorback = $this->expectCallableNever();
+
+        $retryExecutor = new RetryExecutor($executor, 2);
+
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+        $retryExecutor->query('8.8.8.8', $query)->then($callback, $errorback);
+    }
+
+    /**
+    * @covers React\Dns\Query\RetryExecutor
+    * @test
+    */
+    public function queryShouldStopRetryingAfterSomeAttempts()
+    {
+        $executor = $this->createExecutorMock();
+        $executor
+            ->expects($this->exactly(3))
+            ->method('query')
+            ->with('8.8.8.8', $this->isInstanceOf('React\Dns\Query\Query'))
+            ->will($this->returnCallback(function ($domain, $query) {
+                return Promise\reject(new TimeoutException("timeout"));
+            }));
+
+        $callback = $this->expectCallableNever();
+
+        $errorback = $this->createCallableMock();
+        $errorback
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->isInstanceOf('RuntimeException'));
+
+        $retryExecutor = new RetryExecutor($executor, 2);
+
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+        $retryExecutor->query('8.8.8.8', $query)->then($callback, $errorback);
+    }
+
+    /**
+    * @covers React\Dns\Query\RetryExecutor
+    * @test
+    */
+    public function queryShouldForwardNonTimeoutErrors()
+    {
+        $executor = $this->createExecutorMock();
+        $executor
+            ->expects($this->once())
+            ->method('query')
+            ->with('8.8.8.8', $this->isInstanceOf('React\Dns\Query\Query'))
+            ->will($this->returnCallback(function ($domain, $query) {
+                return Promise\reject(new \Exception);
+            }));
+
+        $callback = $this->expectCallableNever();
+
+        $errorback = $this->createCallableMock();
+        $errorback
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->isInstanceOf('Exception'));
+
+        $retryExecutor = new RetryExecutor($executor, 2);
+
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+        $retryExecutor->query('8.8.8.8', $query)->then($callback, $errorback);
+    }
+
+    /**
+     * @covers React\Dns\Query\RetryExecutor
+     * @test
+     */
+    public function queryShouldCancelQueryOnCancel()
+    {
+        $cancelled = 0;
+
+        $executor = $this->createExecutorMock();
+        $executor
+            ->expects($this->once())
+            ->method('query')
+            ->with('8.8.8.8', $this->isInstanceOf('React\Dns\Query\Query'))
+            ->will($this->returnCallback(function ($domain, $query) use (&$cancelled) {
+                $deferred = new Deferred(function ($resolve, $reject) use (&$cancelled) {
+                    ++$cancelled;
+                    $reject(new CancellationException('Cancelled'));
+                });
+
+                return $deferred->promise();
+            })
+        );
+
+        $retryExecutor = new RetryExecutor($executor, 2);
+
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+        $promise = $retryExecutor->query('8.8.8.8', $query);
+
+        $promise->then($this->expectCallableNever(), $this->expectCallableOnce());
+
+        $this->assertEquals(0, $cancelled);
+        $promise->cancel();
+        $this->assertEquals(1, $cancelled);
+    }
+
+    protected function expectPromiseOnce($return = null)
+    {
+        $mock = $this->createPromiseMock();
+        $mock
+            ->expects($this->once())
+            ->method('then')
+            ->will($this->returnValue($return));
+
+        return $mock;
+    }
+
+    protected function createExecutorMock()
+    {
+        return $this->getMockBuilder('React\Dns\Query\ExecutorInterface')->getMock();
+    }
+
+    protected function createPromiseMock()
+    {
+        return $this->getMockBuilder('React\Promise\PromiseInterface')->getMock();
+    }
+
+    protected function createStandardResponse()
+    {
+        $response = new Message();
+        $response->header->set('qr', 1);
+        $response->questions[] = new Record('igor.io', Message::TYPE_A, Message::CLASS_IN);
+        $response->answers[] = new Record('igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.131');
+        $response->prepare();
+
+        return $response;
+    }
+}
+
diff --git a/assets/php/vendor/react/dns/tests/Query/TimeoutExecutorTest.php b/assets/php/vendor/react/dns/tests/Query/TimeoutExecutorTest.php
new file mode 100644
index 0000000..0d37fb4
--- /dev/null
+++ b/assets/php/vendor/react/dns/tests/Query/TimeoutExecutorTest.php
@@ -0,0 +1,115 @@
+<?php
+
+namespace React\Tests\Dns\Query;
+
+use React\Dns\Query\TimeoutExecutor;
+use React\Dns\Query\Query;
+use React\Dns\Model\Message;
+use React\Promise\Deferred;
+use React\Dns\Query\CancellationException;
+use React\Tests\Dns\TestCase;
+use React\EventLoop\Factory;
+use React\Promise;
+
+class TimeoutExecutorTest extends TestCase
+{
+    public function setUp()
+    {
+        $this->loop = Factory::create();
+
+        $this->wrapped = $this->getMockBuilder('React\Dns\Query\ExecutorInterface')->getMock();
+
+        $this->executor = new TimeoutExecutor($this->wrapped, 5.0, $this->loop);
+    }
+
+    public function testCancellingPromiseWillCancelWrapped()
+    {
+        $cancelled = 0;
+
+        $this->wrapped
+            ->expects($this->once())
+            ->method('query')
+            ->will($this->returnCallback(function ($domain, $query) use (&$cancelled) {
+                $deferred = new Deferred(function ($resolve, $reject) use (&$cancelled) {
+                    ++$cancelled;
+                    $reject(new CancellationException('Cancelled'));
+                });
+
+                return $deferred->promise();
+            }));
+
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+        $promise = $this->executor->query('8.8.8.8:53', $query);
+
+        $this->assertEquals(0, $cancelled);
+        $promise->cancel();
+        $this->assertEquals(1, $cancelled);
+
+        $promise->then($this->expectCallableNever(), $this->expectCallableOnce());
+    }
+
+    public function testResolvesPromiseWhenWrappedResolves()
+    {
+        $this->wrapped
+            ->expects($this->once())
+            ->method('query')
+            ->willReturn(Promise\resolve('0.0.0.0'));
+
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+        $promise = $this->executor->query('8.8.8.8:53', $query);
+
+        $promise->then($this->expectCallableOnce(), $this->expectCallableNever());
+    }
+
+    public function testRejectsPromiseWhenWrappedRejects()
+    {
+        $this->wrapped
+            ->expects($this->once())
+            ->method('query')
+            ->willReturn(Promise\reject(new \RuntimeException()));
+
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+        $promise = $this->executor->query('8.8.8.8:53', $query);
+
+        $promise->then($this->expectCallableNever(), $this->expectCallableOnceWith(new \RuntimeException()));
+    }
+
+    public function testWrappedWillBeCancelledOnTimeout()
+    {
+        $this->executor = new TimeoutExecutor($this->wrapped, 0, $this->loop);
+
+        $cancelled = 0;
+
+        $this->wrapped
+            ->expects($this->once())
+            ->method('query')
+            ->will($this->returnCallback(function ($domain, $query) use (&$cancelled) {
+                $deferred = new Deferred(function ($resolve, $reject) use (&$cancelled) {
+                    ++$cancelled;
+                    $reject(new CancellationException('Cancelled'));
+                });
+
+                return $deferred->promise();
+            }));
+
+        $callback = $this->expectCallableNever();
+
+        $errorback = $this->createCallableMock();
+        $errorback
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->logicalAnd(
+                $this->isInstanceOf('React\Dns\Query\TimeoutException'),
+                $this->attribute($this->equalTo('DNS query for igor.io timed out'), 'message')
+            ));
+
+        $query = new Query('igor.io', Message::TYPE_A, Message::CLASS_IN, 1345656451);
+        $this->executor->query('8.8.8.8:53', $query)->then($callback, $errorback);
+
+        $this->assertEquals(0, $cancelled);
+
+        $this->loop->run();
+
+        $this->assertEquals(1, $cancelled);
+    }
+}
diff --git a/assets/php/vendor/react/dns/tests/Resolver/FactoryTest.php b/assets/php/vendor/react/dns/tests/Resolver/FactoryTest.php
new file mode 100644
index 0000000..acaeac0
--- /dev/null
+++ b/assets/php/vendor/react/dns/tests/Resolver/FactoryTest.php
@@ -0,0 +1,131 @@
+<?php
+
+namespace React\Tests\Dns\Resolver;
+
+use React\Dns\Resolver\Factory;
+use React\Tests\Dns\TestCase;
+use React\Dns\Query\HostsFileExecutor;
+
+class FactoryTest extends TestCase
+{
+    /** @test */
+    public function createShouldCreateResolver()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $factory = new Factory();
+        $resolver = $factory->create('8.8.8.8:53', $loop);
+
+        $this->assertInstanceOf('React\Dns\Resolver\Resolver', $resolver);
+    }
+
+    /** @test */
+    public function createWithoutPortShouldCreateResolverWithDefaultPort()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $factory = new Factory();
+        $resolver = $factory->create('8.8.8.8', $loop);
+
+        $this->assertInstanceOf('React\Dns\Resolver\Resolver', $resolver);
+        $this->assertSame('8.8.8.8:53', $this->getResolverPrivateMemberValue($resolver, 'nameserver'));
+    }
+
+    /** @test */
+    public function createCachedShouldCreateResolverWithCachedExecutor()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $factory = new Factory();
+        $resolver = $factory->createCached('8.8.8.8:53', $loop);
+
+        $this->assertInstanceOf('React\Dns\Resolver\Resolver', $resolver);
+        $executor = $this->getResolverPrivateExecutor($resolver);
+        $this->assertInstanceOf('React\Dns\Query\CachedExecutor', $executor);
+        $recordCache = $this->getCachedExecutorPrivateMemberValue($executor, 'cache');
+        $recordCacheCache = $this->getRecordCachePrivateMemberValue($recordCache, 'cache');
+        $this->assertInstanceOf('React\Cache\CacheInterface', $recordCacheCache);
+        $this->assertInstanceOf('React\Cache\ArrayCache', $recordCacheCache);
+    }
+
+    /** @test */
+    public function createCachedShouldCreateResolverWithCachedExecutorWithCustomCache()
+    {
+        $cache = $this->getMockBuilder('React\Cache\CacheInterface')->getMock();
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $factory = new Factory();
+        $resolver = $factory->createCached('8.8.8.8:53', $loop, $cache);
+
+        $this->assertInstanceOf('React\Dns\Resolver\Resolver', $resolver);
+        $executor = $this->getResolverPrivateExecutor($resolver);
+        $this->assertInstanceOf('React\Dns\Query\CachedExecutor', $executor);
+        $recordCache = $this->getCachedExecutorPrivateMemberValue($executor, 'cache');
+        $recordCacheCache = $this->getRecordCachePrivateMemberValue($recordCache, 'cache');
+        $this->assertInstanceOf('React\Cache\CacheInterface', $recordCacheCache);
+        $this->assertSame($cache, $recordCacheCache);
+    }
+
+    /**
+     * @test
+     * @dataProvider factoryShouldAddDefaultPortProvider
+     */
+    public function factoryShouldAddDefaultPort($input, $expected)
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $factory = new Factory();
+        $resolver = $factory->create($input, $loop);
+
+        $this->assertInstanceOf('React\Dns\Resolver\Resolver', $resolver);
+        $this->assertSame($expected, $this->getResolverPrivateMemberValue($resolver, 'nameserver'));
+    }
+
+    public static function factoryShouldAddDefaultPortProvider()
+    {
+        return array(
+            array('8.8.8.8',        '8.8.8.8:53'),
+            array('1.2.3.4:5',      '1.2.3.4:5'),
+            array('localhost',      'localhost:53'),
+            array('localhost:1234', 'localhost:1234'),
+            array('::1',            '[::1]:53'),
+            array('[::1]:53',       '[::1]:53')
+        );
+    }
+
+    private function getResolverPrivateExecutor($resolver)
+    {
+        $executor = $this->getResolverPrivateMemberValue($resolver, 'executor');
+
+        // extract underlying executor that may be wrapped in multiple layers of hosts file executors
+        while ($executor instanceof HostsFileExecutor) {
+            $reflector = new \ReflectionProperty('React\Dns\Query\HostsFileExecutor', 'fallback');
+            $reflector->setAccessible(true);
+
+            $executor = $reflector->getValue($executor);
+        }
+
+        return $executor;
+    }
+
+    private function getResolverPrivateMemberValue($resolver, $field)
+    {
+        $reflector = new \ReflectionProperty('React\Dns\Resolver\Resolver', $field);
+        $reflector->setAccessible(true);
+        return $reflector->getValue($resolver);
+    }
+
+    private function getCachedExecutorPrivateMemberValue($resolver, $field)
+    {
+        $reflector = new \ReflectionProperty('React\Dns\Query\CachedExecutor', $field);
+        $reflector->setAccessible(true);
+        return $reflector->getValue($resolver);
+    }
+
+    private function getRecordCachePrivateMemberValue($resolver, $field)
+    {
+        $reflector = new \ReflectionProperty('React\Dns\Query\RecordCache', $field);
+        $reflector->setAccessible(true);
+        return $reflector->getValue($resolver);
+    }
+}
diff --git a/assets/php/vendor/react/dns/tests/Resolver/ResolveAliasesTest.php b/assets/php/vendor/react/dns/tests/Resolver/ResolveAliasesTest.php
new file mode 100644
index 0000000..b5175e3
--- /dev/null
+++ b/assets/php/vendor/react/dns/tests/Resolver/ResolveAliasesTest.php
@@ -0,0 +1,100 @@
+<?php
+
+namespace React\Tests\Dns\Resolver;
+
+use PHPUnit\Framework\TestCase;
+use React\Dns\Resolver\Resolver;
+use React\Dns\Query\Query;
+use React\Dns\Model\Message;
+use React\Dns\Model\Record;
+
+class ResolveAliasesTest extends TestCase
+{
+    /**
+     * @covers React\Dns\Resolver\Resolver::resolveAliases
+     * @dataProvider provideAliasedAnswers
+     */
+    public function testResolveAliases(array $expectedAnswers, array $answers, $name)
+    {
+        $executor = $this->createExecutorMock();
+        $resolver = new Resolver('8.8.8.8:53', $executor);
+
+        $answers = $resolver->resolveAliases($answers, $name);
+
+        $this->assertEquals($expectedAnswers, $answers);
+    }
+
+    public function provideAliasedAnswers()
+    {
+        return array(
+            array(
+                array('178.79.169.131'),
+                array(
+                    new Record('igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.131'),
+                ),
+                'igor.io',
+            ),
+            array(
+                array('178.79.169.131', '178.79.169.132', '178.79.169.133'),
+                array(
+                    new Record('igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.131'),
+                    new Record('igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.132'),
+                    new Record('igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.133'),
+                ),
+                'igor.io',
+            ),
+            array(
+                array('178.79.169.131'),
+                array(
+                    new Record('igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.131'),
+                    new Record('foo.igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.131'),
+                    new Record('bar.igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.131'),
+                ),
+                'igor.io',
+            ),
+            array(
+                array(),
+                array(
+                    new Record('foo.igor.io', Message::TYPE_A, Message::CLASS_IN),
+                    new Record('bar.igor.io', Message::TYPE_A, Message::CLASS_IN),
+                ),
+                'igor.io',
+            ),
+            array(
+                array('178.79.169.131'),
+                array(
+                    new Record('igor.io', Message::TYPE_CNAME, Message::CLASS_IN, 3600, 'foo.igor.io'),
+                    new Record('foo.igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.131'),
+                ),
+                'igor.io',
+            ),
+            array(
+                array('178.79.169.131'),
+                array(
+                    new Record('igor.io', Message::TYPE_CNAME, Message::CLASS_IN, 3600, 'foo.igor.io'),
+                    new Record('foo.igor.io', Message::TYPE_CNAME, Message::CLASS_IN, 3600, 'bar.igor.io'),
+                    new Record('bar.igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.131'),
+                ),
+                'igor.io',
+            ),
+            array(
+                array('178.79.169.131', '178.79.169.132', '178.79.169.133'),
+                array(
+                    new Record('igor.io', Message::TYPE_CNAME, Message::CLASS_IN, 3600, 'foo.igor.io'),
+                    new Record('foo.igor.io', Message::TYPE_CNAME, Message::CLASS_IN, 3600, 'bar.igor.io'),
+                    new Record('bar.igor.io', Message::TYPE_CNAME, Message::CLASS_IN, 3600, 'baz.igor.io'),
+                    new Record('bar.igor.io', Message::TYPE_CNAME, Message::CLASS_IN, 3600, 'qux.igor.io'),
+                    new Record('baz.igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.131'),
+                    new Record('baz.igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.132'),
+                    new Record('qux.igor.io', Message::TYPE_A, Message::CLASS_IN, 3600, '178.79.169.133'),
+                ),
+                'igor.io',
+            ),
+        );
+    }
+
+    private function createExecutorMock()
+    {
+        return $this->getMockBuilder('React\Dns\Query\ExecutorInterface')->getMock();
+    }
+}
diff --git a/assets/php/vendor/react/dns/tests/Resolver/ResolverTest.php b/assets/php/vendor/react/dns/tests/Resolver/ResolverTest.php
new file mode 100644
index 0000000..e11509b
--- /dev/null
+++ b/assets/php/vendor/react/dns/tests/Resolver/ResolverTest.php
@@ -0,0 +1,129 @@
+<?php
+
+namespace React\Tests\Dns\Resolver;
+
+use React\Dns\Resolver\Resolver;
+use React\Dns\Query\Query;
+use React\Dns\Model\Message;
+use React\Dns\Model\Record;
+use React\Promise;
+use React\Tests\Dns\TestCase;
+
+class ResolverTest extends TestCase
+{
+    /** @test */
+    public function resolveShouldQueryARecords()
+    {
+        $executor = $this->createExecutorMock();
+        $executor
+            ->expects($this->once())
+            ->method('query')
+            ->with($this->anything(), $this->isInstanceOf('React\Dns\Query\Query'))
+            ->will($this->returnCallback(function ($nameserver, $query) {
+                $response = new Message();
+                $response->header->set('qr', 1);
+                $response->questions[] = new Record($query->name, $query->type, $query->class);
+                $response->answers[] = new Record($query->name, $query->type, $query->class, 3600, '178.79.169.131');
+
+                return Promise\resolve($response);
+            }));
+
+        $resolver = new Resolver('8.8.8.8:53', $executor);
+        $resolver->resolve('igor.io')->then($this->expectCallableOnceWith('178.79.169.131'));
+    }
+
+    /** @test */
+    public function resolveShouldQueryARecordsAndIgnoreCase()
+    {
+        $executor = $this->createExecutorMock();
+        $executor
+            ->expects($this->once())
+            ->method('query')
+            ->with($this->anything(), $this->isInstanceOf('React\Dns\Query\Query'))
+            ->will($this->returnCallback(function ($nameserver, $query) {
+                $response = new Message();
+                $response->header->set('qr', 1);
+                $response->questions[] = new Record('Blog.wyrihaximus.net', $query->type, $query->class);
+                $response->answers[] = new Record('Blog.wyrihaximus.net', $query->type, $query->class, 3600, '178.79.169.131');
+
+                return Promise\resolve($response);
+            }));
+
+        $resolver = new Resolver('8.8.8.8:53', $executor);
+        $resolver->resolve('blog.wyrihaximus.net')->then($this->expectCallableOnceWith('178.79.169.131'));
+    }
+
+    /** @test */
+    public function resolveShouldFilterByName()
+    {
+        $executor = $this->createExecutorMock();
+        $executor
+            ->expects($this->once())
+            ->method('query')
+            ->with($this->anything(), $this->isInstanceOf('React\Dns\Query\Query'))
+            ->will($this->returnCallback(function ($nameserver, $query) {
+                $response = new Message();
+                $response->header->set('qr', 1);
+                $response->questions[] = new Record($query->name, $query->type, $query->class);
+                $response->answers[] = new Record('foo.bar', $query->type, $query->class, 3600, '178.79.169.131');
+
+                return Promise\resolve($response);
+            }));
+
+        $errback = $this->expectCallableOnceWith($this->isInstanceOf('React\Dns\RecordNotFoundException'));
+
+        $resolver = new Resolver('8.8.8.8:53', $executor);
+        $resolver->resolve('igor.io')->then($this->expectCallableNever(), $errback);
+    }
+
+    /** @test */
+    public function resolveWithNoAnswersShouldThrowException()
+    {
+        $executor = $this->createExecutorMock();
+        $executor
+            ->expects($this->once())
+            ->method('query')
+            ->with($this->anything(), $this->isInstanceOf('React\Dns\Query\Query'))
+            ->will($this->returnCallback(function ($nameserver, $query) {
+                $response = new Message();
+                $response->header->set('qr', 1);
+                $response->questions[] = new Record($query->name, $query->type, $query->class);
+
+                return Promise\resolve($response);
+            }));
+
+        $errback = $this->expectCallableOnceWith($this->isInstanceOf('React\Dns\RecordNotFoundException'));
+
+        $resolver = new Resolver('8.8.8.8:53', $executor);
+        $resolver->resolve('igor.io')->then($this->expectCallableNever(), $errback);
+    }
+
+    /**
+     * @test
+     */
+    public function resolveWithNoAnswersShouldCallErrbackIfGiven()
+    {
+        $executor = $this->createExecutorMock();
+        $executor
+            ->expects($this->once())
+            ->method('query')
+            ->with($this->anything(), $this->isInstanceOf('React\Dns\Query\Query'))
+            ->will($this->returnCallback(function ($nameserver, $query) {
+                $response = new Message();
+                $response->header->set('qr', 1);
+                $response->questions[] = new Record($query->name, $query->type, $query->class);
+
+                return Promise\resolve($response);
+            }));
+
+        $errback = $this->expectCallableOnceWith($this->isInstanceOf('React\Dns\RecordNotFoundException'));
+
+        $resolver = new Resolver('8.8.8.8:53', $executor);
+        $resolver->resolve('igor.io')->then($this->expectCallableNever(), $errback);
+    }
+
+    private function createExecutorMock()
+    {
+        return $this->getMockBuilder('React\Dns\Query\ExecutorInterface')->getMock();
+    }
+}
diff --git a/assets/php/vendor/react/dns/tests/TestCase.php b/assets/php/vendor/react/dns/tests/TestCase.php
new file mode 100644
index 0000000..a5a22bf
--- /dev/null
+++ b/assets/php/vendor/react/dns/tests/TestCase.php
@@ -0,0 +1,61 @@
+<?php
+
+namespace React\Tests\Dns;
+
+use PHPUnit\Framework\TestCase as BaseTestCase;
+
+abstract class TestCase extends BaseTestCase
+{
+    protected function expectCallableOnce()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    protected function expectCallableOnceWith($value)
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($value);
+
+        return $mock;
+    }
+
+    protected function expectCallableNever()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->never())
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    protected function createCallableMock()
+    {
+        return $this->getMockBuilder('React\Tests\Dns\CallableStub')->getMock();
+    }
+
+    public function setExpectedException($exception, $exceptionMessage = '', $exceptionCode = null)
+    {
+         if (method_exists($this, 'expectException')) {
+             // PHPUnit 5
+             $this->expectException($exception);
+             if ($exceptionMessage !== '') {
+                 $this->expectExceptionMessage($exceptionMessage);
+             }
+             if ($exceptionCode !== null) {
+                 $this->expectExceptionCode($exceptionCode);
+             }
+         } else {
+             // legacy PHPUnit 4
+             parent::setExpectedException($exception, $exceptionMessage, $exceptionCode);
+         }
+     }
+}
diff --git a/assets/php/vendor/react/event-loop/.gitignore b/assets/php/vendor/react/event-loop/.gitignore
new file mode 100644
index 0000000..81b9258
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/.gitignore
@@ -0,0 +1,3 @@
+composer.lock
+phpunit.xml
+vendor
diff --git a/assets/php/vendor/react/event-loop/.travis.yml b/assets/php/vendor/react/event-loop/.travis.yml
new file mode 100644
index 0000000..7af713a
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/.travis.yml
@@ -0,0 +1,39 @@
+language: php
+
+php:
+# - 5.3 # requires old distro, see below
+  - 5.4
+  - 5.5
+  - 5.6
+  - 7.0
+  - 7.1
+  - 7.2
+  - hhvm # ignore errors, see below
+
+# lock distro so new future defaults will not break the build
+dist: trusty
+
+matrix:
+  include:
+    - php: 5.3
+      dist: precise
+  allow_failures:
+    - php: hhvm
+
+sudo: false
+
+addons:
+  apt:
+    packages:
+      - libevent-dev # Used by 'event' and 'libevent' PHP extensions
+
+cache:
+  directories:
+    - $HOME/.composer/cache/files
+
+install:
+  - ./travis-init.sh
+  - composer install
+
+script:
+  - ./vendor/bin/phpunit --coverage-text
diff --git a/assets/php/vendor/react/event-loop/CHANGELOG.md b/assets/php/vendor/react/event-loop/CHANGELOG.md
new file mode 100644
index 0000000..c291840
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/CHANGELOG.md
@@ -0,0 +1,316 @@
+# Changelog
+
+## 0.5.1 (2018-04-09)
+
+* New loop: ExtEvLoop (PECL ext-ev)  (#148 by @kaduev13)
+
+## 0.5.0 (2018-04-05)
+
+A major feature release with a significant documentation overhaul and long overdue API cleanup!
+
+This update involves a number of BC breaks due to dropped support for deprecated
+functionality. We've tried hard to avoid BC breaks where possible and minimize
+impact otherwise. We expect that most consumers of this package will actually
+not be affected by any BC breaks, see below for more details.
+
+We realize that the changes listed below may seem overwhelming, but we've tried
+to be very clear about any possible BC breaks. Don't worry: In fact, all ReactPHP
+components are already compatible and support both this new release as well as
+providing backwards compatibility with the last release.
+
+*   Feature / BC break: Add support for signal handling via new
+    `LoopInterface::addSignal()` and `LoopInterface::removeSignal()` methods.
+    (#104 by @WyriHaximus and #111 and #150 by @clue)
+
+    ```php
+    $loop->addSignal(SIGINT, function () {
+        echo 'CTRL-C';
+    });
+    ```
+
+*   Feature: Significant documentation updates for `LoopInterface` and `Factory`.
+    (#100, #119, #126, #127, #159 and #160 by @clue, #113 by @WyriHaximus and #81 and #91 by @jsor)
+
+*   Feature: Add examples to ease getting started
+    (#99, #100 and #125 by @clue, #59 by @WyriHaximus and #143 by @jsor)
+
+*   Feature: Documentation for advanced timer concepts, such as monotonic time source vs wall-clock time
+    and high precision timers with millisecond accuracy or below.
+    (#130 and #157 by @clue)
+
+*   Feature: Documentation for advanced stream concepts, such as edge-triggered event listeners
+    and stream buffers and allow throwing Exception if stream resource is not supported.
+    (#129 and #158 by @clue)
+
+*   Feature: Throw `BadMethodCallException` on manual loop creation when required extension isn't installed.
+    (#153 by @WyriHaximus)
+
+*   Feature / BC break: First class support for legacy PHP 5.3 through PHP 7.2 and HHVM
+    and remove all `callable` type hints for consistency reasons.
+    (#141 and #151 by @clue)
+
+*   BC break: Documentation for timer API and clean up unneeded timer API.
+    (#102 by @clue)
+
+    Remove `TimerInterface::cancel()`, use `LoopInterface::cancelTimer()` instead:
+
+    ```php
+    // old (method invoked on timer instance)
+    $timer->cancel();
+    
+    // already supported before: invoke method on loop instance
+    $loop->cancelTimer($timer);
+    ```
+
+    Remove unneeded `TimerInterface::setData()` and `TimerInterface::getData()`,
+    use closure binding to add arbitrary data to timer instead:
+
+    ```php
+    // old (limited setData() and getData() only allows single variable)
+    $name = 'Tester';
+    $timer = $loop->addTimer(1.0, function ($timer) {
+        echo 'Hello ' . $timer->getData() . PHP_EOL;
+    });
+    $timer->setData($name);
+
+    // already supported before: closure binding allows any number of variables
+    $name = 'Tester';
+    $loop->addTimer(1.0, function () use ($name) {
+        echo 'Hello ' . $name . PHP_EOL;
+    });
+    ```
+
+    Remove unneeded `TimerInterface::getLoop()`, use closure binding instead:
+
+    ```php
+    // old (getLoop() called on timer instance)
+    $loop->addTimer(0.1, function ($timer) {
+        $timer->getLoop()->stop();
+    });
+
+    // already supported before: use closure binding as usual
+    $loop->addTimer(0.1, function () use ($loop) {
+        $loop->stop();
+    });
+    ```
+
+*   BC break: Remove unneeded `LoopInterface::isTimerActive()` and
+    `TimerInterface::isActive()` to reduce API surface.
+    (#133 by @clue)
+
+    ```php
+    // old (method on timer instance or on loop instance)
+    $timer->isActive();
+    $loop->isTimerActive($timer);
+    ```
+
+*   BC break: Move `TimerInterface` one level up to `React\EventLoop\TimerInterface`.
+    (#138 by @WyriHaximus)
+
+    ```php
+    // old (notice obsolete "Timer" namespace)
+    assert($timer instanceof React\EventLoop\Timer\TimerInterface);
+
+    // new
+    assert($timer instanceof React\EventLoop\TimerInterface);
+    ```
+
+*   BC break: Remove unneeded `LoopInterface::nextTick()` (and internal `NextTickQueue`),
+    use `LoopInterface::futureTick()` instead.
+    (#30 by @clue)
+
+    ```php
+    // old (removed)
+    $loop->nextTick(function () {
+        echo 'tick';
+    });
+
+    // already supported before
+    $loop->futureTick(function () {
+        echo 'tick';
+    });
+    ```
+
+*   BC break: Remove unneeded `$loop` argument for `LoopInterface::futureTick()`
+    (and fix internal cyclic dependency).
+    (#103 by @clue)
+
+    ```php
+    // old ($loop gets passed by default)
+    $loop->futureTick(function ($loop) {
+        $loop->stop();
+    });
+
+    // already supported before: use closure binding as usual
+    $loop->futureTick(function () use ($loop) {
+        $loop->stop();
+    });
+    ```
+
+*   BC break: Remove unneeded `LoopInterface::tick()`.
+    (#72 by @jsor)
+
+    ```php
+    // old (removed)
+    $loop->tick();
+
+    // suggested work around for testing purposes only
+    $loop->futureTick(function () use ($loop) {
+        $loop->stop();
+    });
+    ```
+
+*   BC break: Documentation for advanced stream API and clean up unneeded stream API.
+    (#110 by @clue)
+
+    Remove unneeded `$loop` argument for `LoopInterface::addReadStream()`
+    and `LoopInterface::addWriteStream()`, use closure binding instead:
+
+    ```php
+    // old ($loop gets passed by default)
+    $loop->addReadStream($stream, function ($stream, $loop) {
+        $loop->removeReadStream($stream);
+    });
+
+    // already supported before: use closure binding as usual
+    $loop->addReadStream($stream, function ($stream) use ($loop) {
+        $loop->removeReadStream($stream);
+    });
+    ```
+
+*   BC break: Remove unneeded `LoopInterface::removeStream()` method,
+    use `LoopInterface::removeReadStream()` and `LoopInterface::removeWriteStream()` instead.
+    (#118 by @clue)
+
+    ```php
+    // old
+    $loop->removeStream($stream);
+
+    // already supported before
+    $loop->removeReadStream($stream);
+    $loop->removeWriteStream($stream);
+    ```
+
+*   BC break: Rename `LibEventLoop` to `ExtLibeventLoop` and `LibEvLoop` to `ExtLibevLoop`
+    for consistent naming for event loop implementations.
+    (#128 by @clue)
+
+*   BC break: Remove optional `EventBaseConfig` argument from `ExtEventLoop`
+    and make its `FEATURE_FDS` enabled by default.
+    (#156 by @WyriHaximus)
+
+*   BC break: Mark all classes as final to discourage inheritance.
+    (#131 by @clue)
+
+*   Fix: Fix `ExtEventLoop` to keep track of stream resources (refcount)
+    (#123 by @clue)
+
+*   Fix: Ensure large timer interval does not overflow on 32bit systems
+    (#132 by @clue)
+
+*   Fix: Fix separately removing readable and writable side of stream when closing
+    (#139 by @clue)
+
+*   Fix: Properly clean up event watchers for `ext-event` and `ext-libev`
+    (#149 by @clue)
+
+*   Fix: Minor code cleanup and remove unneeded references
+    (#145 by @seregazhuk)
+
+*   Fix: Discourage outdated `ext-libevent` on PHP 7
+    (#62 by @cboden)
+
+*   Improve test suite by adding forward compatibility with PHPUnit 6 and PHPUnit 5,
+    lock Travis distro so new defaults will not break the build,
+    improve test suite to be less fragile and increase test timeouts,
+    test against PHP 7.2 and reduce fwrite() call length to one chunk.
+    (#106 and #144 by @clue, #120 and #124 by @carusogabriel, #147 by nawarian and #92 by @kelunik)
+
+*   A number of changes were originally planned for this release but have been backported
+    to the last `v0.4.3` already: #74, #76, #79, #81 (refs #65, #66, #67), #88 and #93
+
+## 0.4.3 (2017-04-27)
+
+* Bug fix: Bugfix in the usage sample code #57 (@dandelionred) 
+* Improvement: Remove branch-alias definition #53 (@WyriHaximus)
+* Improvement: StreamSelectLoop: Use fresh time so Timers added during stream events are accurate #51 (@andrewminerd)
+* Improvement: Avoid deprecation warnings in test suite due to deprecation of getMock() in PHPUnit #68 (@martinschroeder)
+* Improvement: Add PHPUnit 4.8 to require-dev #69 (@shaunbramley)
+* Improvement: Increase test timeouts for HHVM and unify timeout handling #70 (@clue)
+* Improvement: Travis improvements (backported from #74) #75 (@clue)
+* Improvement: Test suite now uses socket pairs instead of memory streams #66 (@martinschroeder)
+* Improvement: StreamSelectLoop: Test suite uses signal constant names in data provider #67 (@martinschroeder)
+* Improvement: ExtEventLoop: No longer suppress all errors #65 (@mamciek)
+* Improvement: Readme cleanup #89 (@jsor)
+* Improvement: Restructure and improve README #90 (@jsor)
+* Bug fix: StreamSelectLoop: Fix erroneous zero-time sleep (backport to 0.4) #94 (@jsor)
+
+## 0.4.2 (2016-03-07)
+
+* Bug fix: No longer error when signals sent to StreamSelectLoop
+* Support HHVM and PHP7 (@ondrejmirtes, @cebe)
+* Feature: Added support for EventConfig for ExtEventLoop (@steverhoades)
+* Bug fix: Fixed an issue loading loop extension libs via autoloader (@czarpino)
+
+## 0.4.1 (2014-04-13)
+
+* Bug fix: null timeout in StreamSelectLoop causing 100% CPU usage (@clue)
+* Bug fix: v0.3.4 changes merged for v0.4.1
+
+## 0.4.0 (2014-02-02)
+
+* Feature: Added `EventLoopInterface::nextTick()`, implemented in all event loops (@jmalloc)
+* Feature: Added `EventLoopInterface::futureTick()`, implemented in all event loops (@jmalloc)
+* Feature: Added `ExtEventLoop` implementation using pecl/event (@jmalloc)
+* BC break: Bump minimum PHP version to PHP 5.4, remove 5.3 specific hacks
+* BC break: New method: `EventLoopInterface::nextTick()`
+* BC break: New method: `EventLoopInterface::futureTick()`
+* Dependency: Autoloading and filesystem structure now PSR-4 instead of PSR-0
+
+## 0.3.5 (2016-12-28)
+
+This is a compatibility release that eases upgrading to the v0.4 release branch.
+You should consider upgrading to the v0.4 release branch.
+
+* Feature: Cap min timer interval at 1µs, thus improving compatibility with v0.4
+  (#47 by @clue)
+
+## 0.3.4 (2014-03-30)
+
+* Bug fix: Changed StreamSelectLoop to use non-blocking behavior on tick() (@astephens25)
+
+## 0.3.3 (2013-07-08)
+
+* Bug fix: No error on removing non-existent streams (@clue)
+* Bug fix: Do not silently remove feof listeners in `LibEvLoop`
+
+## 0.3.0 (2013-04-14)
+
+* BC break: New timers API (@nrk)
+* BC break: Remove check on return value from stream callbacks (@nrk)
+
+## 0.2.7 (2013-01-05)
+
+* Bug fix: Fix libevent timers with PHP 5.3
+* Bug fix: Fix libevent timer cancellation (@nrk)
+
+## 0.2.6 (2012-12-26)
+
+* Bug fix: Plug memory issue in libevent timers (@cameronjacobson)
+* Bug fix: Correctly pause LibEvLoop on stop()
+
+## 0.2.3 (2012-11-14)
+
+* Feature: LibEvLoop, integration of `php-libev`
+
+## 0.2.0 (2012-09-10)
+
+* Version bump
+
+## 0.1.1 (2012-07-12)
+
+* Version bump
+
+## 0.1.0 (2012-07-11)
+
+* First tagged release
diff --git a/assets/php/vendor/react/event-loop/LICENSE b/assets/php/vendor/react/event-loop/LICENSE
new file mode 100644
index 0000000..a808108
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/LICENSE
@@ -0,0 +1,19 @@
+Copyright (c) 2012 Igor Wiedler, Chris Boden
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/assets/php/vendor/react/event-loop/README.md b/assets/php/vendor/react/event-loop/README.md
new file mode 100644
index 0000000..207e7f4
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/README.md
@@ -0,0 +1,702 @@
+# EventLoop Component
+
+[![Build Status](https://travis-ci.org/reactphp/event-loop.svg?branch=master)](https://travis-ci.org/reactphp/event-loop)
+
+[ReactPHP](https://reactphp.org/)'s core reactor event loop that libraries can use for evented I/O.
+
+In order for async based libraries to be interoperable, they need to use the
+same event loop. This component provides a common `LoopInterface` that any
+library can target. This allows them to be used in the same loop, with one
+single [`run()`](#run) call that is controlled by the user.
+
+**Table of Contents**
+
+* [Quickstart example](#quickstart-example)
+* [Usage](#usage)
+  * [Factory](#factory)
+    * [create()](#create)
+  * [Loop implementations](#loop-implementations)
+    * [StreamSelectLoop](#streamselectloop)
+    * [ExtEventLoop](#exteventloop)
+    * [ExtLibeventLoop](#extlibeventloop)
+    * [ExtLibevLoop](#extlibevloop)
+    * [ExtEvLoop](#extevloop)
+  * [LoopInterface](#loopinterface)
+    * [run()](#run)
+    * [stop()](#stop)
+    * [addTimer()](#addtimer)
+    * [addPeriodicTimer()](#addperiodictimer)
+    * [cancelTimer()](#canceltimer)
+    * [futureTick()](#futuretick)
+    * [addSignal()](#addsignal)
+    * [removeSignal()](#removesignal)
+    * [addReadStream()](#addreadstream)
+    * [addWriteStream()](#addwritestream)
+    * [removeReadStream()](#removereadstream)
+    * [removeWriteStream()](#removewritestream)
+* [Install](#install)
+* [Tests](#tests)
+* [License](#license)
+* [More](#more)
+
+## Quickstart example
+
+Here is an async HTTP server built with just the event loop.
+
+```php
+$loop = React\EventLoop\Factory::create();
+
+$server = stream_socket_server('tcp://127.0.0.1:8080');
+stream_set_blocking($server, false);
+
+$loop->addReadStream($server, function ($server) use ($loop) {
+    $conn = stream_socket_accept($server);
+    $data = "HTTP/1.1 200 OK\r\nContent-Length: 3\r\n\r\nHi\n";
+    $loop->addWriteStream($conn, function ($conn) use (&$data, $loop) {
+        $written = fwrite($conn, $data);
+        if ($written === strlen($data)) {
+            fclose($conn);
+            $loop->removeWriteStream($conn);
+        } else {
+            $data = substr($data, $written);
+        }
+    });
+});
+
+$loop->addPeriodicTimer(5, function () {
+    $memory = memory_get_usage() / 1024;
+    $formatted = number_format($memory, 3).'K';
+    echo "Current memory usage: {$formatted}\n";
+});
+
+$loop->run();
+```
+
+See also the [examples](examples).
+
+## Usage
+
+Typical applications use a single event loop which is created at the beginning
+and run at the end of the program.
+
+```php
+// [1]
+$loop = React\EventLoop\Factory::create();
+
+// [2]
+$loop->addPeriodicTimer(1, function () {
+    echo "Tick\n";
+});
+
+$stream = new React\Stream\ReadableResourceStream(
+    fopen('file.txt', 'r'),
+    $loop
+);
+
+// [3]
+$loop->run();
+```
+
+1. The loop instance is created at the beginning of the program. A convenience
+   factory [`React\EventLoop\Factory::create()`](#create) is provided by this library which
+   picks the best available [loop implementation](#loop-implementations).
+2. The loop instance is used directly or passed to library and application code.
+   In this example, a periodic timer is registered with the event loop which
+   simply outputs `Tick` every second and a
+   [readable stream](https://github.com/reactphp/stream#readableresourcestream)
+   is created by using ReactPHP's
+   [stream component](https://github.com/reactphp/stream) for demonstration
+   purposes.
+3. The loop is run with a single [`$loop->run()`](#run) call at the end of the program.
+
+### Factory
+
+The `Factory` class exists as a convenient way to pick the best available
+[event loop implementation](#loop-implementations).
+
+#### create()
+
+The `create(): LoopInterface` method can be used to create a new event loop
+instance:
+
+```php
+$loop = React\EventLoop\Factory::create();
+```
+
+This method always returns an instance implementing [`LoopInterface`](#loopinterface),
+the actual [event loop implementation](#loop-implementations) is an implementation detail.
+
+This method should usually only be called once at the beginning of the program.
+
+### Loop implementations
+
+In addition to the [`LoopInterface`](#loopinterface), there are a number of
+event loop implementations provided.
+
+All of the event loops support these features:
+
+* File descriptor polling
+* One-off timers
+* Periodic timers
+* Deferred execution on future loop tick
+
+For most consumers of this package, the underlying event loop implementation is
+an implementation detail.
+You should use the [`Factory`](#factory) to automatically create a new instance.
+
+Advanced! If you explicitly need a certain event loop implementation, you can
+manually instantiate one of the following classes.
+Note that you may have to install the required PHP extensions for the respective
+event loop implementation first or they will throw a `BadMethodCallException` on creation.
+
+#### StreamSelectLoop
+
+A `stream_select()` based event loop.
+
+This uses the [`stream_select()`](http://php.net/manual/en/function.stream-select.php)
+function and is the only implementation which works out of the box with PHP.
+
+This event loop works out of the box on PHP 5.3 through PHP 7+ and HHVM.
+This means that no installation is required and this library works on all
+platforms and supported PHP versions.
+Accordingly, the [`Factory`](#factory) will use this event loop by default if
+you do not install any of the event loop extensions listed below.
+
+Under the hood, it does a simple `select` system call.
+This system call is limited to the maximum file descriptor number of
+`FD_SETSIZE` (platform dependent, commonly 1024) and scales with `O(m)`
+(`m` being the maximum file descriptor number passed).
+This means that you may run into issues when handling thousands of streams
+concurrently and you may want to look into using one of the alternative
+event loop implementations listed below in this case.
+If your use case is among the many common use cases that involve handling only
+dozens or a few hundred streams at once, then this event loop implementation
+performs really well.
+
+If you want to use signal handling (see also [`addSignal()`](#addsignal) below),
+this event loop implementation requires `ext-pcntl`.
+This extension is only available for Unix-like platforms and does not support
+Windows.
+It is commonly installed as part of many PHP distributions.
+If this extension is missing (or you're running on Windows), signal handling is
+not supported and throws a `BadMethodCallException` instead.
+
+This event loop is known to rely on wall-clock time to schedule future
+timers, because a monotonic time source is not available in PHP by default.
+While this does not affect many common use cases, this is an important
+distinction for programs that rely on a high time precision or on systems
+that are subject to discontinuous time adjustments (time jumps).
+This means that if you schedule a timer to trigger in 30s and then adjust
+your system time forward by 20s, the timer may trigger in 10s.
+See also [`addTimer()`](#addtimer) for more details.
+
+#### ExtEventLoop
+
+An `ext-event` based event loop.
+
+This uses the [`event` PECL extension](https://pecl.php.net/package/event).
+It supports the same backends as libevent.
+
+This loop is known to work with PHP 5.4 through PHP 7+.
+
+#### ExtEvLoop
+
+An `ext-ev` based event loop.
+
+This loop uses the [`ev` PECL extension](https://pecl.php.net/package/ev), that
+provides an interface to `libev` library.
+
+This loop is known to work with PHP 5.4 through PHP 7+.
+
+
+#### ExtLibeventLoop
+
+An `ext-libevent` based event loop.
+
+This uses the [`libevent` PECL extension](https://pecl.php.net/package/libevent).
+`libevent` itself supports a number of system-specific backends (epoll, kqueue).
+
+This event loop does only work with PHP 5.
+An [unofficial update](https://github.com/php/pecl-event-libevent/pull/2) for
+PHP 7 does exist, but it is known to cause regular crashes due to `SEGFAULT`s.
+To reiterate: Using this event loop on PHP 7 is not recommended.
+Accordingly, the [`Factory`](#factory) will not try to use this event loop on
+PHP 7.
+
+This event loop is known to trigger a readable listener only if
+the stream *becomes* readable (edge-triggered) and may not trigger if the
+stream has already been readable from the beginning.
+This also implies that a stream may not be recognized as readable when data
+is still left in PHP's internal stream buffers.
+As such, it's recommended to use `stream_set_read_buffer($stream, 0);`
+to disable PHP's internal read buffer in this case.
+See also [`addReadStream()`](#addreadstream) for more details.
+
+#### ExtLibevLoop
+
+An `ext-libev` based event loop.
+
+This uses an [unofficial `libev` extension](https://github.com/m4rw3r/php-libev).
+It supports the same backends as libevent.
+
+This loop does only work with PHP 5.
+An update for PHP 7 is [unlikely](https://github.com/m4rw3r/php-libev/issues/8)
+to happen any time soon.
+
+### LoopInterface
+
+#### run()
+
+The `run(): void` method can be used to
+run the event loop until there are no more tasks to perform.
+
+For many applications, this method is the only directly visible
+invocation on the event loop.
+As a rule of thumb, it is usally recommended to attach everything to the
+same loop instance and then run the loop once at the bottom end of the
+application.
+
+```php
+$loop->run();
+```
+
+This method will keep the loop running until there are no more tasks
+to perform. In other words: This method will block until the last
+timer, stream and/or signal has been removed.
+
+Likewise, it is imperative to ensure the application actually invokes
+this method once. Adding listeners to the loop and missing to actually
+run it will result in the application exiting without actually waiting
+for any of the attached listeners.
+
+This method MUST NOT be called while the loop is already running.
+This method MAY be called more than once after it has explicity been
+[`stop()`ped](#stop) or after it automatically stopped because it
+previously did no longer have anything to do.
+
+#### stop()
+
+The `stop(): void` method can be used to
+instruct a running event loop to stop.
+
+This method is considered advanced usage and should be used with care.
+As a rule of thumb, it is usually recommended to let the loop stop
+only automatically when it no longer has anything to do.
+
+This method can be used to explicitly instruct the event loop to stop:
+
+```php
+$loop->addTimer(3.0, function () use ($loop) {
+    $loop->stop();
+});
+```
+
+Calling this method on a loop instance that is not currently running or
+on a loop instance that has already been stopped has no effect.
+
+#### addTimer()
+
+The `addTimer(float $interval, callable $callback): TimerInterface` method can be used to
+enqueue a callback to be invoked once after the given interval.
+
+The timer callback function MUST be able to accept a single parameter,
+the timer instance as also returned by this method or you MAY use a
+function which has no parameters at all.
+
+The timer callback function MUST NOT throw an `Exception`.
+The return value of the timer callback function will be ignored and has
+no effect, so for performance reasons you're recommended to not return
+any excessive data structures.
+
+Unlike [`addPeriodicTimer()`](#addperiodictimer), this method will ensure
+the callback will be invoked only once after the given interval.
+You can invoke [`cancelTimer`](#canceltimer) to cancel a pending timer.
+
+```php
+$loop->addTimer(0.8, function () {
+    echo 'world!' . PHP_EOL;
+});
+
+$loop->addTimer(0.3, function () {
+    echo 'hello ';
+});
+```
+
+See also [example #1](examples).
+
+If you want to access any variables within your callback function, you
+can bind arbitrary data to a callback closure like this:
+
+```php
+function hello($name, LoopInterface $loop)
+{
+    $loop->addTimer(1.0, function () use ($name) {
+        echo "hello $name\n";
+    });
+}
+
+hello('Tester', $loop);
+```
+
+This interface does not enforce any particular timer resolution, so
+special care may have to be taken if you rely on very high precision with
+millisecond accuracy or below. Event loop implementations SHOULD work on
+a best effort basis and SHOULD provide at least millisecond accuracy
+unless otherwise noted. Many existing event loop implementations are
+known to provide microsecond accuracy, but it's generally not recommended
+to rely on this high precision.
+
+Similarly, the execution order of timers scheduled to execute at the
+same time (within its possible accuracy) is not guaranteed.
+
+This interface suggests that event loop implementations SHOULD use a
+monotonic time source if available. Given that a monotonic time source is
+not available on PHP by default, event loop implementations MAY fall back
+to using wall-clock time.
+While this does not affect many common use cases, this is an important
+distinction for programs that rely on a high time precision or on systems
+that are subject to discontinuous time adjustments (time jumps).
+This means that if you schedule a timer to trigger in 30s and then adjust
+your system time forward by 20s, the timer SHOULD still trigger in 30s.
+See also [event loop implementations](#loop-implementations) for more details.
+
+#### addPeriodicTimer()
+
+The `addPeriodicTimer(float $interval, callable $callback): TimerInterface` method can be used to
+enqueue a callback to be invoked repeatedly after the given interval.
+
+The timer callback function MUST be able to accept a single parameter,
+the timer instance as also returned by this method or you MAY use a
+function which has no parameters at all.
+
+The timer callback function MUST NOT throw an `Exception`.
+The return value of the timer callback function will be ignored and has
+no effect, so for performance reasons you're recommended to not return
+any excessive data structures.
+
+Unlike [`addTimer()`](#addtimer), this method will ensure the the
+callback will be invoked infinitely after the given interval or until you
+invoke [`cancelTimer`](#canceltimer).
+
+```php
+$timer = $loop->addPeriodicTimer(0.1, function () {
+    echo 'tick!' . PHP_EOL;
+});
+
+$loop->addTimer(1.0, function () use ($loop, $timer) {
+    $loop->cancelTimer($timer);
+    echo 'Done' . PHP_EOL;
+});
+```
+
+See also [example #2](examples).
+
+If you want to limit the number of executions, you can bind
+arbitrary data to a callback closure like this:
+
+```php
+function hello($name, LoopInterface $loop)
+{
+    $n = 3;
+    $loop->addPeriodicTimer(1.0, function ($timer) use ($name, $loop, &$n) {
+        if ($n > 0) {
+            --$n;
+            echo "hello $name\n";
+        } else {
+            $loop->cancelTimer($timer);
+        }
+    });
+}
+
+hello('Tester', $loop);
+```
+
+This interface does not enforce any particular timer resolution, so
+special care may have to be taken if you rely on very high precision with
+millisecond accuracy or below. Event loop implementations SHOULD work on
+a best effort basis and SHOULD provide at least millisecond accuracy
+unless otherwise noted. Many existing event loop implementations are
+known to provide microsecond accuracy, but it's generally not recommended
+to rely on this high precision.
+
+Similarly, the execution order of timers scheduled to execute at the
+same time (within its possible accuracy) is not guaranteed.
+
+This interface suggests that event loop implementations SHOULD use a
+monotonic time source if available. Given that a monotonic time source is
+not available on PHP by default, event loop implementations MAY fall back
+to using wall-clock time.
+While this does not affect many common use cases, this is an important
+distinction for programs that rely on a high time precision or on systems
+that are subject to discontinuous time adjustments (time jumps).
+This means that if you schedule a timer to trigger in 30s and then adjust
+your system time forward by 20s, the timer SHOULD still trigger in 30s.
+See also [event loop implementations](#loop-implementations) for more details.
+
+Additionally, periodic timers may be subject to timer drift due to
+re-scheduling after each invocation. As such, it's generally not
+recommended to rely on this for high precision intervals with millisecond
+accuracy or below.
+
+#### cancelTimer()
+
+The `cancelTimer(TimerInterface $timer): void` method can be used to
+cancel a pending timer.
+
+See also [`addPeriodicTimer()`](#addperiodictimer) and [example #2](examples).
+
+Calling this method on a timer instance that has not been added to this
+loop instance or on a timer that has already been cancelled has no effect.
+
+#### futureTick()
+
+The `futureTick(callable $listener): void` method can be used to
+schedule a callback to be invoked on a future tick of the event loop.
+
+This works very much similar to timers with an interval of zero seconds,
+but does not require the overhead of scheduling a timer queue.
+
+The tick callback function MUST be able to accept zero parameters.
+
+The tick callback function MUST NOT throw an `Exception`.
+The return value of the tick callback function will be ignored and has
+no effect, so for performance reasons you're recommended to not return
+any excessive data structures.
+
+If you want to access any variables within your callback function, you
+can bind arbitrary data to a callback closure like this:
+
+```php
+function hello($name, LoopInterface $loop)
+{
+    $loop->futureTick(function () use ($name) {
+        echo "hello $name\n";
+    });
+}
+
+hello('Tester', $loop);
+```
+
+Unlike timers, tick callbacks are guaranteed to be executed in the order
+they are enqueued.
+Also, once a callback is enqueued, there's no way to cancel this operation.
+
+This is often used to break down bigger tasks into smaller steps (a form
+of cooperative multitasking).
+
+```php
+$loop->futureTick(function () {
+    echo 'b';
+});
+$loop->futureTick(function () {
+    echo 'c';
+});
+echo 'a';
+```
+
+See also [example #3](examples).
+
+#### addSignal()
+
+The `addSignal(int $signal, callable $listener): void` method can be used to
+register a listener to be notified when a signal has been caught by this process.
+
+This is useful to catch user interrupt signals or shutdown signals from
+tools like `supervisor` or `systemd`.
+
+The listener callback function MUST be able to accept a single parameter,
+the signal added by this method or you MAY use a function which
+has no parameters at all.
+
+The listener callback function MUST NOT throw an `Exception`.
+The return value of the listener callback function will be ignored and has
+no effect, so for performance reasons you're recommended to not return
+any excessive data structures.
+
+```php
+$loop->addSignal(SIGINT, function (int $signal) {
+    echo 'Caught user interrupt signal' . PHP_EOL;
+});
+```
+
+See also [example #4](examples).
+
+Signaling is only available on Unix-like platform, Windows isn't
+supported due to operating system limitations.
+This method may throw a `BadMethodCallException` if signals aren't
+supported on this platform, for example when required extensions are
+missing.
+
+**Note: A listener can only be added once to the same signal, any
+attempts to add it more then once will be ignored.**
+
+#### removeSignal()
+
+The `removeSignal(int $signal, callable $listener): void` method can be used to
+remove a previously added signal listener.
+
+```php
+$loop->removeSignal(SIGINT, $listener);
+```
+
+Any attempts to remove listeners that aren't registered will be ignored.
+
+#### addReadStream()
+
+> Advanced! Note that this low-level API is considered advanced usage.
+  Most use cases should probably use the higher-level
+  [readable Stream API](https://github.com/reactphp/stream#readablestreaminterface)
+  instead.
+
+The `addReadStream(resource $stream, callable $callback): void` method can be used to
+register a listener to be notified when a stream is ready to read.
+
+The first parameter MUST be a valid stream resource that supports
+checking whether it is ready to read by this loop implementation.
+A single stream resource MUST NOT be added more than once.
+Instead, either call [`removeReadStream()`](#removereadstream) first or
+react to this event with a single listener and then dispatch from this
+listener. This method MAY throw an `Exception` if the given resource type
+is not supported by this loop implementation.
+
+The listener callback function MUST be able to accept a single parameter,
+the stream resource added by this method or you MAY use a function which
+has no parameters at all.
+
+The listener callback function MUST NOT throw an `Exception`.
+The return value of the listener callback function will be ignored and has
+no effect, so for performance reasons you're recommended to not return
+any excessive data structures.
+
+If you want to access any variables within your callback function, you
+can bind arbitrary data to a callback closure like this:
+
+```php
+$loop->addReadStream($stream, function ($stream) use ($name) {
+    echo $name . ' said: ' . fread($stream);
+});
+```
+
+See also [example #11](examples).
+
+You can invoke [`removeReadStream()`](#removereadstream) to remove the
+read event listener for this stream.
+
+The execution order of listeners when multiple streams become ready at
+the same time is not guaranteed.
+
+Some event loop implementations are known to only trigger the listener if
+the stream *becomes* readable (edge-triggered) and may not trigger if the
+stream has already been readable from the beginning.
+This also implies that a stream may not be recognized as readable when data
+is still left in PHP's internal stream buffers.
+As such, it's recommended to use `stream_set_read_buffer($stream, 0);`
+to disable PHP's internal read buffer in this case.
+
+#### addWriteStream()
+
+> Advanced! Note that this low-level API is considered advanced usage.
+  Most use cases should probably use the higher-level
+  [writable Stream API](https://github.com/reactphp/stream#writablestreaminterface)
+  instead.
+
+The `addWriteStream(resource $stream, callable $callback): void` method can be used to
+register a listener to be notified when a stream is ready to write.
+
+The first parameter MUST be a valid stream resource that supports
+checking whether it is ready to write by this loop implementation.
+A single stream resource MUST NOT be added more than once.
+Instead, either call [`removeWriteStream()`](#removewritestream) first or
+react to this event with a single listener and then dispatch from this
+listener. This method MAY throw an `Exception` if the given resource type
+is not supported by this loop implementation.
+
+The listener callback function MUST be able to accept a single parameter,
+the stream resource added by this method or you MAY use a function which
+has no parameters at all.
+
+The listener callback function MUST NOT throw an `Exception`.
+The return value of the listener callback function will be ignored and has
+no effect, so for performance reasons you're recommended to not return
+any excessive data structures.
+
+If you want to access any variables within your callback function, you
+can bind arbitrary data to a callback closure like this:
+
+```php
+$loop->addWriteStream($stream, function ($stream) use ($name) {
+    fwrite($stream, 'Hello ' . $name);
+});
+```
+
+See also [example #12](examples).
+
+You can invoke [`removeWriteStream()`](#removewritestream) to remove the
+write event listener for this stream.
+
+The execution order of listeners when multiple streams become ready at
+the same time is not guaranteed.
+
+#### removeReadStream()
+
+The `removeReadStream(resource $stream): void` method can be used to
+remove the read event listener for the given stream.
+
+Removing a stream from the loop that has already been removed or trying
+to remove a stream that was never added or is invalid has no effect.
+
+#### removeWriteStream()
+
+The `removeWriteStream(resource $stream): void` method can be used to
+remove the write event listener for the given stream.
+
+Removing a stream from the loop that has already been removed or trying
+to remove a stream that was never added or is invalid has no effect.
+
+## Install
+
+The recommended way to install this library is [through Composer](https://getcomposer.org).
+[New to Composer?](https://getcomposer.org/doc/00-intro.md)
+
+This will install the latest supported version:
+
+```bash
+$ composer require react/event-loop:^0.5.1
+```
+
+See also the [CHANGELOG](CHANGELOG.md) for details about version upgrades.
+
+This project aims to run on any platform and thus does not require any PHP
+extensions and supports running on legacy PHP 5.3 through current PHP 7+ and
+HHVM.
+It's *highly recommended to use PHP 7+* for this project.
+
+Installing any of the event loop extensions is suggested, but entirely optional.
+See also [event loop implementations](#loop-implementations) for more details.
+
+## Tests
+
+To run the test suite, you first need to clone this repo and then install all
+dependencies [through Composer](https://getcomposer.org):
+
+```bash
+$ composer install
+```
+
+To run the test suite, go to the project root and run:
+
+```bash
+$ php vendor/bin/phpunit
+```
+
+## License
+
+MIT, see [LICENSE file](LICENSE).
+
+## More
+
+* See our [Stream component](https://github.com/reactphp/stream) for more
+  information on how streams are used in real-world applications.
+* See our [users wiki](https://github.com/reactphp/react/wiki/Users) and the
+  [dependents on Packagist](https://packagist.org/packages/react/event-loop/dependents)
+  for a list of packages that use the EventLoop in real-world applications.
diff --git a/assets/php/vendor/react/event-loop/composer.json b/assets/php/vendor/react/event-loop/composer.json
new file mode 100644
index 0000000..24974ec
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/composer.json
@@ -0,0 +1,21 @@
+{
+    "name": "react/event-loop",
+    "description": "ReactPHP's core reactor event loop that libraries can use for evented I/O.",
+    "keywords": ["event-loop", "asynchronous"],
+    "license": "MIT",
+    "require": {
+        "php": ">=5.3.0"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "~4.8.35 || ^5.7 || ^6.4"
+    },
+    "suggest": {
+        "ext-event": "~1.0 for ExtEventLoop",
+        "ext-pcntl": "For signal handling support when using the StreamSelectLoop"
+    },
+    "autoload": {
+        "psr-4": {
+            "React\\EventLoop\\": "src"
+        }
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/examples/01-timers.php b/assets/php/vendor/react/event-loop/examples/01-timers.php
new file mode 100644
index 0000000..e6107e4
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/examples/01-timers.php
@@ -0,0 +1,15 @@
+<?php
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = React\EventLoop\Factory::create();
+
+$loop->addTimer(0.8, function () {
+    echo 'world!' . PHP_EOL;
+});
+
+$loop->addTimer(0.3, function () {
+    echo 'hello ';
+});
+
+$loop->run();
diff --git a/assets/php/vendor/react/event-loop/examples/02-periodic.php b/assets/php/vendor/react/event-loop/examples/02-periodic.php
new file mode 100644
index 0000000..5e138a6
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/examples/02-periodic.php
@@ -0,0 +1,16 @@
+<?php
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = React\EventLoop\Factory::create();
+
+$timer = $loop->addPeriodicTimer(0.1, function () {
+    echo 'tick!' . PHP_EOL;
+});
+
+$loop->addTimer(1.0, function () use ($loop, $timer) {
+    $loop->cancelTimer($timer);
+    echo 'Done' . PHP_EOL;
+});
+
+$loop->run();
diff --git a/assets/php/vendor/react/event-loop/examples/03-ticks.php b/assets/php/vendor/react/event-loop/examples/03-ticks.php
new file mode 100644
index 0000000..3f36c6d
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/examples/03-ticks.php
@@ -0,0 +1,15 @@
+<?php
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = React\EventLoop\Factory::create();
+
+$loop->futureTick(function () {
+    echo 'b';
+});
+$loop->futureTick(function () {
+    echo 'c';
+});
+echo 'a';
+
+$loop->run();
diff --git a/assets/php/vendor/react/event-loop/examples/04-signals.php b/assets/php/vendor/react/event-loop/examples/04-signals.php
new file mode 100644
index 0000000..90b6898
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/examples/04-signals.php
@@ -0,0 +1,19 @@
+<?php
+
+require __DIR__ . '/../vendor/autoload.php';
+
+if (!defined('SIGINT')) {
+    fwrite(STDERR, 'Not supported on your platform (ext-pcntl missing or Windows?)' . PHP_EOL);
+    exit(1);
+}
+
+$loop = React\EventLoop\Factory::create();
+
+$loop->addSignal(SIGINT, $func = function ($signal) use ($loop, &$func) {
+    echo 'Signal: ', (string)$signal, PHP_EOL;
+    $loop->removeSignal(SIGINT, $func);
+});
+
+echo 'Listening for SIGINT. Use "kill -SIGINT ' . getmypid() . '" or CTRL+C' . PHP_EOL;
+
+$loop->run();
diff --git a/assets/php/vendor/react/event-loop/examples/11-consume-stdin.php b/assets/php/vendor/react/event-loop/examples/11-consume-stdin.php
new file mode 100644
index 0000000..2a77245
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/examples/11-consume-stdin.php
@@ -0,0 +1,30 @@
+<?php
+
+use React\EventLoop\Factory;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+if (!defined('STDIN') || stream_set_blocking(STDIN, false) !== true) {
+    fwrite(STDERR, 'ERROR: Unable to set STDIN non-blocking (not CLI or Windows?)' . PHP_EOL);
+    exit(1);
+}
+
+$loop = Factory::create();
+
+// read everything from STDIN and report number of bytes
+// for illustration purposes only, should use react/stream instead
+$loop->addReadStream(STDIN, function ($stream) use ($loop) {
+    $chunk = fread($stream, 64 * 1024);
+
+    // reading nothing means we reached EOF
+    if ($chunk === '') {
+        $loop->removeReadStream($stream);
+        stream_set_blocking($stream, true);
+        fclose($stream);
+        return;
+    }
+
+    echo strlen($chunk) . ' bytes' . PHP_EOL;
+});
+
+$loop->run();
diff --git a/assets/php/vendor/react/event-loop/examples/12-generate-yes.php b/assets/php/vendor/react/event-loop/examples/12-generate-yes.php
new file mode 100644
index 0000000..ebc2beb
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/examples/12-generate-yes.php
@@ -0,0 +1,41 @@
+<?php
+
+require __DIR__ . '/../vendor/autoload.php';
+
+// data can be given as first argument or defaults to "y"
+$data = (isset($argv[1]) ? $argv[1] : 'y') . "\n";
+
+// repeat data X times in order to fill around 200 KB
+$data = str_repeat($data, round(200000 / strlen($data)));
+
+$loop = React\EventLoop\Factory::create();
+
+if (!defined('STDOUT') || stream_set_blocking(STDOUT, false) !== true) {
+    fwrite(STDERR, 'ERROR: Unable to set STDOUT non-blocking (not CLI or Windows?)' . PHP_EOL);
+    exit(1);
+}
+
+// write data to STDOUT whenever its write buffer accepts data
+// for illustrations purpose only, should use react/stream instead
+$loop->addWriteStream(STDOUT, function ($stdout) use ($loop, &$data) {
+    // try to write data
+    $r = fwrite($stdout, $data);
+
+    // nothing could be written despite being writable => closed
+    if ($r === 0) {
+        $loop->removeWriteStream($stdout);
+        fclose($stdout);
+        stream_set_blocking($stdout, true);
+        fwrite(STDERR, 'Stopped because STDOUT closed' . PHP_EOL);
+
+        return;
+    }
+
+    // implement a very simple ring buffer, unless everything has been written at once:
+    // everything written in this iteration will be appended for next iteration
+    if (isset($data[$r])) {
+        $data = substr($data, $r) . substr($data, 0, $r);
+    }
+});
+
+$loop->run();
diff --git a/assets/php/vendor/react/event-loop/examples/13-http-client-blocking.php b/assets/php/vendor/react/event-loop/examples/13-http-client-blocking.php
new file mode 100644
index 0000000..a2dde55
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/examples/13-http-client-blocking.php
@@ -0,0 +1,35 @@
+<?php
+
+use React\EventLoop\Factory;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = Factory::create();
+
+// connect to www.google.com:80 (blocking call!)
+// for illustration purposes only, should use react/socket instead
+$stream = stream_socket_client('tcp://www.google.com:80');
+if (!$stream) {
+    exit(1);
+}
+stream_set_blocking($stream, false);
+
+// send HTTP request
+fwrite($stream, "GET / HTTP/1.1\r\nHost: www.google.com\r\nConnection: close\r\n\r\n");
+
+// wait for HTTP response
+$loop->addReadStream($stream, function ($stream) use ($loop) {
+    $chunk = fread($stream, 64 * 1024);
+
+    // reading nothing means we reached EOF
+    if ($chunk === '') {
+        echo '[END]' . PHP_EOL;
+        $loop->removeReadStream($stream);
+        fclose($stream);
+        return;
+    }
+
+    echo $chunk;
+});
+
+$loop->run();
diff --git a/assets/php/vendor/react/event-loop/examples/14-http-client-async.php b/assets/php/vendor/react/event-loop/examples/14-http-client-async.php
new file mode 100644
index 0000000..c82c988
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/examples/14-http-client-async.php
@@ -0,0 +1,63 @@
+<?php
+
+use React\EventLoop\Factory;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = Factory::create();
+
+// resolve hostname before establishing TCP/IP connection (resolving DNS is still blocking here)
+// for illustration purposes only, should use react/socket or react/dns instead!
+$ip = gethostbyname('www.google.com');
+if (ip2long($ip) === false) {
+    echo 'Unable to resolve hostname' . PHP_EOL;
+    exit(1);
+}
+
+// establish TCP/IP connection (non-blocking)
+// for illustraction purposes only, should use react/socket instead!
+$stream = stream_socket_client('tcp://' . $ip . ':80', $errno, $errstr, null, STREAM_CLIENT_CONNECT | STREAM_CLIENT_ASYNC_CONNECT);
+if (!$stream) {
+    exit(1);
+}
+stream_set_blocking($stream, false);
+
+// print progress every 10ms
+echo 'Connecting';
+$timer = $loop->addPeriodicTimer(0.01, function () {
+    echo '.';
+});
+
+// wait for connection success/error
+$loop->addWriteStream($stream, function ($stream) use ($loop, $timer) {
+    $loop->removeWriteStream($stream);
+    $loop->cancelTimer($timer);
+
+    // check for socket error (connection rejected)
+    if (stream_socket_get_name($stream, true) === false) {
+        echo '[unable to connect]' . PHP_EOL;
+        exit(1);
+    } else {
+        echo '[connected]' . PHP_EOL;
+    }
+
+    // send HTTP request
+    fwrite($stream, "GET / HTTP/1.1\r\nHost: www.google.com\r\nConnection: close\r\n\r\n");
+
+    // wait for HTTP response
+    $loop->addReadStream($stream, function ($stream) use ($loop) {
+        $chunk = fread($stream, 64 * 1024);
+
+        // reading nothing means we reached EOF
+        if ($chunk === '') {
+            echo '[END]' . PHP_EOL;
+            $loop->removeReadStream($stream);
+            fclose($stream);
+            return;
+        }
+
+        echo $chunk;
+    });
+});
+
+$loop->run();
diff --git a/assets/php/vendor/react/event-loop/examples/21-http-server.php b/assets/php/vendor/react/event-loop/examples/21-http-server.php
new file mode 100644
index 0000000..89520ce
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/examples/21-http-server.php
@@ -0,0 +1,36 @@
+<?php
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = React\EventLoop\Factory::create();
+
+// start TCP/IP server on localhost:8080
+// for illustration purposes only, should use react/socket instead
+$server = stream_socket_server('tcp://127.0.0.1:8080');
+if (!$server) {
+    exit(1);
+}
+stream_set_blocking($server, false);
+
+// wait for incoming connections on server socket
+$loop->addReadStream($server, function ($server) use ($loop) {
+    $conn = stream_socket_accept($server);
+    $data = "HTTP/1.1 200 OK\r\nContent-Length: 3\r\n\r\nHi\n";
+    $loop->addWriteStream($conn, function ($conn) use (&$data, $loop) {
+        $written = fwrite($conn, $data);
+        if ($written === strlen($data)) {
+            fclose($conn);
+            $loop->removeWriteStream($conn);
+        } else {
+            $data = substr($data, $written);
+        }
+    });
+});
+
+$loop->addPeriodicTimer(5, function () {
+    $memory = memory_get_usage() / 1024;
+    $formatted = number_format($memory, 3).'K';
+    echo "Current memory usage: {$formatted}\n";
+});
+
+$loop->run();
diff --git a/assets/php/vendor/react/event-loop/examples/91-benchmark-ticks.php b/assets/php/vendor/react/event-loop/examples/91-benchmark-ticks.php
new file mode 100644
index 0000000..3f4690b
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/examples/91-benchmark-ticks.php
@@ -0,0 +1,15 @@
+<?php
+
+use React\EventLoop\Factory;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = Factory::create();
+
+$n = isset($argv[1]) ? (int)$argv[1] : 1000 * 100;
+
+for ($i = 0; $i < $n; ++$i) {
+    $loop->futureTick(function () { });
+}
+
+$loop->run();
diff --git a/assets/php/vendor/react/event-loop/examples/92-benchmark-timers.php b/assets/php/vendor/react/event-loop/examples/92-benchmark-timers.php
new file mode 100644
index 0000000..e2e02e4
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/examples/92-benchmark-timers.php
@@ -0,0 +1,15 @@
+<?php
+
+use React\EventLoop\Factory;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = Factory::create();
+
+$n = isset($argv[1]) ? (int)$argv[1] : 1000 * 100;
+
+for ($i = 0; $i < $n; ++$i) {
+    $loop->addTimer(0, function () { });
+}
+
+$loop->run();
diff --git a/assets/php/vendor/react/event-loop/examples/93-benchmark-ticks-delay.php b/assets/php/vendor/react/event-loop/examples/93-benchmark-ticks-delay.php
new file mode 100644
index 0000000..95ee78c
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/examples/93-benchmark-ticks-delay.php
@@ -0,0 +1,22 @@
+<?php
+
+use React\EventLoop\Factory;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = Factory::create();
+
+$ticks = isset($argv[1]) ? (int)$argv[1] : 1000 * 100;
+$tick = function () use (&$tick, &$ticks, $loop) {
+    if ($ticks > 0) {
+        --$ticks;
+        //$loop->addTimer(0, $tick);
+        $loop->futureTick($tick);
+    } else {
+        echo 'done';
+    }
+};
+
+$tick();
+
+$loop->run();
diff --git a/assets/php/vendor/react/event-loop/examples/94-benchmark-timers-delay.php b/assets/php/vendor/react/event-loop/examples/94-benchmark-timers-delay.php
new file mode 100644
index 0000000..2d6cfa2
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/examples/94-benchmark-timers-delay.php
@@ -0,0 +1,22 @@
+<?php
+
+use React\EventLoop\Factory;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = Factory::create();
+
+$ticks = isset($argv[1]) ? (int)$argv[1] : 1000 * 100;
+$tick = function () use (&$tick, &$ticks, $loop) {
+    if ($ticks > 0) {
+        --$ticks;
+        //$loop->futureTick($tick);
+        $loop->addTimer(0, $tick);
+    } else {
+        echo 'done';
+    }
+};
+
+$tick();
+
+$loop->run();
diff --git a/assets/php/vendor/react/event-loop/examples/95-benchmark-memory.php b/assets/php/vendor/react/event-loop/examples/95-benchmark-memory.php
new file mode 100644
index 0000000..084c404
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/examples/95-benchmark-memory.php
@@ -0,0 +1,67 @@
+<?php
+
+/**
+ * Run the script indefinitely seconds with the loop from the factory and report every 2 seconds:
+ * php 95-benchmark-memory.php
+ * Run the script for 30 seconds with the stream_select loop and report every 10 seconds:
+ * php 95-benchmark-memory.php -t 30 -l StreamSelect -r 10
+ */
+
+use React\EventLoop\Factory;
+use React\EventLoop\LoopInterface;
+use React\EventLoop\TimerInterface;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$args = getopt('t:l:r:');
+$t  = isset($args['t']) ? (int)$args['t'] : 0;
+$loop = isset($args['l']) && class_exists('React\EventLoop\\' . $args['l'] . 'Loop') ? 'React\EventLoop\\' . $args['l'] . 'Loop' : Factory::create();
+
+if (!($loop instanceof LoopInterface)) {
+    $loop = new $loop();
+}
+
+$r = isset($args['r']) ? (int)$args['r'] : 2;
+
+$runs = 0;
+
+if (5 < $t) {
+    $loop->addTimer($t, function () use ($loop) {
+        $loop->stop();
+    });
+
+}
+
+$loop->addPeriodicTimer(0.001, function () use (&$runs, $loop) {
+    $runs++;
+
+    $loop->addPeriodicTimer(1, function (TimerInterface $timer) use ($loop) {
+        $loop->cancelTimer($timer);
+    });
+});
+
+$loop->addPeriodicTimer($r, function () use (&$runs) {
+    $kmem = round(memory_get_usage() / 1024);
+    $kmemReal = round(memory_get_usage(true) / 1024);
+    echo "Runs:\t\t\t$runs\n";
+    echo "Memory (internal):\t$kmem KiB\n";
+    echo "Memory (real):\t\t$kmemReal KiB\n";
+    echo str_repeat('-', 50), "\n";
+});
+
+echo "PHP Version:\t\t", phpversion(), "\n";
+echo "Loop\t\t\t", get_class($loop), "\n";
+echo "Time\t\t\t", date('r'), "\n";
+
+echo str_repeat('-', 50), "\n";
+
+$beginTime = time();
+$loop->run();
+$endTime = time();
+$timeTaken = $endTime - $beginTime;
+
+echo "PHP Version:\t\t", phpversion(), "\n";
+echo "Loop\t\t\t", get_class($loop), "\n";
+echo "Time\t\t\t", date('r'), "\n";
+echo "Time taken\t\t", $timeTaken, " seconds\n";
+echo "Runs per second\t\t", round($runs / $timeTaken), "\n";
diff --git a/assets/php/vendor/react/event-loop/phpunit.xml.dist b/assets/php/vendor/react/event-loop/phpunit.xml.dist
new file mode 100644
index 0000000..cba6d4d
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/phpunit.xml.dist
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit backupGlobals="false"
+         backupStaticAttributes="false"
+         colors="true"
+         convertErrorsToExceptions="true"
+         convertNoticesToExceptions="true"
+         convertWarningsToExceptions="true"
+         processIsolation="false"
+         stopOnFailure="false"
+         syntaxCheck="false"
+         bootstrap="tests/bootstrap.php"
+>
+    <testsuites>
+        <testsuite name="React Test Suite">
+            <directory>./tests/</directory>
+        </testsuite>
+    </testsuites>
+
+    <filter>
+        <whitelist>
+            <directory>./src/</directory>
+        </whitelist>
+    </filter>
+</phpunit>
diff --git a/assets/php/vendor/react/event-loop/src/ExtEvLoop.php b/assets/php/vendor/react/event-loop/src/ExtEvLoop.php
new file mode 100644
index 0000000..74db6d0
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/ExtEvLoop.php
@@ -0,0 +1,252 @@
+<?php
+
+namespace React\EventLoop;
+
+use Ev;
+use EvIo;
+use EvLoop;
+use React\EventLoop\Tick\FutureTickQueue;
+use React\EventLoop\Timer\Timer;
+use SplObjectStorage;
+
+/**
+ * An `ext-ev` based event loop.
+ *
+ * This loop uses the [`ev` PECL extension](https://pecl.php.net/package/ev),
+ * that provides an interface to `libev` library.
+ *
+ * This loop is known to work with PHP 5.4 through PHP 7+.
+ *
+ * @see http://php.net/manual/en/book.ev.php
+ * @see https://bitbucket.org/osmanov/pecl-ev/overview
+ */
+class ExtEvLoop implements LoopInterface
+{
+    /**
+     * @var EvLoop
+     */
+    private $loop;
+
+    /**
+     * @var FutureTickQueue
+     */
+    private $futureTickQueue;
+
+    /**
+     * @var SplObjectStorage
+     */
+    private $timers;
+
+    /**
+     * @var EvIo[]
+     */
+    private $readStreams = [];
+
+    /**
+     * @var EvIo[]
+     */
+    private $writeStreams = [];
+
+    /**
+     * @var bool
+     */
+    private $running;
+
+    /**
+     * @var SignalsHandler
+     */
+    private $signals;
+
+    /**
+     * @var \EvSignal[]
+     */
+    private $signalEvents = [];
+
+    public function __construct()
+    {
+        $this->loop = new EvLoop();
+        $this->futureTickQueue = new FutureTickQueue();
+        $this->timers = new SplObjectStorage();
+        $this->signals = new SignalsHandler();
+    }
+
+    public function addReadStream($stream, $listener)
+    {
+        $key = (int)$stream;
+
+        if (isset($this->readStreams[$key])) {
+            return;
+        }
+
+        $callback = $this->getStreamListenerClosure($stream, $listener);
+        $event = $this->loop->io($stream, Ev::READ, $callback);
+        $this->readStreams[$key] = $event;
+    }
+
+    /**
+     * @param resource $stream
+     * @param callable $listener
+     *
+     * @return \Closure
+     */
+    private function getStreamListenerClosure($stream, $listener)
+    {
+        return function () use ($stream, $listener) {
+            call_user_func($listener, $stream);
+        };
+    }
+
+    public function addWriteStream($stream, $listener)
+    {
+        $key = (int)$stream;
+
+        if (isset($this->writeStreams[$key])) {
+            return;
+        }
+
+        $callback = $this->getStreamListenerClosure($stream, $listener);
+        $event = $this->loop->io($stream, Ev::WRITE, $callback);
+        $this->writeStreams[$key] = $event;
+    }
+
+    public function removeReadStream($stream)
+    {
+        $key = (int)$stream;
+
+        if (!isset($this->readStreams[$key])) {
+            return;
+        }
+
+        $this->readStreams[$key]->stop();
+        unset($this->readStreams[$key]);
+    }
+
+    public function removeWriteStream($stream)
+    {
+        $key = (int)$stream;
+
+        if (!isset($this->writeStreams[$key])) {
+            return;
+        }
+
+        $this->writeStreams[$key]->stop();
+        unset($this->writeStreams[$key]);
+    }
+
+    public function addTimer($interval, $callback)
+    {
+        $timer = new Timer($interval, $callback, false);
+
+        $that = $this;
+        $timers = $this->timers;
+        $callback = function () use ($timer, $timers, $that) {
+            call_user_func($timer->getCallback(), $timer);
+
+            if ($timers->contains($timer)) {
+                $that->cancelTimer($timer);
+            }
+        };
+
+        $event = $this->loop->timer($timer->getInterval(), 0.0, $callback);
+        $this->timers->attach($timer, $event);
+
+        return $timer;
+    }
+
+    public function addPeriodicTimer($interval, $callback)
+    {
+        $timer = new Timer($interval, $callback, true);
+
+        $callback = function () use ($timer) {
+            call_user_func($timer->getCallback(), $timer);
+        };
+
+        $event = $this->loop->timer($interval, $interval, $callback);
+        $this->timers->attach($timer, $event);
+
+        return $timer;
+    }
+
+    public function cancelTimer(TimerInterface $timer)
+    {
+        if (!isset($this->timers[$timer])) {
+            return;
+        }
+
+        $event = $this->timers[$timer];
+        $event->stop();
+        $this->timers->detach($timer);
+    }
+
+    public function futureTick($listener)
+    {
+        $this->futureTickQueue->add($listener);
+    }
+
+    public function run()
+    {
+        $this->running = true;
+
+        while ($this->running) {
+            $this->futureTickQueue->tick();
+
+            $hasPendingCallbacks = !$this->futureTickQueue->isEmpty();
+            $wasJustStopped = !$this->running;
+            $nothingLeftToDo = !$this->readStreams
+                && !$this->writeStreams
+                && !$this->timers->count()
+                && $this->signals->isEmpty();
+
+            $flags = Ev::RUN_ONCE;
+            if ($wasJustStopped || $hasPendingCallbacks) {
+                $flags |= Ev::RUN_NOWAIT;
+            } elseif ($nothingLeftToDo) {
+                break;
+            }
+
+            $this->loop->run($flags);
+        }
+    }
+
+    public function stop()
+    {
+        $this->running = false;
+    }
+
+    public function __destruct()
+    {
+        /** @var TimerInterface $timer */
+        foreach ($this->timers as $timer) {
+            $this->cancelTimer($timer);
+        }
+
+        foreach ($this->readStreams as $key => $stream) {
+            $this->removeReadStream($key);
+        }
+
+        foreach ($this->writeStreams as $key => $stream) {
+            $this->removeWriteStream($key);
+        }
+    }
+
+    public function addSignal($signal, $listener)
+    {
+        $this->signals->add($signal, $listener);
+
+        if (!isset($this->signalEvents[$signal])) {
+            $this->signalEvents[$signal] = $this->loop->signal($signal, function() use ($signal) {
+                $this->signals->call($signal);
+            });
+        }
+    }
+
+    public function removeSignal($signal, $listener)
+    {
+        $this->signals->remove($signal, $listener);
+
+        if (isset($this->signalEvents[$signal])) {
+            $this->signalEvents[$signal]->stop();
+            unset($this->signalEvents[$signal]);
+        }
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/src/ExtEventLoop.php b/assets/php/vendor/react/event-loop/src/ExtEventLoop.php
new file mode 100644
index 0000000..622dd47
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/ExtEventLoop.php
@@ -0,0 +1,259 @@
+<?php
+
+namespace React\EventLoop;
+
+use BadMethodCallException;
+use Event;
+use EventBase;
+use EventConfig as EventBaseConfig;
+use React\EventLoop\Tick\FutureTickQueue;
+use React\EventLoop\Timer\Timer;
+use SplObjectStorage;
+
+/**
+ * An `ext-event` based event loop.
+ *
+ * This uses the [`event` PECL extension](https://pecl.php.net/package/event).
+ * It supports the same backends as libevent.
+ *
+ * This loop is known to work with PHP 5.4 through PHP 7+.
+ *
+ * @link https://pecl.php.net/package/event
+ */
+final class ExtEventLoop implements LoopInterface
+{
+    private $eventBase;
+    private $futureTickQueue;
+    private $timerCallback;
+    private $timerEvents;
+    private $streamCallback;
+    private $readEvents = array();
+    private $writeEvents = array();
+    private $readListeners = array();
+    private $writeListeners = array();
+    private $readRefs = array();
+    private $writeRefs = array();
+    private $running;
+    private $signals;
+    private $signalEvents = array();
+
+    public function __construct()
+    {
+        if (!class_exists('EventBase', false)) {
+            throw new BadMethodCallException('Cannot create ExtEventLoop, ext-event extension missing');
+        }
+
+        $config = new EventBaseConfig();
+        $config->requireFeatures(EventBaseConfig::FEATURE_FDS);
+
+        $this->eventBase = new EventBase($config);
+        $this->futureTickQueue = new FutureTickQueue();
+        $this->timerEvents = new SplObjectStorage();
+        $this->signals = new SignalsHandler();
+
+        $this->createTimerCallback();
+        $this->createStreamCallback();
+    }
+
+    public function addReadStream($stream, $listener)
+    {
+        $key = (int) $stream;
+        if (isset($this->readListeners[$key])) {
+            return;
+        }
+
+        $event = new Event($this->eventBase, $stream, Event::PERSIST | Event::READ, $this->streamCallback);
+        $event->add();
+        $this->readEvents[$key] = $event;
+        $this->readListeners[$key] = $listener;
+
+        // ext-event does not increase refcount on stream resources for PHP 7+
+        // manually keep track of stream resource to prevent premature garbage collection
+        if (PHP_VERSION_ID >= 70000) {
+            $this->readRefs[$key] = $stream;
+        }
+    }
+
+    public function addWriteStream($stream, $listener)
+    {
+        $key = (int) $stream;
+        if (isset($this->writeListeners[$key])) {
+            return;
+        }
+
+        $event = new Event($this->eventBase, $stream, Event::PERSIST | Event::WRITE, $this->streamCallback);
+        $event->add();
+        $this->writeEvents[$key] = $event;
+        $this->writeListeners[$key] = $listener;
+
+        // ext-event does not increase refcount on stream resources for PHP 7+
+        // manually keep track of stream resource to prevent premature garbage collection
+        if (PHP_VERSION_ID >= 70000) {
+            $this->writeRefs[$key] = $stream;
+        }
+    }
+
+    public function removeReadStream($stream)
+    {
+        $key = (int) $stream;
+
+        if (isset($this->readEvents[$key])) {
+            $this->readEvents[$key]->free();
+            unset(
+                $this->readEvents[$key],
+                $this->readListeners[$key],
+                $this->readRefs[$key]
+            );
+        }
+    }
+
+    public function removeWriteStream($stream)
+    {
+        $key = (int) $stream;
+
+        if (isset($this->writeEvents[$key])) {
+            $this->writeEvents[$key]->free();
+            unset(
+                $this->writeEvents[$key],
+                $this->writeListeners[$key],
+                $this->writeRefs[$key]
+            );
+        }
+    }
+
+    public function addTimer($interval, $callback)
+    {
+        $timer = new Timer($interval, $callback, false);
+
+        $this->scheduleTimer($timer);
+
+        return $timer;
+    }
+
+    public function addPeriodicTimer($interval, $callback)
+    {
+        $timer = new Timer($interval, $callback, true);
+
+        $this->scheduleTimer($timer);
+
+        return $timer;
+    }
+
+    public function cancelTimer(TimerInterface $timer)
+    {
+        if ($this->timerEvents->contains($timer)) {
+            $this->timerEvents[$timer]->free();
+            $this->timerEvents->detach($timer);
+        }
+    }
+
+    public function futureTick($listener)
+    {
+        $this->futureTickQueue->add($listener);
+    }
+
+    public function addSignal($signal, $listener)
+    {
+        $this->signals->add($signal, $listener);
+
+        if (!isset($this->signalEvents[$signal])) {
+            $this->signalEvents[$signal] = Event::signal($this->eventBase, $signal, array($this->signals, 'call'));
+            $this->signalEvents[$signal]->add();
+        }
+    }
+
+    public function removeSignal($signal, $listener)
+    {
+        $this->signals->remove($signal, $listener);
+
+        if (isset($this->signalEvents[$signal]) && $this->signals->count($signal) === 0) {
+            $this->signalEvents[$signal]->free();
+            unset($this->signalEvents[$signal]);
+        }
+    }
+
+    public function run()
+    {
+        $this->running = true;
+
+        while ($this->running) {
+            $this->futureTickQueue->tick();
+
+            $flags = EventBase::LOOP_ONCE;
+            if (!$this->running || !$this->futureTickQueue->isEmpty()) {
+                $flags |= EventBase::LOOP_NONBLOCK;
+            } elseif (!$this->readEvents && !$this->writeEvents && !$this->timerEvents->count() && $this->signals->isEmpty()) {
+                break;
+            }
+
+            $this->eventBase->loop($flags);
+        }
+    }
+
+    public function stop()
+    {
+        $this->running = false;
+    }
+
+    /**
+     * Schedule a timer for execution.
+     *
+     * @param TimerInterface $timer
+     */
+    private function scheduleTimer(TimerInterface $timer)
+    {
+        $flags = Event::TIMEOUT;
+
+        if ($timer->isPeriodic()) {
+            $flags |= Event::PERSIST;
+        }
+
+        $event = new Event($this->eventBase, -1, $flags, $this->timerCallback, $timer);
+        $this->timerEvents[$timer] = $event;
+
+        $event->add($timer->getInterval());
+    }
+
+    /**
+     * Create a callback used as the target of timer events.
+     *
+     * A reference is kept to the callback for the lifetime of the loop
+     * to prevent "Cannot destroy active lambda function" fatal error from
+     * the event extension.
+     */
+    private function createTimerCallback()
+    {
+        $timers = $this->timerEvents;
+        $this->timerCallback = function ($_, $__, $timer) use ($timers) {
+            call_user_func($timer->getCallback(), $timer);
+
+            if (!$timer->isPeriodic() && $timers->contains($timer)) {
+                $this->cancelTimer($timer);
+            }
+        };
+    }
+
+    /**
+     * Create a callback used as the target of stream events.
+     *
+     * A reference is kept to the callback for the lifetime of the loop
+     * to prevent "Cannot destroy active lambda function" fatal error from
+     * the event extension.
+     */
+    private function createStreamCallback()
+    {
+        $read =& $this->readListeners;
+        $write =& $this->writeListeners;
+        $this->streamCallback = function ($stream, $flags) use (&$read, &$write) {
+            $key = (int) $stream;
+
+            if (Event::READ === (Event::READ & $flags) && isset($read[$key])) {
+                call_user_func($read[$key], $stream);
+            }
+
+            if (Event::WRITE === (Event::WRITE & $flags) && isset($write[$key])) {
+                call_user_func($write[$key], $stream);
+            }
+        };
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/src/ExtLibevLoop.php b/assets/php/vendor/react/event-loop/src/ExtLibevLoop.php
new file mode 100644
index 0000000..d3b0df8
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/ExtLibevLoop.php
@@ -0,0 +1,199 @@
+<?php
+
+namespace React\EventLoop;
+
+use BadMethodCallException;
+use libev\EventLoop;
+use libev\IOEvent;
+use libev\SignalEvent;
+use libev\TimerEvent;
+use React\EventLoop\Tick\FutureTickQueue;
+use React\EventLoop\Timer\Timer;
+use SplObjectStorage;
+
+/**
+ * An `ext-libev` based event loop.
+ *
+ * This uses an [unofficial `libev` extension](https://github.com/m4rw3r/php-libev).
+ * It supports the same backends as libevent.
+ *
+ * This loop does only work with PHP 5.
+ * An update for PHP 7 is [unlikely](https://github.com/m4rw3r/php-libev/issues/8)
+ * to happen any time soon.
+ *
+ * @see https://github.com/m4rw3r/php-libev
+ * @see https://gist.github.com/1688204
+ */
+final class ExtLibevLoop implements LoopInterface
+{
+    private $loop;
+    private $futureTickQueue;
+    private $timerEvents;
+    private $readEvents = array();
+    private $writeEvents = array();
+    private $running;
+    private $signals;
+    private $signalEvents = array();
+
+    public function __construct()
+    {
+        if (!class_exists('libev\EventLoop', false)) {
+            throw new BadMethodCallException('Cannot create ExtLibevLoop, ext-libev extension missing');
+        }
+
+        $this->loop = new EventLoop();
+        $this->futureTickQueue = new FutureTickQueue();
+        $this->timerEvents = new SplObjectStorage();
+        $this->signals = new SignalsHandler();
+    }
+
+    public function addReadStream($stream, $listener)
+    {
+        if (isset($this->readEvents[(int) $stream])) {
+            return;
+        }
+
+        $callback = function () use ($stream, $listener) {
+            call_user_func($listener, $stream);
+        };
+
+        $event = new IOEvent($callback, $stream, IOEvent::READ);
+        $this->loop->add($event);
+
+        $this->readEvents[(int) $stream] = $event;
+    }
+
+    public function addWriteStream($stream, $listener)
+    {
+        if (isset($this->writeEvents[(int) $stream])) {
+            return;
+        }
+
+        $callback = function () use ($stream, $listener) {
+            call_user_func($listener, $stream);
+        };
+
+        $event = new IOEvent($callback, $stream, IOEvent::WRITE);
+        $this->loop->add($event);
+
+        $this->writeEvents[(int) $stream] = $event;
+    }
+
+    public function removeReadStream($stream)
+    {
+        $key = (int) $stream;
+
+        if (isset($this->readEvents[$key])) {
+            $this->readEvents[$key]->stop();
+            $this->loop->remove($this->readEvents[$key]);
+            unset($this->readEvents[$key]);
+        }
+    }
+
+    public function removeWriteStream($stream)
+    {
+        $key = (int) $stream;
+
+        if (isset($this->writeEvents[$key])) {
+            $this->writeEvents[$key]->stop();
+            $this->loop->remove($this->writeEvents[$key]);
+            unset($this->writeEvents[$key]);
+        }
+    }
+
+    public function addTimer($interval, $callback)
+    {
+        $timer = new Timer( $interval, $callback, false);
+
+        $that = $this;
+        $timers = $this->timerEvents;
+        $callback = function () use ($timer, $timers, $that) {
+            call_user_func($timer->getCallback(), $timer);
+
+            if ($timers->contains($timer)) {
+                $that->cancelTimer($timer);
+            }
+        };
+
+        $event = new TimerEvent($callback, $timer->getInterval());
+        $this->timerEvents->attach($timer, $event);
+        $this->loop->add($event);
+
+        return $timer;
+    }
+
+    public function addPeriodicTimer($interval, $callback)
+    {
+        $timer = new Timer($interval, $callback, true);
+
+        $callback = function () use ($timer) {
+            call_user_func($timer->getCallback(), $timer);
+        };
+
+        $event = new TimerEvent($callback, $interval, $interval);
+        $this->timerEvents->attach($timer, $event);
+        $this->loop->add($event);
+
+        return $timer;
+    }
+
+    public function cancelTimer(TimerInterface $timer)
+    {
+        if (isset($this->timerEvents[$timer])) {
+            $this->loop->remove($this->timerEvents[$timer]);
+            $this->timerEvents->detach($timer);
+        }
+    }
+
+    public function futureTick($listener)
+    {
+        $this->futureTickQueue->add($listener);
+    }
+
+    public function addSignal($signal, $listener)
+    {
+        $this->signals->add($signal, $listener);
+
+        if (!isset($this->signalEvents[$signal])) {
+            $signals = $this->signals;
+            $this->signalEvents[$signal] = new SignalEvent(function () use ($signals, $signal) {
+                $signals->call($signal);
+            }, $signal);
+            $this->loop->add($this->signalEvents[$signal]);
+        }
+    }
+
+    public function removeSignal($signal, $listener)
+    {
+        $this->signals->remove($signal, $listener);
+
+        if (isset($this->signalEvents[$signal]) && $this->signals->count($signal) === 0) {
+            $this->signalEvents[$signal]->stop();
+            $this->loop->remove($this->signalEvents[$signal]);
+            unset($this->signalEvents[$signal]);
+        }
+    }
+
+    public function run()
+    {
+        $this->running = true;
+
+        while ($this->running) {
+            $this->futureTickQueue->tick();
+
+            $flags = EventLoop::RUN_ONCE;
+            if (!$this->running || !$this->futureTickQueue->isEmpty()) {
+                $flags |= EventLoop::RUN_NOWAIT;
+            } elseif (!$this->readEvents && !$this->writeEvents && !$this->timerEvents->count() && $this->signals->isEmpty()) {
+                break;
+            }
+
+            $this->loop->run($flags);
+        }
+    }
+
+    public function stop()
+    {
+        $this->running = false;
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/src/ExtLibeventLoop.php b/assets/php/vendor/react/event-loop/src/ExtLibeventLoop.php
new file mode 100644
index 0000000..427f8db
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/ExtLibeventLoop.php
@@ -0,0 +1,283 @@
+<?php
+
+namespace React\EventLoop;
+
+use BadMethodCallException;
+use Event;
+use EventBase;
+use React\EventLoop\Tick\FutureTickQueue;
+use React\EventLoop\Timer\Timer;
+use SplObjectStorage;
+
+/**
+ * An `ext-libevent` based event loop.
+ *
+ * This uses the [`libevent` PECL extension](https://pecl.php.net/package/libevent).
+ * `libevent` itself supports a number of system-specific backends (epoll, kqueue).
+ *
+ * This event loop does only work with PHP 5.
+ * An [unofficial update](https://github.com/php/pecl-event-libevent/pull/2) for
+ * PHP 7 does exist, but it is known to cause regular crashes due to `SEGFAULT`s.
+ * To reiterate: Using this event loop on PHP 7 is not recommended.
+ * Accordingly, the [`Factory`](#factory) will not try to use this event loop on
+ * PHP 7.
+ *
+ * This event loop is known to trigger a readable listener only if
+ * the stream *becomes* readable (edge-triggered) and may not trigger if the
+ * stream has already been readable from the beginning.
+ * This also implies that a stream may not be recognized as readable when data
+ * is still left in PHP's internal stream buffers.
+ * As such, it's recommended to use `stream_set_read_buffer($stream, 0);`
+ * to disable PHP's internal read buffer in this case.
+ * See also [`addReadStream()`](#addreadstream) for more details.
+ *
+ * @link https://pecl.php.net/package/libevent
+ */
+final class ExtLibeventLoop implements LoopInterface
+{
+    /** @internal */
+    const MICROSECONDS_PER_SECOND = 1000000;
+
+    private $eventBase;
+    private $futureTickQueue;
+    private $timerCallback;
+    private $timerEvents;
+    private $streamCallback;
+    private $readEvents = array();
+    private $writeEvents = array();
+    private $readListeners = array();
+    private $writeListeners = array();
+    private $running;
+    private $signals;
+    private $signalEvents = array();
+
+    public function __construct()
+    {
+        if (!function_exists('event_base_new')) {
+            throw new BadMethodCallException('Cannot create ExtLibeventLoop, ext-libevent extension missing');
+        }
+
+        $this->eventBase = event_base_new();
+        $this->futureTickQueue = new FutureTickQueue();
+        $this->timerEvents = new SplObjectStorage();
+        $this->signals = new SignalsHandler();
+
+        $this->createTimerCallback();
+        $this->createStreamCallback();
+    }
+
+    public function addReadStream($stream, $listener)
+    {
+        $key = (int) $stream;
+        if (isset($this->readListeners[$key])) {
+            return;
+        }
+
+        $event = event_new();
+        event_set($event, $stream, EV_PERSIST | EV_READ, $this->streamCallback);
+        event_base_set($event, $this->eventBase);
+        event_add($event);
+
+        $this->readEvents[$key] = $event;
+        $this->readListeners[$key] = $listener;
+    }
+
+    public function addWriteStream($stream, $listener)
+    {
+        $key = (int) $stream;
+        if (isset($this->writeListeners[$key])) {
+            return;
+        }
+
+        $event = event_new();
+        event_set($event, $stream, EV_PERSIST | EV_WRITE, $this->streamCallback);
+        event_base_set($event, $this->eventBase);
+        event_add($event);
+
+        $this->writeEvents[$key] = $event;
+        $this->writeListeners[$key] = $listener;
+    }
+
+    public function removeReadStream($stream)
+    {
+        $key = (int) $stream;
+
+        if (isset($this->readListeners[$key])) {
+            $event = $this->readEvents[$key];
+            event_del($event);
+            event_free($event);
+
+            unset(
+                $this->readEvents[$key],
+                $this->readListeners[$key]
+            );
+        }
+    }
+
+    public function removeWriteStream($stream)
+    {
+        $key = (int) $stream;
+
+        if (isset($this->writeListeners[$key])) {
+            $event = $this->writeEvents[$key];
+            event_del($event);
+            event_free($event);
+
+            unset(
+                $this->writeEvents[$key],
+                $this->writeListeners[$key]
+            );
+        }
+    }
+
+    public function addTimer($interval, $callback)
+    {
+        $timer = new Timer($interval, $callback, false);
+
+        $this->scheduleTimer($timer);
+
+        return $timer;
+    }
+
+    public function addPeriodicTimer($interval, $callback)
+    {
+        $timer = new Timer($interval, $callback, true);
+
+        $this->scheduleTimer($timer);
+
+        return $timer;
+    }
+
+    public function cancelTimer(TimerInterface $timer)
+    {
+        if ($this->timerEvents->contains($timer)) {
+            $event = $this->timerEvents[$timer];
+            event_del($event);
+            event_free($event);
+
+            $this->timerEvents->detach($timer);
+        }
+    }
+
+    public function futureTick($listener)
+    {
+        $this->futureTickQueue->add($listener);
+    }
+
+    public function addSignal($signal, $listener)
+    {
+        $this->signals->add($signal, $listener);
+
+        if (!isset($this->signalEvents[$signal])) {
+            $this->signalEvents[$signal] = event_new();
+            event_set($this->signalEvents[$signal], $signal, EV_PERSIST | EV_SIGNAL, array($this->signals, 'call'));
+            event_base_set($this->signalEvents[$signal], $this->eventBase);
+            event_add($this->signalEvents[$signal]);
+        }
+    }
+
+    public function removeSignal($signal, $listener)
+    {
+        $this->signals->remove($signal, $listener);
+
+        if (isset($this->signalEvents[$signal]) && $this->signals->count($signal) === 0) {
+            event_del($this->signalEvents[$signal]);
+            event_free($this->signalEvents[$signal]);
+            unset($this->signalEvents[$signal]);
+        }
+    }
+
+    public function run()
+    {
+        $this->running = true;
+
+        while ($this->running) {
+            $this->futureTickQueue->tick();
+
+            $flags = EVLOOP_ONCE;
+            if (!$this->running || !$this->futureTickQueue->isEmpty()) {
+                $flags |= EVLOOP_NONBLOCK;
+            } elseif (!$this->readEvents && !$this->writeEvents && !$this->timerEvents->count() && $this->signals->isEmpty()) {
+                break;
+            }
+
+            event_base_loop($this->eventBase, $flags);
+        }
+    }
+
+    public function stop()
+    {
+        $this->running = false;
+    }
+
+    /**
+     * Schedule a timer for execution.
+     *
+     * @param TimerInterface $timer
+     */
+    private function scheduleTimer(TimerInterface $timer)
+    {
+        $this->timerEvents[$timer] = $event = event_timer_new();
+
+        event_timer_set($event, $this->timerCallback, $timer);
+        event_base_set($event, $this->eventBase);
+        event_add($event, $timer->getInterval() * self::MICROSECONDS_PER_SECOND);
+    }
+
+    /**
+     * Create a callback used as the target of timer events.
+     *
+     * A reference is kept to the callback for the lifetime of the loop
+     * to prevent "Cannot destroy active lambda function" fatal error from
+     * the event extension.
+     */
+    private function createTimerCallback()
+    {
+        $that = $this;
+        $timers = $this->timerEvents;
+        $this->timerCallback = function ($_, $__, $timer) use ($timers, $that) {
+            call_user_func($timer->getCallback(), $timer);
+
+            // Timer already cancelled ...
+            if (!$timers->contains($timer)) {
+                return;
+            }
+
+            // Reschedule periodic timers ...
+            if ($timer->isPeriodic()) {
+                event_add(
+                    $timers[$timer],
+                    $timer->getInterval() * ExtLibeventLoop::MICROSECONDS_PER_SECOND
+                );
+
+            // Clean-up one shot timers ...
+            } else {
+                $that->cancelTimer($timer);
+            }
+        };
+    }
+
+    /**
+     * Create a callback used as the target of stream events.
+     *
+     * A reference is kept to the callback for the lifetime of the loop
+     * to prevent "Cannot destroy active lambda function" fatal error from
+     * the event extension.
+     */
+    private function createStreamCallback()
+    {
+        $read =& $this->readListeners;
+        $write =& $this->writeListeners;
+        $this->streamCallback = function ($stream, $flags) use (&$read, &$write) {
+            $key = (int) $stream;
+
+            if (EV_READ === (EV_READ & $flags) && isset($read[$key])) {
+                call_user_func($read[$key], $stream);
+            }
+
+            if (EV_WRITE === (EV_WRITE & $flags) && isset($write[$key])) {
+                call_user_func($write[$key], $stream);
+            }
+        };
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/src/Factory.php b/assets/php/vendor/react/event-loop/src/Factory.php
new file mode 100644
index 0000000..b46fc07
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/Factory.php
@@ -0,0 +1,41 @@
+<?php
+
+namespace React\EventLoop;
+
+/**
+ * The `Factory` class exists as a convenient way to pick the best available event loop implementation.
+ */
+final class Factory
+{
+    /**
+     * Creates a new event loop instance
+     *
+     * ```php
+     * $loop = React\EventLoop\Factory::create();
+     * ```
+     *
+     * This method always returns an instance implementing `LoopInterface`,
+     * the actual event loop implementation is an implementation detail.
+     *
+     * This method should usually only be called once at the beginning of the program.
+     *
+     * @return LoopInterface
+     */
+    public static function create()
+    {
+        // @codeCoverageIgnoreStart
+        if (class_exists('libev\EventLoop', false)) {
+            return new ExtLibevLoop();
+        } elseif (class_exists('EvLoop', false)) {
+            return new ExtEvLoop();
+        } elseif (class_exists('EventBase', false)) {
+            return new ExtEventLoop();
+        } elseif (function_exists('event_base_new') && PHP_VERSION_ID < 70000) {
+            // only use ext-libevent on PHP < 7 for now
+            return new ExtLibeventLoop();
+        }
+
+        return new StreamSelectLoop();
+        // @codeCoverageIgnoreEnd
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/src/LoopInterface.php b/assets/php/vendor/react/event-loop/src/LoopInterface.php
new file mode 100644
index 0000000..1cc8640
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/LoopInterface.php
@@ -0,0 +1,463 @@
+<?php
+
+namespace React\EventLoop;
+
+interface LoopInterface
+{
+    /**
+     * [Advanced] Register a listener to be notified when a stream is ready to read.
+     *
+     * Note that this low-level API is considered advanced usage.
+     * Most use cases should probably use the higher-level
+     * [readable Stream API](https://github.com/reactphp/stream#readablestreaminterface)
+     * instead.
+     *
+     * The first parameter MUST be a valid stream resource that supports
+     * checking whether it is ready to read by this loop implementation.
+     * A single stream resource MUST NOT be added more than once.
+     * Instead, either call [`removeReadStream()`](#removereadstream) first or
+     * react to this event with a single listener and then dispatch from this
+     * listener. This method MAY throw an `Exception` if the given resource type
+     * is not supported by this loop implementation.
+     *
+     * The listener callback function MUST be able to accept a single parameter,
+     * the stream resource added by this method or you MAY use a function which
+     * has no parameters at all.
+     *
+     * The listener callback function MUST NOT throw an `Exception`.
+     * The return value of the listener callback function will be ignored and has
+     * no effect, so for performance reasons you're recommended to not return
+     * any excessive data structures.
+     *
+     * If you want to access any variables within your callback function, you
+     * can bind arbitrary data to a callback closure like this:
+     *
+     * ```php
+     * $loop->addReadStream($stream, function ($stream) use ($name) {
+     *     echo $name . ' said: ' . fread($stream);
+     * });
+     * ```
+     *
+     * See also [example #11](examples).
+     *
+     * You can invoke [`removeReadStream()`](#removereadstream) to remove the
+     * read event listener for this stream.
+     *
+     * The execution order of listeners when multiple streams become ready at
+     * the same time is not guaranteed.
+     *
+     * @param resource $stream   The PHP stream resource to check.
+     * @param callable $listener Invoked when the stream is ready.
+     * @throws \Exception if the given resource type is not supported by this loop implementation
+     * @see self::removeReadStream()
+     */
+    public function addReadStream($stream, $listener);
+
+    /**
+     * [Advanced] Register a listener to be notified when a stream is ready to write.
+     *
+     * Note that this low-level API is considered advanced usage.
+     * Most use cases should probably use the higher-level
+     * [writable Stream API](https://github.com/reactphp/stream#writablestreaminterface)
+     * instead.
+     *
+     * The first parameter MUST be a valid stream resource that supports
+     * checking whether it is ready to write by this loop implementation.
+     * A single stream resource MUST NOT be added more than once.
+     * Instead, either call [`removeWriteStream()`](#removewritestream) first or
+     * react to this event with a single listener and then dispatch from this
+     * listener. This method MAY throw an `Exception` if the given resource type
+     * is not supported by this loop implementation.
+     *
+     * The listener callback function MUST be able to accept a single parameter,
+     * the stream resource added by this method or you MAY use a function which
+     * has no parameters at all.
+     *
+     * The listener callback function MUST NOT throw an `Exception`.
+     * The return value of the listener callback function will be ignored and has
+     * no effect, so for performance reasons you're recommended to not return
+     * any excessive data structures.
+     *
+     * If you want to access any variables within your callback function, you
+     * can bind arbitrary data to a callback closure like this:
+     *
+     * ```php
+     * $loop->addWriteStream($stream, function ($stream) use ($name) {
+     *     fwrite($stream, 'Hello ' . $name);
+     * });
+     * ```
+     *
+     * See also [example #12](examples).
+     *
+     * You can invoke [`removeWriteStream()`](#removewritestream) to remove the
+     * write event listener for this stream.
+     *
+     * The execution order of listeners when multiple streams become ready at
+     * the same time is not guaranteed.
+     *
+     * Some event loop implementations are known to only trigger the listener if
+     * the stream *becomes* readable (edge-triggered) and may not trigger if the
+     * stream has already been readable from the beginning.
+     * This also implies that a stream may not be recognized as readable when data
+     * is still left in PHP's internal stream buffers.
+     * As such, it's recommended to use `stream_set_read_buffer($stream, 0);`
+     * to disable PHP's internal read buffer in this case.
+     *
+     * @param resource $stream   The PHP stream resource to check.
+     * @param callable $listener Invoked when the stream is ready.
+     * @throws \Exception if the given resource type is not supported by this loop implementation
+     * @see self::removeWriteStream()
+     */
+    public function addWriteStream($stream, $listener);
+
+    /**
+     * Remove the read event listener for the given stream.
+     *
+     * Removing a stream from the loop that has already been removed or trying
+     * to remove a stream that was never added or is invalid has no effect.
+     *
+     * @param resource $stream The PHP stream resource.
+     */
+    public function removeReadStream($stream);
+
+    /**
+     * Remove the write event listener for the given stream.
+     *
+     * Removing a stream from the loop that has already been removed or trying
+     * to remove a stream that was never added or is invalid has no effect.
+     *
+     * @param resource $stream The PHP stream resource.
+     */
+    public function removeWriteStream($stream);
+
+    /**
+     * Enqueue a callback to be invoked once after the given interval.
+     *
+     * The timer callback function MUST be able to accept a single parameter,
+     * the timer instance as also returned by this method or you MAY use a
+     * function which has no parameters at all.
+     *
+     * The timer callback function MUST NOT throw an `Exception`.
+     * The return value of the timer callback function will be ignored and has
+     * no effect, so for performance reasons you're recommended to not return
+     * any excessive data structures.
+     *
+     * Unlike [`addPeriodicTimer()`](#addperiodictimer), this method will ensure
+     * the callback will be invoked only once after the given interval.
+     * You can invoke [`cancelTimer`](#canceltimer) to cancel a pending timer.
+     *
+     * ```php
+     * $loop->addTimer(0.8, function () {
+     *     echo 'world!' . PHP_EOL;
+     * });
+     *
+     * $loop->addTimer(0.3, function () {
+     *     echo 'hello ';
+     * });
+     * ```
+     *
+     * See also [example #1](examples).
+     *
+     * If you want to access any variables within your callback function, you
+     * can bind arbitrary data to a callback closure like this:
+     *
+     * ```php
+     * function hello($name, LoopInterface $loop)
+     * {
+     *     $loop->addTimer(1.0, function () use ($name) {
+     *         echo "hello $name\n";
+     *     });
+     * }
+     *
+     * hello('Tester', $loop);
+     * ```
+     *
+     * This interface does not enforce any particular timer resolution, so
+     * special care may have to be taken if you rely on very high precision with
+     * millisecond accuracy or below. Event loop implementations SHOULD work on
+     * a best effort basis and SHOULD provide at least millisecond accuracy
+     * unless otherwise noted. Many existing event loop implementations are
+     * known to provide microsecond accuracy, but it's generally not recommended
+     * to rely on this high precision.
+     *
+     * Similarly, the execution order of timers scheduled to execute at the
+     * same time (within its possible accuracy) is not guaranteed.
+     *
+     * This interface suggests that event loop implementations SHOULD use a
+     * monotonic time source if available. Given that a monotonic time source is
+     * not available on PHP by default, event loop implementations MAY fall back
+     * to using wall-clock time.
+     * While this does not affect many common use cases, this is an important
+     * distinction for programs that rely on a high time precision or on systems
+     * that are subject to discontinuous time adjustments (time jumps).
+     * This means that if you schedule a timer to trigger in 30s and then adjust
+     * your system time forward by 20s, the timer SHOULD still trigger in 30s.
+     * See also [event loop implementations](#loop-implementations) for more details.
+     *
+     * @param int|float $interval The number of seconds to wait before execution.
+     * @param callable  $callback The callback to invoke.
+     *
+     * @return TimerInterface
+     */
+    public function addTimer($interval, $callback);
+
+    /**
+     * Enqueue a callback to be invoked repeatedly after the given interval.
+     *
+     * The timer callback function MUST be able to accept a single parameter,
+     * the timer instance as also returned by this method or you MAY use a
+     * function which has no parameters at all.
+     *
+     * The timer callback function MUST NOT throw an `Exception`.
+     * The return value of the timer callback function will be ignored and has
+     * no effect, so for performance reasons you're recommended to not return
+     * any excessive data structures.
+     *
+     * Unlike [`addTimer()`](#addtimer), this method will ensure the the
+     * callback will be invoked infinitely after the given interval or until you
+     * invoke [`cancelTimer`](#canceltimer).
+     *
+     * ```php
+     * $timer = $loop->addPeriodicTimer(0.1, function () {
+     *     echo 'tick!' . PHP_EOL;
+     * });
+     *
+     * $loop->addTimer(1.0, function () use ($loop, $timer) {
+     *     $loop->cancelTimer($timer);
+     *     echo 'Done' . PHP_EOL;
+     * });
+     * ```
+     *
+     * See also [example #2](examples).
+     *
+     * If you want to limit the number of executions, you can bind
+     * arbitrary data to a callback closure like this:
+     *
+     * ```php
+     * function hello($name, LoopInterface $loop)
+     * {
+     *     $n = 3;
+     *     $loop->addPeriodicTimer(1.0, function ($timer) use ($name, $loop, &$n) {
+     *         if ($n > 0) {
+     *             --$n;
+     *             echo "hello $name\n";
+     *         } else {
+     *             $loop->cancelTimer($timer);
+     *         }
+     *     });
+     * }
+     *
+     * hello('Tester', $loop);
+     * ```
+     *
+     * This interface does not enforce any particular timer resolution, so
+     * special care may have to be taken if you rely on very high precision with
+     * millisecond accuracy or below. Event loop implementations SHOULD work on
+     * a best effort basis and SHOULD provide at least millisecond accuracy
+     * unless otherwise noted. Many existing event loop implementations are
+     * known to provide microsecond accuracy, but it's generally not recommended
+     * to rely on this high precision.
+     *
+     * Similarly, the execution order of timers scheduled to execute at the
+     * same time (within its possible accuracy) is not guaranteed.
+     *
+     * This interface suggests that event loop implementations SHOULD use a
+     * monotonic time source if available. Given that a monotonic time source is
+     * not available on PHP by default, event loop implementations MAY fall back
+     * to using wall-clock time.
+     * While this does not affect many common use cases, this is an important
+     * distinction for programs that rely on a high time precision or on systems
+     * that are subject to discontinuous time adjustments (time jumps).
+     * This means that if you schedule a timer to trigger in 30s and then adjust
+     * your system time forward by 20s, the timer SHOULD still trigger in 30s.
+     * See also [event loop implementations](#loop-implementations) for more details.
+     *
+     * Additionally, periodic timers may be subject to timer drift due to
+     * re-scheduling after each invocation. As such, it's generally not
+     * recommended to rely on this for high precision intervals with millisecond
+     * accuracy or below.
+     *
+     * @param int|float $interval The number of seconds to wait before execution.
+     * @param callable  $callback The callback to invoke.
+     *
+     * @return TimerInterface
+     */
+    public function addPeriodicTimer($interval, $callback);
+
+    /**
+     * Cancel a pending timer.
+     *
+     * See also [`addPeriodicTimer()`](#addperiodictimer) and [example #2](examples).
+     *
+     * Calling this method on a timer instance that has not been added to this
+     * loop instance or on a timer that has already been cancelled has no effect.
+     *
+     * @param TimerInterface $timer The timer to cancel.
+     *
+     * @return void
+     */
+    public function cancelTimer(TimerInterface $timer);
+
+    /**
+     * Schedule a callback to be invoked on a future tick of the event loop.
+     *
+     * This works very much similar to timers with an interval of zero seconds,
+     * but does not require the overhead of scheduling a timer queue.
+     *
+     * The tick callback function MUST be able to accept zero parameters.
+     *
+     * The tick callback function MUST NOT throw an `Exception`.
+     * The return value of the tick callback function will be ignored and has
+     * no effect, so for performance reasons you're recommended to not return
+     * any excessive data structures.
+     *
+     * If you want to access any variables within your callback function, you
+     * can bind arbitrary data to a callback closure like this:
+     *
+     * ```php
+     * function hello($name, LoopInterface $loop)
+     * {
+     *     $loop->futureTick(function () use ($name) {
+     *         echo "hello $name\n";
+     *     });
+     * }
+     *
+     * hello('Tester', $loop);
+     * ```
+     *
+     * Unlike timers, tick callbacks are guaranteed to be executed in the order
+     * they are enqueued.
+     * Also, once a callback is enqueued, there's no way to cancel this operation.
+     *
+     * This is often used to break down bigger tasks into smaller steps (a form
+     * of cooperative multitasking).
+     *
+     * ```php
+     * $loop->futureTick(function () {
+     *     echo 'b';
+     * });
+     * $loop->futureTick(function () {
+     *     echo 'c';
+     * });
+     * echo 'a';
+     * ```
+     *
+     * See also [example #3](examples).
+     *
+     * @param callable $listener The callback to invoke.
+     *
+     * @return void
+     */
+    public function futureTick($listener);
+
+    /**
+     * Register a listener to be notified when a signal has been caught by this process.
+     *
+     * This is useful to catch user interrupt signals or shutdown signals from
+     * tools like `supervisor` or `systemd`.
+     *
+     * The listener callback function MUST be able to accept a single parameter,
+     * the signal added by this method or you MAY use a function which
+     * has no parameters at all.
+     *
+     * The listener callback function MUST NOT throw an `Exception`.
+     * The return value of the listener callback function will be ignored and has
+     * no effect, so for performance reasons you're recommended to not return
+     * any excessive data structures.
+     *
+     * ```php
+     * $loop->addSignal(SIGINT, function (int $signal) {
+     *     echo 'Caught user interrupt signal' . PHP_EOL;
+     * });
+     * ```
+     *
+     * See also [example #4](examples).
+     *
+     * Signaling is only available on Unix-like platform, Windows isn't
+     * supported due to operating system limitations.
+     * This method may throw a `BadMethodCallException` if signals aren't
+     * supported on this platform, for example when required extensions are
+     * missing.
+     *
+     * **Note: A listener can only be added once to the same signal, any
+     * attempts to add it more then once will be ignored.**
+     *
+     * @param int $signal
+     * @param callable $listener
+     *
+     * @throws \BadMethodCallException when signals aren't supported on this
+     *     platform, for example when required extensions are missing.
+     *
+     * @return void
+     */
+    public function addSignal($signal, $listener);
+
+    /**
+     * Removes a previously added signal listener.
+     *
+     * ```php
+     * $loop->removeSignal(SIGINT, $listener);
+     * ```
+     *
+     * Any attempts to remove listeners that aren't registered will be ignored.
+     *
+     * @param int $signal
+     * @param callable $listener
+     *
+     * @return void
+     */
+    public function removeSignal($signal, $listener);
+
+    /**
+     * Run the event loop until there are no more tasks to perform.
+     *
+     * For many applications, this method is the only directly visible
+     * invocation on the event loop.
+     * As a rule of thumb, it is usally recommended to attach everything to the
+     * same loop instance and then run the loop once at the bottom end of the
+     * application.
+     *
+     * ```php
+     * $loop->run();
+     * ```
+     *
+     * This method will keep the loop running until there are no more tasks
+     * to perform. In other words: This method will block until the last
+     * timer, stream and/or signal has been removed.
+     *
+     * Likewise, it is imperative to ensure the application actually invokes
+     * this method once. Adding listeners to the loop and missing to actually
+     * run it will result in the application exiting without actually waiting
+     * for any of the attached listeners.
+     *
+     * This method MUST NOT be called while the loop is already running.
+     * This method MAY be called more than once after it has explicity been
+     * [`stop()`ped](#stop) or after it automatically stopped because it
+     * previously did no longer have anything to do.
+     *
+     * @return void
+     */
+    public function run();
+
+    /**
+     * Instruct a running event loop to stop.
+     *
+     * This method is considered advanced usage and should be used with care.
+     * As a rule of thumb, it is usually recommended to let the loop stop
+     * only automatically when it no longer has anything to do.
+     *
+     * This method can be used to explicitly instruct the event loop to stop:
+     *
+     * ```php
+     * $loop->addTimer(3.0, function () use ($loop) {
+     *     $loop->stop();
+     * });
+     * ```
+     *
+     * Calling this method on a loop instance that is not currently running or
+     * on a loop instance that has already been stopped has no effect.
+     *
+     * @return void
+     */
+    public function stop();
+}
diff --git a/assets/php/vendor/react/event-loop/src/SignalsHandler.php b/assets/php/vendor/react/event-loop/src/SignalsHandler.php
new file mode 100644
index 0000000..523e1ca
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/SignalsHandler.php
@@ -0,0 +1,63 @@
+<?php
+
+namespace React\EventLoop;
+
+/**
+ * @internal
+ */
+final class SignalsHandler
+{
+    private $signals = array();
+
+    public function add($signal, $listener)
+    {
+        if (!isset($this->signals[$signal])) {
+            $this->signals[$signal] = array();
+        }
+
+        if (in_array($listener, $this->signals[$signal])) {
+            return;
+        }
+
+        $this->signals[$signal][] = $listener;
+    }
+
+    public function remove($signal, $listener)
+    {
+        if (!isset($this->signals[$signal])) {
+            return;
+        }
+
+        $index = \array_search($listener, $this->signals[$signal], true);
+        unset($this->signals[$signal][$index]);
+
+        if (isset($this->signals[$signal]) && \count($this->signals[$signal]) === 0) {
+            unset($this->signals[$signal]);
+        }
+    }
+
+    public function call($signal)
+    {
+        if (!isset($this->signals[$signal])) {
+            return;
+        }
+
+        foreach ($this->signals[$signal] as $listener) {
+            \call_user_func($listener, $signal);
+        }
+    }
+
+    public function count($signal)
+    {
+        if (!isset($this->signals[$signal])) {
+            return 0;
+        }
+
+        return \count($this->signals[$signal]);
+    }
+
+    public function isEmpty()
+    {
+        return !$this->signals;
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/src/StreamSelectLoop.php b/assets/php/vendor/react/event-loop/src/StreamSelectLoop.php
new file mode 100644
index 0000000..e82e9e4
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/StreamSelectLoop.php
@@ -0,0 +1,275 @@
+<?php
+
+namespace React\EventLoop;
+
+use React\EventLoop\Signal\Pcntl;
+use React\EventLoop\Tick\FutureTickQueue;
+use React\EventLoop\Timer\Timer;
+use React\EventLoop\Timer\Timers;
+
+/**
+ * A `stream_select()` based event loop.
+ *
+ * This uses the [`stream_select()`](http://php.net/manual/en/function.stream-select.php)
+ * function and is the only implementation which works out of the box with PHP.
+ *
+ * This event loop works out of the box on PHP 5.4 through PHP 7+ and HHVM.
+ * This means that no installation is required and this library works on all
+ * platforms and supported PHP versions.
+ * Accordingly, the [`Factory`](#factory) will use this event loop by default if
+ * you do not install any of the event loop extensions listed below.
+ *
+ * Under the hood, it does a simple `select` system call.
+ * This system call is limited to the maximum file descriptor number of
+ * `FD_SETSIZE` (platform dependent, commonly 1024) and scales with `O(m)`
+ * (`m` being the maximum file descriptor number passed).
+ * This means that you may run into issues when handling thousands of streams
+ * concurrently and you may want to look into using one of the alternative
+ * event loop implementations listed below in this case.
+ * If your use case is among the many common use cases that involve handling only
+ * dozens or a few hundred streams at once, then this event loop implementation
+ * performs really well.
+ *
+ * If you want to use signal handling (see also [`addSignal()`](#addsignal) below),
+ * this event loop implementation requires `ext-pcntl`.
+ * This extension is only available for Unix-like platforms and does not support
+ * Windows.
+ * It is commonly installed as part of many PHP distributions.
+ * If this extension is missing (or you're running on Windows), signal handling is
+ * not supported and throws a `BadMethodCallException` instead.
+ *
+ * This event loop is known to rely on wall-clock time to schedule future
+ * timers, because a monotonic time source is not available in PHP by default.
+ * While this does not affect many common use cases, this is an important
+ * distinction for programs that rely on a high time precision or on systems
+ * that are subject to discontinuous time adjustments (time jumps).
+ * This means that if you schedule a timer to trigger in 30s and then adjust
+ * your system time forward by 20s, the timer may trigger in 10s.
+ * See also [`addTimer()`](#addtimer) for more details.
+ *
+ * @link http://php.net/manual/en/function.stream-select.php
+ */
+final class StreamSelectLoop implements LoopInterface
+{
+    /** @internal */
+    const MICROSECONDS_PER_SECOND = 1000000;
+
+    private $futureTickQueue;
+    private $timers;
+    private $readStreams = array();
+    private $readListeners = array();
+    private $writeStreams = array();
+    private $writeListeners = array();
+    private $running;
+    private $pcntl = false;
+    private $signals;
+
+    public function __construct()
+    {
+        $this->futureTickQueue = new FutureTickQueue();
+        $this->timers = new Timers();
+        $this->pcntl = extension_loaded('pcntl');
+        $this->signals = new SignalsHandler();
+    }
+
+    public function addReadStream($stream, $listener)
+    {
+        $key = (int) $stream;
+
+        if (!isset($this->readStreams[$key])) {
+            $this->readStreams[$key] = $stream;
+            $this->readListeners[$key] = $listener;
+        }
+    }
+
+    public function addWriteStream($stream, $listener)
+    {
+        $key = (int) $stream;
+
+        if (!isset($this->writeStreams[$key])) {
+            $this->writeStreams[$key] = $stream;
+            $this->writeListeners[$key] = $listener;
+        }
+    }
+
+    public function removeReadStream($stream)
+    {
+        $key = (int) $stream;
+
+        unset(
+            $this->readStreams[$key],
+            $this->readListeners[$key]
+        );
+    }
+
+    public function removeWriteStream($stream)
+    {
+        $key = (int) $stream;
+
+        unset(
+            $this->writeStreams[$key],
+            $this->writeListeners[$key]
+        );
+    }
+
+    public function addTimer($interval, $callback)
+    {
+        $timer = new Timer($interval, $callback, false);
+
+        $this->timers->add($timer);
+
+        return $timer;
+    }
+
+    public function addPeriodicTimer($interval, $callback)
+    {
+        $timer = new Timer($interval, $callback, true);
+
+        $this->timers->add($timer);
+
+        return $timer;
+    }
+
+    public function cancelTimer(TimerInterface $timer)
+    {
+        $this->timers->cancel($timer);
+    }
+
+    public function futureTick($listener)
+    {
+        $this->futureTickQueue->add($listener);
+    }
+
+    public function addSignal($signal, $listener)
+    {
+        if ($this->pcntl === false) {
+            throw new \BadMethodCallException('Event loop feature "signals" isn\'t supported by the "StreamSelectLoop"');
+        }
+
+        $first = $this->signals->count($signal) === 0;
+        $this->signals->add($signal, $listener);
+
+        if ($first) {
+            \pcntl_signal($signal, array($this->signals, 'call'));
+        }
+    }
+
+    public function removeSignal($signal, $listener)
+    {
+        if (!$this->signals->count($signal)) {
+            return;
+        }
+
+        $this->signals->remove($signal, $listener);
+
+        if ($this->signals->count($signal) === 0) {
+            \pcntl_signal($signal, SIG_DFL);
+        }
+    }
+
+    public function run()
+    {
+        $this->running = true;
+
+        while ($this->running) {
+            $this->futureTickQueue->tick();
+
+            $this->timers->tick();
+
+            // Future-tick queue has pending callbacks ...
+            if (!$this->running || !$this->futureTickQueue->isEmpty()) {
+                $timeout = 0;
+
+            // There is a pending timer, only block until it is due ...
+            } elseif ($scheduledAt = $this->timers->getFirst()) {
+                $timeout = $scheduledAt - $this->timers->getTime();
+                if ($timeout < 0) {
+                    $timeout = 0;
+                } else {
+                    // Convert float seconds to int microseconds.
+                    // Ensure we do not exceed maximum integer size, which may
+                    // cause the loop to tick once every ~35min on 32bit systems.
+                    $timeout *= self::MICROSECONDS_PER_SECOND;
+                    $timeout = $timeout > PHP_INT_MAX ? PHP_INT_MAX : (int)$timeout;
+                }
+
+            // The only possible event is stream or signal activity, so wait forever ...
+            } elseif ($this->readStreams || $this->writeStreams || !$this->signals->isEmpty()) {
+                $timeout = null;
+
+            // There's nothing left to do ...
+            } else {
+                break;
+            }
+
+            $this->waitForStreamActivity($timeout);
+        }
+    }
+
+    public function stop()
+    {
+        $this->running = false;
+    }
+
+    /**
+     * Wait/check for stream activity, or until the next timer is due.
+     *
+     * @param integer|null $timeout Activity timeout in microseconds, or null to wait forever.
+     */
+    private function waitForStreamActivity($timeout)
+    {
+        $read  = $this->readStreams;
+        $write = $this->writeStreams;
+
+        $available = $this->streamSelect($read, $write, $timeout);
+        if ($this->pcntl) {
+            \pcntl_signal_dispatch();
+        }
+        if (false === $available) {
+            // if a system call has been interrupted,
+            // we cannot rely on it's outcome
+            return;
+        }
+
+        foreach ($read as $stream) {
+            $key = (int) $stream;
+
+            if (isset($this->readListeners[$key])) {
+                call_user_func($this->readListeners[$key], $stream);
+            }
+        }
+
+        foreach ($write as $stream) {
+            $key = (int) $stream;
+
+            if (isset($this->writeListeners[$key])) {
+                call_user_func($this->writeListeners[$key], $stream);
+            }
+        }
+    }
+
+    /**
+     * Emulate a stream_select() implementation that does not break when passed
+     * empty stream arrays.
+     *
+     * @param array        &$read   An array of read streams to select upon.
+     * @param array        &$write  An array of write streams to select upon.
+     * @param integer|null $timeout Activity timeout in microseconds, or null to wait forever.
+     *
+     * @return integer|false The total number of streams that are ready for read/write.
+     * Can return false if stream_select() is interrupted by a signal.
+     */
+    private function streamSelect(array &$read, array &$write, $timeout)
+    {
+        if ($read || $write) {
+            $except = null;
+
+            // suppress warnings that occur, when stream_select is interrupted by a signal
+            return @stream_select($read, $write, $except, $timeout === null ? null : 0, $timeout);
+        }
+
+        $timeout && usleep($timeout);
+
+        return 0;
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/src/Tick/FutureTickQueue.php b/assets/php/vendor/react/event-loop/src/Tick/FutureTickQueue.php
new file mode 100644
index 0000000..c79afc5
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/Tick/FutureTickQueue.php
@@ -0,0 +1,60 @@
+<?php
+
+namespace React\EventLoop\Tick;
+
+use SplQueue;
+
+/**
+ * A tick queue implementation that can hold multiple callback functions
+ *
+ * This class should only be used internally, see LoopInterface instead.
+ *
+ * @see LoopInterface
+ * @internal
+ */
+final class FutureTickQueue
+{
+    private $queue;
+
+    public function __construct()
+    {
+        $this->queue = new SplQueue();
+    }
+
+    /**
+     * Add a callback to be invoked on a future tick of the event loop.
+     *
+     * Callbacks are guaranteed to be executed in the order they are enqueued.
+     *
+     * @param callable $listener The callback to invoke.
+     */
+    public function add($listener)
+    {
+        $this->queue->enqueue($listener);
+    }
+
+    /**
+     * Flush the callback queue.
+     */
+    public function tick()
+    {
+        // Only invoke as many callbacks as were on the queue when tick() was called.
+        $count = $this->queue->count();
+
+        while ($count--) {
+            call_user_func(
+                $this->queue->dequeue()
+            );
+        }
+    }
+
+    /**
+     * Check if the next tick queue is empty.
+     *
+     * @return boolean
+     */
+    public function isEmpty()
+    {
+        return $this->queue->isEmpty();
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/src/Timer/Timer.php b/assets/php/vendor/react/event-loop/src/Timer/Timer.php
new file mode 100644
index 0000000..da3602a
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/Timer/Timer.php
@@ -0,0 +1,55 @@
+<?php
+
+namespace React\EventLoop\Timer;
+
+use React\EventLoop\TimerInterface;
+
+/**
+ * The actual connection implementation for TimerInterface
+ *
+ * This class should only be used internally, see TimerInterface instead.
+ *
+ * @see TimerInterface
+ * @internal
+ */
+final class Timer implements TimerInterface
+{
+    const MIN_INTERVAL = 0.000001;
+
+    private $interval;
+    private $callback;
+    private $periodic;
+
+    /**
+     * Constructor initializes the fields of the Timer
+     *
+     * @param float         $interval The interval after which this timer will execute, in seconds
+     * @param callable      $callback The callback that will be executed when this timer elapses
+     * @param bool          $periodic Whether the time is periodic
+     */
+    public function __construct($interval, $callback, $periodic = false)
+    {
+        if ($interval < self::MIN_INTERVAL) {
+            $interval = self::MIN_INTERVAL;
+        }
+
+        $this->interval = (float) $interval;
+        $this->callback = $callback;
+        $this->periodic = (bool) $periodic;
+    }
+
+    public function getInterval()
+    {
+        return $this->interval;
+    }
+
+    public function getCallback()
+    {
+        return $this->callback;
+    }
+
+    public function isPeriodic()
+    {
+        return $this->periodic;
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/src/Timer/Timers.php b/assets/php/vendor/react/event-loop/src/Timer/Timers.php
new file mode 100644
index 0000000..17bbdac
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/Timer/Timers.php
@@ -0,0 +1,109 @@
+<?php
+
+namespace React\EventLoop\Timer;
+
+use React\EventLoop\TimerInterface;
+use SplObjectStorage;
+use SplPriorityQueue;
+
+/**
+ * A scheduler implementation that can hold multiple timer instances
+ *
+ * This class should only be used internally, see TimerInterface instead.
+ *
+ * @see TimerInterface
+ * @internal
+ */
+final class Timers
+{
+    private $time;
+    private $timers;
+    private $scheduler;
+
+    public function __construct()
+    {
+        $this->timers = new SplObjectStorage();
+        $this->scheduler = new SplPriorityQueue();
+    }
+
+    public function updateTime()
+    {
+        return $this->time = microtime(true);
+    }
+
+    public function getTime()
+    {
+        return $this->time ?: $this->updateTime();
+    }
+
+    public function add(TimerInterface $timer)
+    {
+        $interval = $timer->getInterval();
+        $scheduledAt = $interval + microtime(true);
+
+        $this->timers->attach($timer, $scheduledAt);
+        $this->scheduler->insert($timer, -$scheduledAt);
+    }
+
+    public function contains(TimerInterface $timer)
+    {
+        return $this->timers->contains($timer);
+    }
+
+    public function cancel(TimerInterface $timer)
+    {
+        $this->timers->detach($timer);
+    }
+
+    public function getFirst()
+    {
+        while ($this->scheduler->count()) {
+            $timer = $this->scheduler->top();
+
+            if ($this->timers->contains($timer)) {
+                return $this->timers[$timer];
+            }
+
+            $this->scheduler->extract();
+        }
+
+        return null;
+    }
+
+    public function isEmpty()
+    {
+        return count($this->timers) === 0;
+    }
+
+    public function tick()
+    {
+        $time = $this->updateTime();
+        $timers = $this->timers;
+        $scheduler = $this->scheduler;
+
+        while (!$scheduler->isEmpty()) {
+            $timer = $scheduler->top();
+
+            if (!isset($timers[$timer])) {
+                $scheduler->extract();
+                $timers->detach($timer);
+
+                continue;
+            }
+
+            if ($timers[$timer] >= $time) {
+                break;
+            }
+
+            $scheduler->extract();
+            call_user_func($timer->getCallback(), $timer);
+
+            if ($timer->isPeriodic() && isset($timers[$timer])) {
+                $timers[$timer] = $scheduledAt = $timer->getInterval() + $time;
+                $scheduler->insert($timer, -$scheduledAt);
+            } else {
+                $timers->detach($timer);
+            }
+        }
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/src/TimerInterface.php b/assets/php/vendor/react/event-loop/src/TimerInterface.php
new file mode 100644
index 0000000..cdcf773
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/src/TimerInterface.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace React\EventLoop;
+
+interface TimerInterface
+{
+    /**
+     * Get the interval after which this timer will execute, in seconds
+     *
+     * @return float
+     */
+    public function getInterval();
+
+    /**
+     * Get the callback that will be executed when this timer elapses
+     *
+     * @return callable
+     */
+    public function getCallback();
+
+    /**
+     * Determine whether the time is periodic
+     *
+     * @return bool
+     */
+    public function isPeriodic();
+}
diff --git a/assets/php/vendor/react/event-loop/tests/AbstractLoopTest.php b/assets/php/vendor/react/event-loop/tests/AbstractLoopTest.php
new file mode 100644
index 0000000..dbfc91e
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/tests/AbstractLoopTest.php
@@ -0,0 +1,621 @@
+<?php
+
+namespace React\Tests\EventLoop;
+
+abstract class AbstractLoopTest extends TestCase
+{
+    /**
+     * @var \React\EventLoop\LoopInterface
+     */
+    protected $loop;
+
+    private $tickTimeout;
+
+    const PHP_DEFAULT_CHUNK_SIZE = 8192;
+
+    public function setUp()
+    {
+        // It's a timeout, don't set it too low. Travis and other CI systems are slow.
+        $this->tickTimeout = 0.02;
+        $this->loop = $this->createLoop();
+    }
+
+    abstract public function createLoop();
+
+    public function createSocketPair()
+    {
+        $domain = (DIRECTORY_SEPARATOR === '\\') ? STREAM_PF_INET : STREAM_PF_UNIX;
+        $sockets = stream_socket_pair($domain, STREAM_SOCK_STREAM, STREAM_IPPROTO_IP);
+
+        foreach ($sockets as $socket) {
+            if (function_exists('stream_set_read_buffer')) {
+                stream_set_read_buffer($socket, 0);
+            }
+        }
+
+        return $sockets;
+    }
+
+    public function testAddReadStream()
+    {
+        list ($input, $output) = $this->createSocketPair();
+
+        $this->loop->addReadStream($input, $this->expectCallableExactly(2));
+
+        fwrite($output, "foo\n");
+        $this->tickLoop($this->loop);
+
+        fwrite($output, "bar\n");
+        $this->tickLoop($this->loop);
+    }
+
+    public function testAddReadStreamIgnoresSecondCallable()
+    {
+        list ($input, $output) = $this->createSocketPair();
+
+        $this->loop->addReadStream($input, $this->expectCallableExactly(2));
+        $this->loop->addReadStream($input, $this->expectCallableNever());
+
+        fwrite($output, "foo\n");
+        $this->tickLoop($this->loop);
+
+        fwrite($output, "bar\n");
+        $this->tickLoop($this->loop);
+    }
+
+    public function testAddReadStreamReceivesDataFromStreamReference()
+    {
+        $this->received = '';
+        $this->subAddReadStreamReceivesDataFromStreamReference();
+        $this->assertEquals('', $this->received);
+
+        $this->assertRunFasterThan($this->tickTimeout * 2);
+        $this->assertEquals('[hello]X', $this->received);
+    }
+
+    /**
+     * Helper for above test. This happens in another helper method to verify
+     * the loop keeps track of assigned stream resources (refcount).
+     */
+    private function subAddReadStreamReceivesDataFromStreamReference()
+    {
+        list ($input, $output) = $this->createSocketPair();
+
+        fwrite($input, 'hello');
+        fclose($input);
+
+        $loop = $this->loop;
+        $received =& $this->received;
+        $loop->addReadStream($output, function ($output) use ($loop, &$received) {
+            $chunk = fread($output, 1024);
+            if ($chunk === '') {
+                $received .= 'X';
+                $loop->removeReadStream($output);
+                fclose($output);
+            } else {
+                $received .= '[' . $chunk . ']';
+            }
+        });
+    }
+
+    public function testAddWriteStream()
+    {
+        list ($input) = $this->createSocketPair();
+
+        $this->loop->addWriteStream($input, $this->expectCallableExactly(2));
+        $this->tickLoop($this->loop);
+        $this->tickLoop($this->loop);
+    }
+
+    public function testAddWriteStreamIgnoresSecondCallable()
+    {
+        list ($input) = $this->createSocketPair();
+
+        $this->loop->addWriteStream($input, $this->expectCallableExactly(2));
+        $this->loop->addWriteStream($input, $this->expectCallableNever());
+        $this->tickLoop($this->loop);
+        $this->tickLoop($this->loop);
+    }
+
+    public function testRemoveReadStreamInstantly()
+    {
+        list ($input, $output) = $this->createSocketPair();
+
+        $this->loop->addReadStream($input, $this->expectCallableNever());
+        $this->loop->removeReadStream($input);
+
+        fwrite($output, "bar\n");
+        $this->tickLoop($this->loop);
+    }
+
+    public function testRemoveReadStreamAfterReading()
+    {
+        list ($input, $output) = $this->createSocketPair();
+
+        $this->loop->addReadStream($input, $this->expectCallableOnce());
+
+        fwrite($output, "foo\n");
+        $this->tickLoop($this->loop);
+
+        $this->loop->removeReadStream($input);
+
+        fwrite($output, "bar\n");
+        $this->tickLoop($this->loop);
+    }
+
+    public function testRemoveWriteStreamInstantly()
+    {
+        list ($input) = $this->createSocketPair();
+
+        $this->loop->addWriteStream($input, $this->expectCallableNever());
+        $this->loop->removeWriteStream($input);
+        $this->tickLoop($this->loop);
+    }
+
+    public function testRemoveWriteStreamAfterWriting()
+    {
+        list ($input) = $this->createSocketPair();
+
+        $this->loop->addWriteStream($input, $this->expectCallableOnce());
+        $this->tickLoop($this->loop);
+
+        $this->loop->removeWriteStream($input);
+        $this->tickLoop($this->loop);
+    }
+
+    public function testRemoveStreamForReadOnly()
+    {
+        list ($input, $output) = $this->createSocketPair();
+
+        $this->loop->addReadStream($input, $this->expectCallableNever());
+        $this->loop->addWriteStream($output, $this->expectCallableOnce());
+        $this->loop->removeReadStream($input);
+
+        fwrite($output, "foo\n");
+        $this->tickLoop($this->loop);
+    }
+
+    public function testRemoveStreamForWriteOnly()
+    {
+        list ($input, $output) = $this->createSocketPair();
+
+        fwrite($output, "foo\n");
+
+        $this->loop->addReadStream($input, $this->expectCallableOnce());
+        $this->loop->addWriteStream($output, $this->expectCallableNever());
+        $this->loop->removeWriteStream($output);
+
+        $this->tickLoop($this->loop);
+    }
+
+    public function testRemoveReadAndWriteStreamFromLoopOnceResourceClosesEndsLoop()
+    {
+        list($stream, $other) = $this->createSocketPair();
+        stream_set_blocking($stream, false);
+        stream_set_blocking($other, false);
+
+        // dummy writable handler
+        $this->loop->addWriteStream($stream, function () { });
+
+        // remove stream when the stream is readable (closes)
+        $loop = $this->loop;
+        $loop->addReadStream($stream, function ($stream) use ($loop) {
+            $loop->removeReadStream($stream);
+            $loop->removeWriteStream($stream);
+            fclose($stream);
+        });
+
+        // close other side
+        fclose($other);
+
+        $this->assertRunFasterThan($this->tickTimeout);
+    }
+
+    public function testRemoveReadAndWriteStreamFromLoopOnceResourceClosesOnEndOfFileEndsLoop()
+    {
+        list($stream, $other) = $this->createSocketPair();
+        stream_set_blocking($stream, false);
+        stream_set_blocking($other, false);
+
+        // dummy writable handler
+        $this->loop->addWriteStream($stream, function () { });
+
+        // remove stream when the stream is readable (closes)
+        $loop = $this->loop;
+        $loop->addReadStream($stream, function ($stream) use ($loop) {
+            $data = fread($stream, 1024);
+            if ($data !== '') {
+                return;
+            }
+
+            $loop->removeReadStream($stream);
+            $loop->removeWriteStream($stream);
+            fclose($stream);
+        });
+
+        // send data and close stream
+        fwrite($other, str_repeat('.', static::PHP_DEFAULT_CHUNK_SIZE));
+        $this->loop->addTimer(0.01, function () use ($other) {
+            fclose($other);
+        });
+
+        $this->assertRunFasterThan(0.1);
+    }
+
+    public function testRemoveReadAndWriteStreamFromLoopWithClosingResourceEndsLoop()
+    {
+        // get only one part of the pair to ensure the other side will close immediately
+        list($stream) = $this->createSocketPair();
+        stream_set_blocking($stream, false);
+
+        // dummy writable handler
+        $this->loop->addWriteStream($stream, function () { });
+
+        // remove stream when the stream is readable (closes)
+        $loop = $this->loop;
+        $loop->addReadStream($stream, function ($stream) use ($loop) {
+            $loop->removeReadStream($stream);
+            $loop->removeWriteStream($stream);
+            fclose($stream);
+        });
+
+        $this->assertRunFasterThan($this->tickTimeout);
+    }
+
+    public function testRemoveInvalid()
+    {
+        list ($stream) = $this->createSocketPair();
+
+        // remove a valid stream from the event loop that was never added in the first place
+        $this->loop->removeReadStream($stream);
+        $this->loop->removeWriteStream($stream);
+
+        $this->assertTrue(true);
+    }
+
+    /** @test */
+    public function emptyRunShouldSimplyReturn()
+    {
+        $this->assertRunFasterThan($this->tickTimeout);
+    }
+
+    /** @test */
+    public function runShouldReturnWhenNoMoreFds()
+    {
+        list ($input, $output) = $this->createSocketPair();
+
+        $loop = $this->loop;
+        $this->loop->addReadStream($input, function ($stream) use ($loop) {
+            $loop->removeReadStream($stream);
+        });
+
+        fwrite($output, "foo\n");
+
+        $this->assertRunFasterThan($this->tickTimeout * 2);
+    }
+
+    /** @test */
+    public function stopShouldStopRunningLoop()
+    {
+        list ($input, $output) = $this->createSocketPair();
+
+        $loop = $this->loop;
+        $this->loop->addReadStream($input, function ($stream) use ($loop) {
+            $loop->stop();
+        });
+
+        fwrite($output, "foo\n");
+
+        $this->assertRunFasterThan($this->tickTimeout * 2);
+    }
+
+    public function testStopShouldPreventRunFromBlocking()
+    {
+        $that = $this;
+        $this->loop->addTimer(
+            1,
+            function () use ($that) {
+                $that->fail('Timer was executed.');
+            }
+        );
+
+        $loop = $this->loop;
+        $this->loop->futureTick(
+            function () use ($loop) {
+                $loop->stop();
+            }
+        );
+
+        $this->assertRunFasterThan($this->tickTimeout * 2);
+    }
+
+    public function testIgnoreRemovedCallback()
+    {
+        // two independent streams, both should be readable right away
+        list ($input1, $output1) = $this->createSocketPair();
+        list ($input2, $output2) = $this->createSocketPair();
+
+        $called = false;
+
+        $loop = $this->loop;
+        $loop->addReadStream($input1, function ($stream) use (& $called, $loop, $input2) {
+            // stream1 is readable, remove stream2 as well => this will invalidate its callback
+            $loop->removeReadStream($stream);
+            $loop->removeReadStream($input2);
+
+            $called = true;
+        });
+
+        // this callback would have to be called as well, but the first stream already removed us
+        $that = $this;
+        $loop->addReadStream($input2, function () use (& $called, $that) {
+            if ($called) {
+                $that->fail('Callback 2 must not be called after callback 1 was called');
+            }
+        });
+
+        fwrite($output1, "foo\n");
+        fwrite($output2, "foo\n");
+
+        $loop->run();
+
+        $this->assertTrue($called);
+    }
+
+    public function testFutureTickEventGeneratedByFutureTick()
+    {
+        $loop = $this->loop;
+        $this->loop->futureTick(
+            function () use ($loop) {
+                $loop->futureTick(
+                    function () {
+                        echo 'future-tick' . PHP_EOL;
+                    }
+                );
+            }
+        );
+
+        $this->expectOutputString('future-tick' . PHP_EOL);
+
+        $this->loop->run();
+    }
+
+    public function testFutureTick()
+    {
+        $called = false;
+
+        $callback = function () use (&$called) {
+            $called = true;
+        };
+
+        $this->loop->futureTick($callback);
+
+        $this->assertFalse($called);
+
+        $this->tickLoop($this->loop);
+
+        $this->assertTrue($called);
+    }
+
+    public function testFutureTickFiresBeforeIO()
+    {
+        list ($stream) = $this->createSocketPair();
+
+        $this->loop->addWriteStream(
+            $stream,
+            function () {
+                echo 'stream' . PHP_EOL;
+            }
+        );
+
+        $this->loop->futureTick(
+            function () {
+                echo 'future-tick' . PHP_EOL;
+            }
+        );
+
+        $this->expectOutputString('future-tick' . PHP_EOL . 'stream' . PHP_EOL);
+
+        $this->tickLoop($this->loop);
+    }
+
+    public function testRecursiveFutureTick()
+    {
+        list ($stream) = $this->createSocketPair();
+
+        $loop = $this->loop;
+        $this->loop->addWriteStream(
+            $stream,
+            function () use ($stream, $loop) {
+                echo 'stream' . PHP_EOL;
+                $loop->removeWriteStream($stream);
+            }
+        );
+
+        $this->loop->futureTick(
+            function () use ($loop) {
+                echo 'future-tick-1' . PHP_EOL;
+                $loop->futureTick(
+                    function () {
+                        echo 'future-tick-2' . PHP_EOL;
+                    }
+                );
+            }
+        );
+
+        $this->expectOutputString('future-tick-1' . PHP_EOL . 'stream' . PHP_EOL . 'future-tick-2' . PHP_EOL);
+
+        $this->loop->run();
+    }
+
+    public function testRunWaitsForFutureTickEvents()
+    {
+        list ($stream) = $this->createSocketPair();
+
+        $loop = $this->loop;
+        $this->loop->addWriteStream(
+            $stream,
+            function () use ($stream, $loop) {
+                $loop->removeWriteStream($stream);
+                $loop->futureTick(
+                    function () {
+                        echo 'future-tick' . PHP_EOL;
+                    }
+                );
+            }
+        );
+
+        $this->expectOutputString('future-tick' . PHP_EOL);
+
+        $this->loop->run();
+    }
+
+    public function testFutureTickEventGeneratedByTimer()
+    {
+        $loop = $this->loop;
+        $this->loop->addTimer(
+            0.001,
+            function () use ($loop) {
+                $loop->futureTick(
+                    function () {
+                        echo 'future-tick' . PHP_EOL;
+                    }
+                );
+            }
+        );
+
+        $this->expectOutputString('future-tick' . PHP_EOL);
+
+        $this->loop->run();
+    }
+
+    public function testRemoveSignalNotRegisteredIsNoOp()
+    {
+        $this->loop->removeSignal(SIGINT, function () { });
+        $this->assertTrue(true);
+    }
+
+    public function testSignal()
+    {
+        if (!function_exists('posix_kill') || !function_exists('posix_getpid')) {
+            $this->markTestSkipped('Signal test skipped because functions "posix_kill" and "posix_getpid" are missing.');
+        }
+
+        $called = false;
+        $calledShouldNot = true;
+
+        $timer = $this->loop->addPeriodicTimer(1, function () {});
+
+        $this->loop->addSignal(SIGUSR2, $func2 = function () use (&$calledShouldNot) {
+            $calledShouldNot = false;
+        });
+
+        $loop = $this->loop;
+        $this->loop->addSignal(SIGUSR1, $func1 = function () use (&$func1, &$func2, &$called, $timer, $loop) {
+            $called = true;
+            $loop->removeSignal(SIGUSR1, $func1);
+            $loop->removeSignal(SIGUSR2, $func2);
+            $loop->cancelTimer($timer);
+        });
+
+        $this->loop->futureTick(function () {
+            posix_kill(posix_getpid(), SIGUSR1);
+        });
+
+        $this->loop->run();
+
+        $this->assertTrue($called);
+        $this->assertTrue($calledShouldNot);
+    }
+
+    public function testSignalMultipleUsagesForTheSameListener()
+    {
+        $funcCallCount = 0;
+        $func = function () use (&$funcCallCount) {
+            $funcCallCount++;
+        };
+        $this->loop->addTimer(1, function () {});
+
+        $this->loop->addSignal(SIGUSR1, $func);
+        $this->loop->addSignal(SIGUSR1, $func);
+
+        $this->loop->addTimer(0.4, function () {
+            posix_kill(posix_getpid(), SIGUSR1);
+        });
+        $loop = $this->loop;
+        $this->loop->addTimer(0.9, function () use (&$func, $loop) {
+            $loop->removeSignal(SIGUSR1, $func);
+        });
+
+        $this->loop->run();
+
+        $this->assertSame(1, $funcCallCount);
+    }
+
+    public function testSignalsKeepTheLoopRunning()
+    {
+        $loop = $this->loop;
+        $function = function () {};
+        $this->loop->addSignal(SIGUSR1, $function);
+        $this->loop->addTimer(1.5, function () use ($function, $loop) {
+            $loop->removeSignal(SIGUSR1, $function);
+            $loop->stop();
+        });
+
+        $this->assertRunSlowerThan(1.5);
+    }
+
+    public function testSignalsKeepTheLoopRunningAndRemovingItStopsTheLoop()
+    {
+        $loop = $this->loop;
+        $function = function () {};
+        $this->loop->addSignal(SIGUSR1, $function);
+        $this->loop->addTimer(1.5, function () use ($function, $loop) {
+            $loop->removeSignal(SIGUSR1, $function);
+        });
+
+        $this->assertRunFasterThan(1.6);
+    }
+
+    public function testTimerIntervalCanBeFarInFuture()
+    {
+        // get only one part of the pair to ensure the other side will close immediately
+        list($stream) = $this->createSocketPair();
+
+        // start a timer very far in the future
+        $timer = $this->loop->addTimer(PHP_INT_MAX, function () { });
+
+        // remove stream and timer when the stream is readable (closes)
+        $loop = $this->loop;
+        $this->loop->addReadStream($stream, function ($stream) use ($timer, $loop) {
+            $loop->removeReadStream($stream);
+            $loop->cancelTimer($timer);
+        });
+
+        $this->assertRunFasterThan($this->tickTimeout);
+    }
+
+    private function assertRunSlowerThan($minInterval)
+    {
+        $start = microtime(true);
+
+        $this->loop->run();
+
+        $end = microtime(true);
+        $interval = $end - $start;
+
+        $this->assertLessThan($interval, $minInterval);
+    }
+
+    private function assertRunFasterThan($maxInterval)
+    {
+        $start = microtime(true);
+
+        $this->loop->run();
+
+        $end = microtime(true);
+        $interval = $end - $start;
+
+        $this->assertLessThan($maxInterval, $interval);
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/tests/CallableStub.php b/assets/php/vendor/react/event-loop/tests/CallableStub.php
new file mode 100644
index 0000000..913d403
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/tests/CallableStub.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace React\Tests\EventLoop;
+
+class CallableStub
+{
+    public function __invoke()
+    {
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/tests/ExtEvLoopTest.php b/assets/php/vendor/react/event-loop/tests/ExtEvLoopTest.php
new file mode 100644
index 0000000..ab41c9f
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/tests/ExtEvLoopTest.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace React\Tests\EventLoop;
+
+use React\EventLoop\ExtEvLoop;
+
+class ExtEvLoopTest extends AbstractLoopTest
+{
+    public function createLoop()
+    {
+        if (!class_exists('EvLoop')) {
+            $this->markTestSkipped('ExtEvLoop tests skipped because ext-ev extension is not installed.');
+        }
+
+        return new ExtEvLoop();
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/tests/ExtEventLoopTest.php b/assets/php/vendor/react/event-loop/tests/ExtEventLoopTest.php
new file mode 100644
index 0000000..2f88d18
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/tests/ExtEventLoopTest.php
@@ -0,0 +1,84 @@
+<?php
+
+namespace React\Tests\EventLoop;
+
+use React\EventLoop\ExtEventLoop;
+
+class ExtEventLoopTest extends AbstractLoopTest
+{
+    public function createLoop($readStreamCompatible = false)
+    {
+        if ('Linux' === PHP_OS && !extension_loaded('posix')) {
+            $this->markTestSkipped('libevent tests skipped on linux due to linux epoll issues.');
+        }
+
+        if (!extension_loaded('event')) {
+            $this->markTestSkipped('ext-event tests skipped because ext-event is not installed.');
+        }
+
+        return new ExtEventLoop();
+    }
+
+    public function createStream()
+    {
+        // Use a FIFO on linux to get around lack of support for disk-based file
+        // descriptors when using the EPOLL back-end.
+        if ('Linux' === PHP_OS) {
+            $this->fifoPath = tempnam(sys_get_temp_dir(), 'react-');
+
+            unlink($this->fifoPath);
+
+            posix_mkfifo($this->fifoPath, 0600);
+
+            $stream = fopen($this->fifoPath, 'r+');
+
+        // ext-event (as of 1.8.1) does not yet support in-memory temporary
+        // streams. Setting maxmemory:0 and performing a write forces PHP to
+        // back this temporary stream with a real file.
+        //
+        // This problem is mentioned at https://bugs.php.net/bug.php?id=64652&edit=3
+        // but remains unresolved (despite that issue being closed).
+        } else {
+            $stream = fopen('php://temp/maxmemory:0', 'r+');
+
+            fwrite($stream, 'x');
+            ftruncate($stream, 0);
+        }
+
+        return $stream;
+    }
+
+    public function writeToStream($stream, $content)
+    {
+        if ('Linux' !== PHP_OS) {
+            return parent::writeToStream($stream, $content);
+        }
+
+        fwrite($stream, $content);
+    }
+
+    /**
+     * @group epoll-readable-error
+     */
+    public function testCanUseReadableStreamWithFeatureFds()
+    {
+        if (PHP_VERSION_ID > 70000) {
+            $this->markTestSkipped('Memory stream not supported');
+        }
+
+        $this->loop = $this->createLoop(true);
+
+        $input = fopen('php://temp/maxmemory:0', 'r+');
+
+        fwrite($input, 'x');
+        ftruncate($input, 0);
+
+        $this->loop->addReadStream($input, $this->expectCallableExactly(2));
+
+        fwrite($input, "foo\n");
+        $this->tickLoop($this->loop);
+
+        fwrite($input, "bar\n");
+        $this->tickLoop($this->loop);
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/tests/ExtLibevLoopTest.php b/assets/php/vendor/react/event-loop/tests/ExtLibevLoopTest.php
new file mode 100644
index 0000000..19a5e87
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/tests/ExtLibevLoopTest.php
@@ -0,0 +1,22 @@
+<?php
+
+namespace React\Tests\EventLoop;
+
+use React\EventLoop\ExtLibevLoop;
+
+class ExtLibevLoopTest extends AbstractLoopTest
+{
+    public function createLoop()
+    {
+        if (!class_exists('libev\EventLoop')) {
+            $this->markTestSkipped('libev tests skipped because ext-libev is not installed.');
+        }
+
+        return new ExtLibevLoop();
+    }
+
+    public function testLibEvConstructor()
+    {
+        $loop = new ExtLibevLoop();
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/tests/ExtLibeventLoopTest.php b/assets/php/vendor/react/event-loop/tests/ExtLibeventLoopTest.php
new file mode 100644
index 0000000..8497065
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/tests/ExtLibeventLoopTest.php
@@ -0,0 +1,58 @@
+<?php
+
+namespace React\Tests\EventLoop;
+
+use React\EventLoop\ExtLibeventLoop;
+
+class ExtLibeventLoopTest extends AbstractLoopTest
+{
+    private $fifoPath;
+
+    public function createLoop()
+    {
+        if ('Linux' === PHP_OS && !extension_loaded('posix')) {
+            $this->markTestSkipped('libevent tests skipped on linux due to linux epoll issues.');
+        }
+
+        if (!function_exists('event_base_new')) {
+            $this->markTestSkipped('libevent tests skipped because ext-libevent is not installed.');
+        }
+
+        return new ExtLibeventLoop();
+    }
+
+    public function tearDown()
+    {
+        if (file_exists($this->fifoPath)) {
+            unlink($this->fifoPath);
+        }
+    }
+
+    public function createStream()
+    {
+        if ('Linux' !== PHP_OS) {
+            return parent::createStream();
+        }
+
+        $this->fifoPath = tempnam(sys_get_temp_dir(), 'react-');
+
+        unlink($this->fifoPath);
+
+        // Use a FIFO on linux to get around lack of support for disk-based file
+        // descriptors when using the EPOLL back-end.
+        posix_mkfifo($this->fifoPath, 0600);
+
+        $stream = fopen($this->fifoPath, 'r+');
+
+        return $stream;
+    }
+
+    public function writeToStream($stream, $content)
+    {
+        if ('Linux' !== PHP_OS) {
+            return parent::writeToStream($stream, $content);
+        }
+
+        fwrite($stream, $content);
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/tests/SignalsHandlerTest.php b/assets/php/vendor/react/event-loop/tests/SignalsHandlerTest.php
new file mode 100644
index 0000000..f8b7df3
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/tests/SignalsHandlerTest.php
@@ -0,0 +1,55 @@
+<?php
+
+namespace React\Tests\EventLoop;
+
+use React\EventLoop\SignalsHandler;
+
+final class SignalsHandlerTest extends TestCase
+{
+    public function testEmittedEventsAndCallHandling()
+    {
+        $callCount = 0;
+        $func = function () use (&$callCount) {
+            $callCount++;
+        };
+        $signals = new SignalsHandler();
+
+        $this->assertSame(0, $callCount);
+
+        $signals->add(SIGUSR1, $func);
+        $this->assertSame(0, $callCount);
+
+        $signals->add(SIGUSR1, $func);
+        $this->assertSame(0, $callCount);
+
+        $signals->add(SIGUSR1, $func);
+        $this->assertSame(0, $callCount);
+
+        $signals->call(SIGUSR1);
+        $this->assertSame(1, $callCount);
+
+        $signals->add(SIGUSR2, $func);
+        $this->assertSame(1, $callCount);
+
+        $signals->add(SIGUSR2, $func);
+        $this->assertSame(1, $callCount);
+
+        $signals->call(SIGUSR2);
+        $this->assertSame(2, $callCount);
+
+        $signals->remove(SIGUSR2, $func);
+        $this->assertSame(2, $callCount);
+
+        $signals->remove(SIGUSR2, $func);
+        $this->assertSame(2, $callCount);
+
+        $signals->call(SIGUSR2);
+        $this->assertSame(2, $callCount);
+
+        $signals->remove(SIGUSR1, $func);
+        $this->assertSame(2, $callCount);
+
+        $signals->call(SIGUSR1);
+        $this->assertSame(2, $callCount);
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/tests/StreamSelectLoopTest.php b/assets/php/vendor/react/event-loop/tests/StreamSelectLoopTest.php
new file mode 100644
index 0000000..bd19e1c
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/tests/StreamSelectLoopTest.php
@@ -0,0 +1,148 @@
+<?php
+
+namespace React\Tests\EventLoop;
+
+use React\EventLoop\LoopInterface;
+use React\EventLoop\StreamSelectLoop;
+
+class StreamSelectLoopTest extends AbstractLoopTest
+{
+    protected function tearDown()
+    {
+        parent::tearDown();
+        if (strncmp($this->getName(false), 'testSignal', 10) === 0 && extension_loaded('pcntl')) {
+            $this->resetSignalHandlers();
+        }
+    }
+
+    public function createLoop()
+    {
+        return new StreamSelectLoop();
+    }
+
+    public function testStreamSelectTimeoutEmulation()
+    {
+        $this->loop->addTimer(
+            0.05,
+            $this->expectCallableOnce()
+        );
+
+        $start = microtime(true);
+
+        $this->loop->run();
+
+        $end = microtime(true);
+        $interval = $end - $start;
+
+        $this->assertGreaterThan(0.04, $interval);
+    }
+
+    public function signalProvider()
+    {
+        return array(
+            array('SIGUSR1'),
+            array('SIGHUP'),
+            array('SIGTERM'),
+        );
+    }
+
+    /**
+     * Test signal interrupt when no stream is attached to the loop
+     * @dataProvider signalProvider
+     */
+    public function testSignalInterruptNoStream($signal)
+    {
+        if (!extension_loaded('pcntl')) {
+            $this->markTestSkipped('"pcntl" extension is required to run this test.');
+        }
+
+        // dispatch signal handler every 10ms for 0.1s
+        $check = $this->loop->addPeriodicTimer(0.01, function() {
+            pcntl_signal_dispatch();
+        });
+        $loop = $this->loop;
+        $loop->addTimer(0.1, function () use ($check, $loop) {
+            $loop->cancelTimer($check);
+        });
+
+        $handled = false;
+        $this->assertTrue(pcntl_signal(constant($signal), function () use (&$handled) {
+            $handled = true;
+        }));
+
+        // spawn external process to send signal to current process id
+        $this->forkSendSignal($signal);
+
+        $this->loop->run();
+        $this->assertTrue($handled);
+    }
+
+    /**
+     * Test signal interrupt when a stream is attached to the loop
+     * @dataProvider signalProvider
+     */
+    public function testSignalInterruptWithStream($signal)
+    {
+        if (!extension_loaded('pcntl')) {
+            $this->markTestSkipped('"pcntl" extension is required to run this test.');
+        }
+
+        // dispatch signal handler every 10ms
+        $this->loop->addPeriodicTimer(0.01, function() {
+            pcntl_signal_dispatch();
+        });
+
+        // add stream to the loop
+        $loop = $this->loop;
+        list($writeStream, $readStream) = $this->createSocketPair();
+        $loop->addReadStream($readStream, function ($stream) use ($loop) {
+            /** @var $loop LoopInterface */
+            $read = fgets($stream);
+            if ($read === "end loop\n") {
+                $loop->stop();
+            }
+        });
+        $this->loop->addTimer(0.1, function() use ($writeStream) {
+            fwrite($writeStream, "end loop\n");
+        });
+
+        $handled = false;
+        $this->assertTrue(pcntl_signal(constant($signal), function () use (&$handled) {
+            $handled = true;
+        }));
+
+        // spawn external process to send signal to current process id
+        $this->forkSendSignal($signal);
+
+        $this->loop->run();
+
+        $this->assertTrue($handled);
+    }
+
+    /**
+     * reset all signal handlers to default
+     */
+    protected function resetSignalHandlers()
+    {
+        foreach($this->signalProvider() as $signal) {
+            pcntl_signal(constant($signal[0]), SIG_DFL);
+        }
+    }
+
+    /**
+     * fork child process to send signal to current process id
+     */
+    protected function forkSendSignal($signal)
+    {
+        $currentPid = posix_getpid();
+        $childPid = pcntl_fork();
+        if ($childPid == -1) {
+            $this->fail("Failed to fork child process!");
+        } else if ($childPid === 0) {
+            // this is executed in the child process
+            usleep(20000);
+            posix_kill($currentPid, constant($signal));
+            die();
+        }
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/tests/TestCase.php b/assets/php/vendor/react/event-loop/tests/TestCase.php
new file mode 100644
index 0000000..dbdd54c
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/tests/TestCase.php
@@ -0,0 +1,53 @@
+<?php
+
+namespace React\Tests\EventLoop;
+
+use PHPUnit\Framework\TestCase as BaseTestCase;
+use React\EventLoop\LoopInterface;
+
+class TestCase extends BaseTestCase
+{
+    protected function expectCallableExactly($amount)
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->exactly($amount))
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    protected function expectCallableOnce()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    protected function expectCallableNever()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->never())
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    protected function createCallableMock()
+    {
+        return $this->getMockBuilder('React\Tests\EventLoop\CallableStub')->getMock();
+    }
+
+    protected function tickLoop(LoopInterface $loop)
+    {
+        $loop->futureTick(function () use ($loop) {
+            $loop->stop();
+        });
+
+        $loop->run();
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/tests/Timer/AbstractTimerTest.php b/assets/php/vendor/react/event-loop/tests/Timer/AbstractTimerTest.php
new file mode 100644
index 0000000..294e683
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/tests/Timer/AbstractTimerTest.php
@@ -0,0 +1,122 @@
+<?php
+
+namespace React\Tests\EventLoop\Timer;
+
+use React\EventLoop\LoopInterface;
+use React\Tests\EventLoop\TestCase;
+
+abstract class AbstractTimerTest extends TestCase
+{
+    /**
+     * @return LoopInterface
+     */
+    abstract public function createLoop();
+
+    public function testAddTimerReturnsNonPeriodicTimerInstance()
+    {
+        $loop = $this->createLoop();
+
+        $timer = $loop->addTimer(0.001, $this->expectCallableNever());
+
+        $this->assertInstanceOf('React\EventLoop\TimerInterface', $timer);
+        $this->assertFalse($timer->isPeriodic());
+    }
+
+    public function testAddTimerWillBeInvokedOnceAndBlocksLoopWhenRunning()
+    {
+        $loop = $this->createLoop();
+
+        $loop->addTimer(0.001, $this->expectCallableOnce());
+
+        $start = microtime(true);
+        $loop->run();
+        $end = microtime(true);
+
+        // make no strict assumptions about actual time interval.
+        // must be at least 0.001s (1ms) and should not take longer than 0.1s
+        $this->assertGreaterThanOrEqual(0.001, $end - $start);
+        $this->assertLessThan(0.1, $end - $start);
+    }
+
+    public function testAddPeriodicTimerReturnsPeriodicTimerInstance()
+    {
+        $loop = $this->createLoop();
+
+        $periodic = $loop->addPeriodicTimer(0.1, $this->expectCallableNever());
+
+        $this->assertInstanceOf('React\EventLoop\TimerInterface', $periodic);
+        $this->assertTrue($periodic->isPeriodic());
+    }
+
+    public function testAddPeriodicTimerWillBeInvokedUntilItIsCancelled()
+    {
+        $loop = $this->createLoop();
+
+        $periodic = $loop->addPeriodicTimer(0.1, $this->expectCallableExactly(3));
+
+        // make no strict assumptions about actual time interval.
+        // leave some room to ensure this ticks exactly 3 times.
+        $loop->addTimer(0.399, function () use ($loop, $periodic) {
+            $loop->cancelTimer($periodic);
+        });
+
+        $loop->run();
+    }
+
+    public function testAddPeriodicTimerWillBeInvokedWithMaximumAccuracyUntilItIsCancelled()
+    {
+        $loop = $this->createLoop();
+
+        $i = 0;
+        $periodic = $loop->addPeriodicTimer(0.001, function () use (&$i) {
+            ++$i;
+        });
+
+        $loop->addTimer(0.02, function () use ($loop, $periodic) {
+            $loop->cancelTimer($periodic);
+        });
+
+        $loop->run();
+
+        // make no strict assumptions about number of invocations.
+        // we know it must be no more than 20 times and should at least be
+        // invoked twice for really slow loops
+        $this->assertLessThanOrEqual(20, $i);
+        $this->assertGreaterThan(2, $i);
+    }
+
+    public function testAddPeriodicTimerCancelsItself()
+    {
+        $loop = $this->createLoop();
+
+        $i = 0;
+        $loop->addPeriodicTimer(0.001, function ($timer) use (&$i, $loop) {
+            $i++;
+
+            if ($i === 5) {
+                $loop->cancelTimer($timer);
+            }
+        });
+
+        $start = microtime(true);
+        $loop->run();
+        $end = microtime(true);
+
+        $this->assertEquals(5, $i);
+
+        // make no strict assumptions about time interval.
+        // 5 invocations must take at least 0.005s (5ms) and should not take
+        // longer than 0.1s for slower loops.
+        $this->assertGreaterThanOrEqual(0.005, $end - $start);
+        $this->assertLessThan(0.1, $end - $start);
+    }
+
+    public function testMinimumIntervalOneMicrosecond()
+    {
+        $loop = $this->createLoop();
+
+        $timer = $loop->addTimer(0, function () {});
+
+        $this->assertEquals(0.000001, $timer->getInterval());
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/tests/Timer/ExtEvTimerTest.php b/assets/php/vendor/react/event-loop/tests/Timer/ExtEvTimerTest.php
new file mode 100644
index 0000000..bfa9186
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/tests/Timer/ExtEvTimerTest.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace React\Tests\EventLoop\Timer;
+
+use React\EventLoop\ExtEvLoop;
+
+class ExtEvTimerTest extends AbstractTimerTest
+{
+    public function createLoop()
+    {
+        if (!class_exists('EvLoop')) {
+            $this->markTestSkipped('ExtEvLoop tests skipped because ext-ev extension is not installed.');
+        }
+
+        return new ExtEvLoop();
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/tests/Timer/ExtEventTimerTest.php b/assets/php/vendor/react/event-loop/tests/Timer/ExtEventTimerTest.php
new file mode 100644
index 0000000..a7a6d00
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/tests/Timer/ExtEventTimerTest.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace React\Tests\EventLoop\Timer;
+
+use React\EventLoop\ExtEventLoop;
+
+class ExtEventTimerTest extends AbstractTimerTest
+{
+    public function createLoop()
+    {
+        if (!extension_loaded('event')) {
+            $this->markTestSkipped('ext-event tests skipped because ext-event is not installed.');
+        }
+
+        return new ExtEventLoop();
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/tests/Timer/ExtLibevTimerTest.php b/assets/php/vendor/react/event-loop/tests/Timer/ExtLibevTimerTest.php
new file mode 100644
index 0000000..65e82be
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/tests/Timer/ExtLibevTimerTest.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace React\Tests\EventLoop\Timer;
+
+use React\EventLoop\ExtLibevLoop;
+
+class ExtLibevTimerTest extends AbstractTimerTest
+{
+    public function createLoop()
+    {
+        if (!class_exists('libev\EventLoop')) {
+            $this->markTestSkipped('libev tests skipped because ext-libev is not installed.');
+        }
+
+        return new ExtLibevLoop();
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/tests/Timer/ExtLibeventTimerTest.php b/assets/php/vendor/react/event-loop/tests/Timer/ExtLibeventTimerTest.php
new file mode 100644
index 0000000..9089b9a
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/tests/Timer/ExtLibeventTimerTest.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace React\Tests\EventLoop\Timer;
+
+use React\EventLoop\ExtLibeventLoop;
+
+class ExtLibeventTimerTest extends AbstractTimerTest
+{
+    public function createLoop()
+    {
+        if (!function_exists('event_base_new')) {
+            $this->markTestSkipped('libevent tests skipped because ext-libevent is not installed.');
+        }
+
+        return new ExtLibeventLoop();
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/tests/Timer/StreamSelectTimerTest.php b/assets/php/vendor/react/event-loop/tests/Timer/StreamSelectTimerTest.php
new file mode 100644
index 0000000..cfe1d7d
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/tests/Timer/StreamSelectTimerTest.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace React\Tests\EventLoop\Timer;
+
+use React\EventLoop\StreamSelectLoop;
+
+class StreamSelectTimerTest extends AbstractTimerTest
+{
+    public function createLoop()
+    {
+        return new StreamSelectLoop();
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/tests/Timer/TimersTest.php b/assets/php/vendor/react/event-loop/tests/Timer/TimersTest.php
new file mode 100644
index 0000000..b279478
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/tests/Timer/TimersTest.php
@@ -0,0 +1,27 @@
+<?php
+
+namespace React\Tests\EventLoop\Timer;
+
+use React\Tests\EventLoop\TestCase;
+use React\EventLoop\Timer\Timer;
+use React\EventLoop\Timer\Timers;
+
+class TimersTest extends TestCase
+{
+    public function testBlockedTimer()
+    {
+        $timers = new Timers();
+        $timers->tick();
+
+        // simulate a bunch of processing on stream events,
+        // part of which schedules a future timer...
+        sleep(1);
+        $timers->add(new Timer(0.5, function () {
+            $this->fail("Timer shouldn't be called");
+        }));
+
+        $timers->tick();
+
+        $this->assertTrue(true);
+    }
+}
diff --git a/assets/php/vendor/react/event-loop/tests/bootstrap.php b/assets/php/vendor/react/event-loop/tests/bootstrap.php
new file mode 100644
index 0000000..ea7dd4c
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/tests/bootstrap.php
@@ -0,0 +1,15 @@
+<?php
+
+$loader = @include __DIR__ . '/../vendor/autoload.php';
+if (!$loader) {
+    $loader = require __DIR__ . '/../../../../vendor/autoload.php';
+}
+$loader->addPsr4('React\\Tests\\EventLoop\\', __DIR__);
+
+if (!defined('SIGUSR1')) {
+    define('SIGUSR1', 1);
+}
+
+if (!defined('SIGUSR2')) {
+    define('SIGUSR2', 2);
+}
diff --git a/assets/php/vendor/react/event-loop/travis-init.sh b/assets/php/vendor/react/event-loop/travis-init.sh
new file mode 100755
index 0000000..29ce884
--- /dev/null
+++ b/assets/php/vendor/react/event-loop/travis-init.sh
@@ -0,0 +1,42 @@
+#!/bin/bash
+set -e
+set -o pipefail
+
+if [[ "$TRAVIS_PHP_VERSION" != "hhvm" &&
+      "$TRAVIS_PHP_VERSION" != "hhvm-nightly" ]]; then
+
+    # install 'event' and 'ev' PHP extension
+    if [[ "$TRAVIS_PHP_VERSION" != "5.3" ]]; then
+        echo "yes" | pecl install event
+        echo "yes" | pecl install ev
+    fi
+
+    # install 'libevent' PHP extension (does not support php 7)
+    if [[ "$TRAVIS_PHP_VERSION" != "7.0" &&
+          "$TRAVIS_PHP_VERSION" != "7.1" &&
+          "$TRAVIS_PHP_VERSION" != "7.2" ]]; then
+        curl http://pecl.php.net/get/libevent-0.1.0.tgz | tar -xz
+        pushd libevent-0.1.0
+        phpize
+       ./configure
+       make
+       make install
+       popd
+       echo "extension=libevent.so" >> "$(php -r 'echo php_ini_loaded_file();')"
+    fi
+
+    # install 'libev' PHP extension (does not support php 7)
+    if [[ "$TRAVIS_PHP_VERSION" != "7.0" &&
+          "$TRAVIS_PHP_VERSION" != "7.1" &&
+          "$TRAVIS_PHP_VERSION" != "7.2" ]]; then
+        git clone --recursive https://github.com/m4rw3r/php-libev
+        pushd php-libev
+        phpize
+        ./configure --with-libev
+        make
+        make install
+        popd
+        echo "extension=libev.so" >> "$(php -r 'echo php_ini_loaded_file();')"
+    fi
+
+fi
diff --git a/assets/php/vendor/react/promise-timer/.gitignore b/assets/php/vendor/react/promise-timer/.gitignore
new file mode 100644
index 0000000..de4a392
--- /dev/null
+++ b/assets/php/vendor/react/promise-timer/.gitignore
@@ -0,0 +1,2 @@
+/vendor
+/composer.lock
diff --git a/assets/php/vendor/react/promise-timer/.travis.yml b/assets/php/vendor/react/promise-timer/.travis.yml
new file mode 100644
index 0000000..a71864a
--- /dev/null
+++ b/assets/php/vendor/react/promise-timer/.travis.yml
@@ -0,0 +1,26 @@
+language: php
+
+php:
+# - 5.3 # requires old distro, see below
+  - 5.4
+  - 5.5
+  - 5.6
+  - 7.0
+  - 7.1
+  - hhvm # ignore errors, see below
+
+# lock distro so new future defaults will not break the build
+dist: trusty
+
+matrix:
+  include:
+    - php: 5.3
+      dist: precise
+  allow_failures:
+    - php: hhvm
+
+install:
+  - composer install --no-interaction
+
+script:
+  - vendor/bin/phpunit --coverage-text
diff --git a/assets/php/vendor/react/promise-timer/CHANGELOG.md b/assets/php/vendor/react/promise-timer/CHANGELOG.md
new file mode 100644
index 0000000..0a21244
--- /dev/null
+++ b/assets/php/vendor/react/promise-timer/CHANGELOG.md
@@ -0,0 +1,40 @@
+# Changelog
+
+## 1.2.1 (2017-12-22)
+
+*    README improvements
+     (#28 by @jsor)
+
+*    Improve test suite by adding forward compatiblity with PHPUnit 6 and
+     fix test suite forward compatibility with upcoming EventLoop releases
+     (#30 and #31 by @clue)
+
+## 1.2.0 (2017-08-08)
+
+* Feature: Only start timers if input Promise is still pending and
+  return a settled output promise if the input is already settled.
+  (#25 by @clue)
+
+* Feature: Cap minimum timer interval at 1µs across all versions
+  (#23 by @clue)
+
+* Feature: Forward compatibility with EventLoop v1.0 and v0.5
+  (#27 by @clue)
+
+* Improve test suite by adding PHPUnit to require-dev and
+  lock Travis distro so new defaults will not break the build
+  (#24 and #26 by @clue)
+
+## 1.1.1 (2016-12-27)
+
+* Improve test suite to use PSR-4 autoloader and proper namespaces.
+  (#21 by @clue)
+
+## 1.1.0 (2016-02-29)
+
+* Feature: Support promise cancellation for all timer primitives
+  (#18 by @clue)
+
+## 1.0.0 (2015-09-29)
+
+* First tagged release
diff --git a/assets/php/vendor/react/promise-timer/LICENSE b/assets/php/vendor/react/promise-timer/LICENSE
new file mode 100644
index 0000000..dc09d1e
--- /dev/null
+++ b/assets/php/vendor/react/promise-timer/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 Christian Lück
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/assets/php/vendor/react/promise-timer/README.md b/assets/php/vendor/react/promise-timer/README.md
new file mode 100644
index 0000000..2ea94fa
--- /dev/null
+++ b/assets/php/vendor/react/promise-timer/README.md
@@ -0,0 +1,372 @@
+# PromiseTimer
+
+[![Build Status](https://travis-ci.org/reactphp/promise-timer.svg?branch=master)](https://travis-ci.org/reactphp/promise-timer)
+
+A trivial implementation of timeouts for `Promise`s, built on top of [ReactPHP](https://reactphp.org/).
+
+**Table of contents**
+
+* [Usage](#usage)
+  * [timeout()](#timeout)
+    * [Timeout cancellation](#timeout-cancellation)
+    * [Cancellation handler](#cancellation-handler)
+    * [Input cancellation](#input-cancellation)
+    * [Output cancellation](#output-cancellation)
+    * [Collections](#collections)
+  * [resolve()](#resolve)
+    * [Resolve cancellation](#resolve-cancellation)
+  * [reject()](#reject)
+    * [Reject cancellation](#reject-cancellation)
+  * [TimeoutException](#timeoutexception)
+* [Install](#install)
+* [Tests](#tests)
+* [License](#license)
+
+## Usage
+
+This lightweight library consists only of a few simple functions.
+All functions reside under the `React\Promise\Timer` namespace.
+
+The below examples assume you use an import statement similar to this:
+
+```php
+use React\Promise\Timer;
+
+Timer\timeout(…);
+```
+
+Alternatively, you can also refer to them with their fully-qualified name:
+
+```php
+\React\Promise\Timer\timeout(…);
+``` 
+
+### timeout()
+
+The `timeout(PromiseInterface $promise, $time, LoopInterface $loop)` function
+can be used to *cancel* operations that take *too long*.
+You need to pass in an input `$promise` that represents a pending operation and timeout parameters.
+It returns a new `Promise` with the following resolution behavior:
+
+* If the input `$promise` resolves before `$time` seconds, resolve the resulting promise with its fulfillment value.
+* If the input `$promise` rejects before `$time` seconds, reject the resulting promise with its rejection value.
+* If the input `$promise` does not settle before `$time` seconds, *cancel* the operation and reject the resulting promise with a [`TimeoutException`](#timeoutexception).
+
+Internally, the given `$time` value will be used to start a timer that will
+*cancel* the pending operation once it triggers.
+This implies that if you pass a really small (or negative) value, it will still
+start a timer and will thus trigger at the earliest possible time in the future.
+
+If the input `$promise` is already settled, then the resulting promise will
+resolve or reject immediately without starting a timer at all.
+
+A common use case for handling only resolved values looks like this:
+
+```php
+$promise = accessSomeRemoteResource();
+Timer\timeout($promise, 10.0, $loop)->then(function ($value) {
+    // the operation finished within 10.0 seconds
+});
+```
+
+A more complete example could look like this:
+
+```php
+$promise = accessSomeRemoteResource();
+Timer\timeout($promise, 10.0, $loop)->then(
+    function ($value) {
+        // the operation finished within 10.0 seconds
+    },
+    function ($error) {
+        if ($error instanceof Timer\TimeoutException) {
+            // the operation has failed due to a timeout
+        } else {
+            // the input operation has failed due to some other error
+        }
+    }
+);
+```
+
+Or if you're using [react/promise v2.2.0](https://github.com/reactphp/promise) or up:
+
+```php
+Timer\timeout($promise, 10.0, $loop)
+    ->then(function ($value) {
+        // the operation finished within 10.0 seconds
+    })
+    ->otherwise(function (Timer\TimeoutException $error) {
+        // the operation has failed due to a timeout
+    })
+    ->otherwise(function ($error) {
+        // the input operation has failed due to some other error
+    })
+;
+```
+
+#### Timeout cancellation
+
+As discussed above, the [`timeout()`](#timeout) function will *cancel* the
+underlying operation if it takes *too long*.
+This means that you can be sure the resulting promise will then be rejected
+with a [`TimeoutException`](#timeoutexception).
+
+However, what happens to the underlying input `$promise` is a bit more tricky:
+Once the timer fires, we will try to call
+[`$promise->cancel()`](https://github.com/reactphp/promise#cancellablepromiseinterfacecancel)
+on the input `$promise` which in turn invokes its [cancellation handler](#cancellation-handler).
+
+This means that it's actually up the input `$promise` to handle
+[cancellation support](https://github.com/reactphp/promise#cancellablepromiseinterface).
+
+* A common use case involves cleaning up any resources like open network sockets or
+  file handles or terminating external processes or timers.
+
+* If the given input `$promise` does not support cancellation, then this is a NO-OP.
+  This means that while the resulting promise will still be rejected, the underlying
+  input `$promise` may still be pending and can hence continue consuming resources.
+
+See the following chapter for more details on the cancellation handler.
+
+#### Cancellation handler
+
+For example, an implementation for the above operation could look like this:
+
+```php
+function accessSomeRemoteResource()
+{
+    return new Promise(
+        function ($resolve, $reject) use (&$socket) {
+            // this will be called once the promise is created
+            // a common use case involves opening any resources and eventually resolving
+            $socket = createSocket();
+            $socket->on('data', function ($data) use ($resolve) {
+                $resolve($data);
+            });
+        },
+        function ($resolve, $reject) use (&$socket) {
+            // this will be called once calling `cancel()` on this promise
+            // a common use case involves cleaning any resources and then rejecting
+            $socket->close();
+            $reject(new \RuntimeException('Operation cancelled'));
+        }
+    );
+}
+```
+
+In this example, calling `$promise->cancel()` will invoke the registered cancellation
+handler which then closes the network socket and rejects the `Promise` instance.
+
+If no cancellation handler is passed to the `Promise` constructor, then invoking
+its `cancel()` method it is effectively a NO-OP.
+This means that it may still be pending and can hence continue consuming resources.
+
+For more details on the promise cancellation, please refer to the
+[Promise documentation](https://github.com/reactphp/promise#cancellablepromiseinterface).
+
+#### Input cancellation
+
+Irrespective of the timout handling, you can also explicitly `cancel()` the
+input `$promise` at any time.
+This means that the `timeout()` handling does not affect cancellation of the
+input `$promise`, as demonstrated in the following example:
+
+```php
+$promise = accessSomeRemoteResource();
+$timeout = Timer\timeout($promise, 10.0, $loop);
+
+$promise->cancel();
+```
+
+The registered [cancellation handler](#cancellation-handler) is responsible for
+handling the `cancel()` call:
+
+* A described above, a common use involves resource cleanup and will then *reject*
+  the `Promise`.
+  If the input `$promise` is being rejected, then the timeout will be aborted
+  and the resulting promise will also be rejected.
+* If the input `$promise` is still pending, then the timout will continue
+  running until the timer expires.
+  The same happens if the input `$promise` does not register a
+  [cancellation handler](#cancellation-handler). 
+
+#### Output cancellation
+
+Similarily, you can also explicitly `cancel()` the resulting promise like this:
+
+```php
+$promise = accessSomeRemoteResource();
+$timeout = Timer\timeout($promise, 10.0, $loop);
+
+$timeout->cancel();
+```
+
+Note how this looks very similar to the above [input cancellation](#input-cancellation)
+example. Accordingly, it also behaves very similar.
+
+Calling `cancel()` on the resulting promise will merely try
+to `cancel()` the input `$promise`.
+This means that we do not take over responsibility of the outcome and it's
+entirely up to the input `$promise` to handle cancellation support.
+
+The registered [cancellation handler](#cancellation-handler) is responsible for
+handling the `cancel()` call:
+
+* As described above, a common use involves resource cleanup and will then *reject*
+  the `Promise`.
+  If the input `$promise` is being rejected, then the timeout will be aborted
+  and the resulting promise will also be rejected.
+* If the input `$promise` is still pending, then the timout will continue
+  running until the timer expires.
+  The same happens if the input `$promise` does not register a
+  [cancellation handler](#cancellation-handler). 
+
+To re-iterate, note that calling `cancel()` on the resulting promise will merely
+try to cancel the input `$promise` only.
+It is then up to the cancellation handler of the input promise to settle the promise.
+If the input promise is still pending when the timeout occurs, then the normal
+[timeout cancellation](#timeout-cancellation) handling will trigger, effectively rejecting
+the output promise with a [`TimeoutException`](#timeoutexception).
+
+This is done for consistency with the [timeout cancellation](#timeout-cancellation)
+handling and also because it is assumed this is often used like this:
+
+```php
+$timeout = Timer\timeout(accessSomeRemoteResource(), 10.0, $loop);
+
+$timeout->cancel();
+```
+
+As described above, this example works as expected and cleans up any resources
+allocated for the input `$promise`.
+
+Note that if the given input `$promise` does not support cancellation, then this
+is a NO-OP.
+This means that while the resulting promise will still be rejected after the
+timeout, the underlying input `$promise` may still be pending and can hence
+continue consuming resources.
+
+#### Collections
+
+If you want to wait for multiple promises to resolve, you can use the normal promise primitives like this:
+
+```php
+$promises = array(
+    accessSomeRemoteResource(),
+    accessSomeRemoteResource(),
+    accessSomeRemoteResource()
+);
+
+$promise = \React\Promise\all($promises);
+
+Timer\timeout($promise, 10, $loop)->then(function ($values) {
+    // *all* promises resolved
+});
+```
+
+The applies to all promise collection primitives alike, i.e. `all()`, `race()`, `any()`, `some()` etc.
+
+For more details on the promise primitives, please refer to the
+[Promise documentation](https://github.com/reactphp/promise#functions).
+
+### resolve()
+
+The `resolve($time, LoopInterface $loop)` function can be used to create a new Promise that
+resolves in `$time` seconds with the `$time` as the fulfillment value.
+
+```php
+Timer\resolve(1.5, $loop)->then(function ($time) {
+    echo 'Thanks for waiting ' . $time . ' seconds' . PHP_EOL;
+});
+```
+
+Internally, the given `$time` value will be used to start a timer that will
+resolve the promise once it triggers.
+This implies that if you pass a really small (or negative) value, it will still
+start a timer and will thus trigger at the earliest possible time in the future.
+
+#### Resolve cancellation
+
+You can explicitly `cancel()` the resulting timer promise at any time:
+
+```php
+$timer = Timer\resolve(2.0, $loop);
+
+$timer->cancel();
+```
+
+This will abort the timer and *reject* with a `RuntimeException`.
+
+### reject()
+
+The `reject($time, LoopInterface $loop)` function can be used to create a new Promise
+which rejects in `$time` seconds with a `TimeoutException`.
+
+```php
+Timer\reject(2.0, $loop)->then(null, function (TimeoutException $e) {
+    echo 'Rejected after ' . $e->getTimeout() . ' seconds ' . PHP_EOL;
+});
+```
+
+Internally, the given `$time` value will be used to start a timer that will
+reject the promise once it triggers.
+This implies that if you pass a really small (or negative) value, it will still
+start a timer and will thus trigger at the earliest possible time in the future.
+
+This function complements the [`resolve()`](#resolve) function
+and can be used as a basic building block for higher-level promise consumers.
+
+#### Reject cancellation
+
+You can explicitly `cancel()` the resulting timer promise at any time:
+
+```php
+$timer = Timer\reject(2.0, $loop);
+
+$timer->cancel();
+```
+
+This will abort the timer and *reject* with a `RuntimeException`.
+
+### TimeoutException
+
+The `TimeoutException` extends PHP's built-in `RuntimeException`.
+
+The `getTimeout()` method can be used to get the timeout value in seconds.
+
+## Install
+
+The recommended way to install this library is [through Composer](https://getcomposer.org).
+[New to Composer?](https://getcomposer.org/doc/00-intro.md)
+
+This project follows [SemVer](http://semver.org/).
+This will install the latest supported version:
+
+```bash
+$ composer require react/promise-timer:^1.2.1
+```
+
+See also the [CHANGELOG](CHANGELOG.md) for details about version upgrades.
+
+This project aims to run on any platform and thus does not require any PHP
+extensions and supports running on legacy PHP 5.3 through current PHP 7+ and
+HHVM.
+It's *highly recommended to use PHP 7+* for this project.
+
+## Tests
+
+To run the test suite, you first need to clone this repo and then install all
+dependencies [through Composer](https://getcomposer.org):
+
+```bash
+$ composer install
+```
+
+To run the test suite, go to the project root and run:
+
+```bash
+$ php vendor/bin/phpunit
+```
+
+## License
+
+MIT, see [LICENSE file](LICENSE).
diff --git a/assets/php/vendor/react/promise-timer/composer.json b/assets/php/vendor/react/promise-timer/composer.json
new file mode 100644
index 0000000..e425dc6
--- /dev/null
+++ b/assets/php/vendor/react/promise-timer/composer.json
@@ -0,0 +1,28 @@
+{
+    "name": "react/promise-timer",
+    "description": "A trivial implementation of timeouts for Promises, built on top of ReactPHP.",
+    "keywords": ["Promise", "timeout", "timer", "event-loop", "ReactPHP", "async"],
+    "homepage": "https://github.com/react/promise-timer",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Christian Lück",
+            "email": "christian@lueck.tv"
+        }
+    ],
+    "autoload": {
+        "psr-4": { "React\\Promise\\Timer\\": "src/" },
+        "files": [ "src/functions.php" ]
+    },
+    "autoload-dev": {
+        "psr-4": { "React\\Tests\\Promise\\Timer\\": "tests/" }
+    },
+    "require": {
+        "php": ">=5.3",
+        "react/event-loop": "^1.0 || ^0.5 || ^0.4 || ^0.3.5",
+        "react/promise": "~2.1|~1.2"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^6.4 || ^5.7 || ^4.8.35"
+    }
+}
diff --git a/assets/php/vendor/react/promise-timer/phpunit.xml.dist b/assets/php/vendor/react/promise-timer/phpunit.xml.dist
new file mode 100644
index 0000000..bb79fba
--- /dev/null
+++ b/assets/php/vendor/react/promise-timer/phpunit.xml.dist
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit bootstrap="vendor/autoload.php"
+         colors="true"
+         convertErrorsToExceptions="true"
+         convertNoticesToExceptions="true"
+         convertWarningsToExceptions="true"
+>
+    <testsuites>
+        <testsuite name="Promise Timer Test Suite">
+            <directory>./tests/</directory>
+        </testsuite>
+    </testsuites>
+    <filter>
+        <whitelist>
+            <directory>./src/</directory>
+        </whitelist>
+    </filter>
+</phpunit>
\ No newline at end of file
diff --git a/assets/php/vendor/react/promise-timer/src/TimeoutException.php b/assets/php/vendor/react/promise-timer/src/TimeoutException.php
new file mode 100644
index 0000000..18ea72f
--- /dev/null
+++ b/assets/php/vendor/react/promise-timer/src/TimeoutException.php
@@ -0,0 +1,22 @@
+<?php
+
+namespace React\Promise\Timer;
+
+use RuntimeException;
+
+class TimeoutException extends RuntimeException
+{
+    private $timeout;
+
+    public function __construct($timeout, $message = null, $code = null, $previous = null)
+    {
+        parent::__construct($message, $code, $previous);
+
+        $this->timeout = $timeout;
+    }
+
+    public function getTimeout()
+    {
+        return $this->timeout;
+    }
+}
diff --git a/assets/php/vendor/react/promise-timer/src/functions.php b/assets/php/vendor/react/promise-timer/src/functions.php
new file mode 100644
index 0000000..6ad9867
--- /dev/null
+++ b/assets/php/vendor/react/promise-timer/src/functions.php
@@ -0,0 +1,70 @@
+<?php
+
+namespace React\Promise\Timer;
+
+use React\Promise\CancellablePromiseInterface;
+use React\EventLoop\LoopInterface;
+use React\Promise\PromiseInterface;
+use React\Promise\Promise;
+
+function timeout(PromiseInterface $promise, $time, LoopInterface $loop)
+{
+    // cancelling this promise will only try to cancel the input promise,
+    // thus leaving responsibility to the input promise.
+    $canceller = null;
+    if ($promise instanceof CancellablePromiseInterface) {
+        $canceller = array($promise, 'cancel');
+    }
+
+    return new Promise(function ($resolve, $reject) use ($loop, $time, $promise) {
+        $timer = null;
+        $promise->then(function ($v) use (&$timer, $loop, $resolve) {
+            if ($timer) {
+                $loop->cancelTimer($timer);
+            }
+            $timer = false;
+            $resolve($v);
+        }, function ($v) use (&$timer, $loop, $reject) {
+            if ($timer) {
+                $loop->cancelTimer($timer);
+            }
+            $timer = false;
+            $reject($v);
+        });
+
+        // promise already resolved => no need to start timer
+        if ($timer === false) {
+            return;
+        }
+
+        // start timeout timer which will cancel the input promise
+        $timer = $loop->addTimer($time, function () use ($time, $promise, $reject) {
+            $reject(new TimeoutException($time, 'Timed out after ' . $time . ' seconds'));
+
+            if ($promise instanceof CancellablePromiseInterface) {
+                $promise->cancel();
+            }
+        });
+    }, $canceller);
+}
+
+function resolve($time, LoopInterface $loop)
+{
+    return new Promise(function ($resolve) use ($loop, $time, &$timer) {
+        // resolve the promise when the timer fires in $time seconds
+        $timer = $loop->addTimer($time, function () use ($time, $resolve) {
+            $resolve($time);
+        });
+    }, function ($resolveUnused, $reject) use (&$timer, $loop) {
+        // cancelling this promise will cancel the timer and reject
+        $loop->cancelTimer($timer);
+        $reject(new \RuntimeException('Timer cancelled'));
+    });
+}
+
+function reject($time, LoopInterface $loop)
+{
+    return resolve($time, $loop)->then(function ($time) {
+        throw new TimeoutException($time, 'Timer expired after ' . $time . ' seconds');
+    });
+}
diff --git a/assets/php/vendor/react/promise-timer/tests/CallableStub.php b/assets/php/vendor/react/promise-timer/tests/CallableStub.php
new file mode 100644
index 0000000..a391aa5
--- /dev/null
+++ b/assets/php/vendor/react/promise-timer/tests/CallableStub.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace React\Tests\Promise\Timer;
+
+class CallableStub
+{
+    public function __invoke()
+    {
+    }
+}
diff --git a/assets/php/vendor/react/promise-timer/tests/FunctionRejectTest.php b/assets/php/vendor/react/promise-timer/tests/FunctionRejectTest.php
new file mode 100644
index 0000000..6153fcc
--- /dev/null
+++ b/assets/php/vendor/react/promise-timer/tests/FunctionRejectTest.php
@@ -0,0 +1,49 @@
+<?php
+
+namespace React\Tests\Promise\Timer;
+
+use React\Promise\Timer;
+
+class FunctionRejectTest extends TestCase
+{
+    public function testPromiseIsPendingWithoutRunningLoop()
+    {
+        $promise = Timer\reject(0.01, $this->loop);
+
+        $this->expectPromisePending($promise);
+    }
+
+    public function testPromiseExpiredIsPendingWithoutRunningLoop()
+    {
+        $promise = Timer\reject(-1, $this->loop);
+
+        $this->expectPromisePending($promise);
+    }
+
+    public function testPromiseWillBeRejectedOnTimeout()
+    {
+        $promise = Timer\reject(0.01, $this->loop);
+
+        $this->loop->run();
+
+        $this->expectPromiseRejected($promise);
+    }
+
+    public function testPromiseExpiredWillBeRejectedOnTimeout()
+    {
+        $promise = Timer\reject(-1, $this->loop);
+
+        $this->loop->run();
+
+        $this->expectPromiseRejected($promise);
+    }
+
+    public function testCancelingPromiseWillRejectTimer()
+    {
+        $promise = Timer\reject(0.01, $this->loop);
+
+        $promise->cancel();
+
+        $this->expectPromiseRejected($promise);
+    }
+}
diff --git a/assets/php/vendor/react/promise-timer/tests/FunctionResolveTest.php b/assets/php/vendor/react/promise-timer/tests/FunctionResolveTest.php
new file mode 100644
index 0000000..0bfdc21
--- /dev/null
+++ b/assets/php/vendor/react/promise-timer/tests/FunctionResolveTest.php
@@ -0,0 +1,71 @@
+<?php
+
+namespace React\Tests\Promise\Timer;
+
+use React\Promise\Timer;
+
+class FunctionResolveTest extends TestCase
+{
+    public function testPromiseIsPendingWithoutRunningLoop()
+    {
+        $promise = Timer\resolve(0.01, $this->loop);
+
+        $this->expectPromisePending($promise);
+    }
+
+    public function testPromiseExpiredIsPendingWithoutRunningLoop()
+    {
+        $promise = Timer\resolve(-1, $this->loop);
+
+        $this->expectPromisePending($promise);
+    }
+
+    public function testPromiseWillBeResolvedOnTimeout()
+    {
+        $promise = Timer\resolve(0.01, $this->loop);
+
+        $this->loop->run();
+
+        $this->expectPromiseResolved($promise);
+    }
+
+    public function testPromiseExpiredWillBeResolvedOnTimeout()
+    {
+        $promise = Timer\resolve(-1, $this->loop);
+
+        $this->loop->run();
+
+        $this->expectPromiseResolved($promise);
+    }
+
+    public function testWillStartLoopTimer()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('addTimer')->with($this->equalTo(0.01));
+
+        Timer\resolve(0.01, $loop);
+    }
+
+    public function testCancellingPromiseWillCancelLoopTimer()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $timer = $this->getMockBuilder(interface_exists('React\EventLoop\TimerInterface') ? 'React\EventLoop\TimerInterface' : 'React\EventLoop\Timer\TimerInterface')->getMock();
+        $loop->expects($this->once())->method('addTimer')->will($this->returnValue($timer));
+
+        $promise = Timer\resolve(0.01, $loop);
+
+        $loop->expects($this->once())->method('cancelTimer')->with($this->equalTo($timer));
+
+        $promise->cancel();
+    }
+
+    public function testCancelingPromiseWillRejectTimer()
+    {
+        $promise = Timer\resolve(0.01, $this->loop);
+
+        $promise->cancel();
+
+        $this->expectPromiseRejected($promise);
+    }
+}
diff --git a/assets/php/vendor/react/promise-timer/tests/FunctionTimeoutTest.php b/assets/php/vendor/react/promise-timer/tests/FunctionTimeoutTest.php
new file mode 100644
index 0000000..aaca2da
--- /dev/null
+++ b/assets/php/vendor/react/promise-timer/tests/FunctionTimeoutTest.php
@@ -0,0 +1,169 @@
+<?php
+
+namespace React\Tests\Promise\Timer;
+
+use React\Promise\Timer;
+use React\Promise;
+
+class FunctionTimerTest extends TestCase
+{
+    public function testResolvedWillResolveRightAway()
+    {
+        $promise = Promise\resolve();
+
+        $promise = Timer\timeout($promise, 3, $this->loop);
+
+        $this->expectPromiseResolved($promise);
+    }
+
+    public function testResolvedExpiredWillResolveRightAway()
+    {
+        $promise = Promise\resolve();
+
+        $promise = Timer\timeout($promise, -1, $this->loop);
+
+        $this->expectPromiseResolved($promise);
+    }
+
+    public function testResolvedWillNotStartTimer()
+    {
+        $promise = Promise\resolve();
+
+        Timer\timeout($promise, 3, $this->loop);
+
+        $time = microtime(true);
+        $this->loop->run();
+        $time = microtime(true) - $time;
+
+        $this->assertLessThan(0.5, $time);
+    }
+
+    public function testRejectedWillRejectRightAway()
+    {
+        $promise = Promise\reject();
+
+        $promise = Timer\timeout($promise, 3, $this->loop);
+
+        $this->expectPromiseRejected($promise);
+    }
+
+    public function testRejectedWillNotStartTimer()
+    {
+        $promise = Promise\reject();
+
+        Timer\timeout($promise, 3, $this->loop);
+
+        $time = microtime(true);
+        $this->loop->run();
+        $time = microtime(true) - $time;
+
+        $this->assertLessThan(0.5, $time);
+    }
+
+    public function testPendingWillRejectOnTimeout()
+    {
+        $promise = $this->getMockBuilder('React\Promise\PromiseInterface')->getMock();
+
+        $promise = Timer\timeout($promise, 0.01, $this->loop);
+
+        $this->loop->run();
+
+        $this->expectPromiseRejected($promise);
+    }
+
+    public function testPendingCancellableWillBeCancelledOnTimeout()
+    {
+        $promise = $this->getMockBuilder('React\Promise\CancellablePromiseInterface')->getMock();
+        $promise->expects($this->once())->method('cancel');
+
+        Timer\timeout($promise, 0.01, $this->loop);
+
+        $this->loop->run();
+    }
+
+    public function testCancelTimeoutWithoutCancellationhandlerWillNotCancelTimerAndWillNotReject()
+    {
+        $promise = new \React\Promise\Promise(function () { });
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $timer = $this->getMockBuilder('React\EventLoop\Timer\TimerInterface')->getMock();
+        $loop->expects($this->once())->method('addTimer')->will($this->returnValue($timer));
+        $loop->expects($this->never())->method('cancelTimer');
+
+        $timeout = Timer\timeout($promise, 0.01, $loop);
+
+        $timeout->cancel();
+
+        $this->expectPromisePending($timeout);
+    }
+
+    public function testResolvedPromiseWillNotStartTimer()
+    {
+        $promise = new \React\Promise\Promise(function ($resolve) { $resolve(true); });
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->never())->method('addTimer');
+
+        $timeout = Timer\timeout($promise, 0.01, $loop);
+
+        $this->expectPromiseResolved($timeout);
+    }
+
+    public function testRejectedPromiseWillNotStartTimer()
+    {
+        $promise = Promise\reject(new \RuntimeException());
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->never())->method('addTimer');
+
+        $timeout = Timer\timeout($promise, 0.01, $loop);
+
+        $this->expectPromiseRejected($timeout);
+    }
+
+    public function testCancelTimeoutWillCancelGivenPromise()
+    {
+        $promise = new \React\Promise\Promise(function () { }, $this->expectCallableOnce());
+
+        $timeout = Timer\timeout($promise, 0.01, $this->loop);
+
+        $timeout->cancel();
+    }
+
+    public function testCancelGivenPromiseWillReject()
+    {
+        $promise = new \React\Promise\Promise(function () { }, function ($resolve, $reject) { $reject(); });
+
+        $timeout = Timer\timeout($promise, 0.01, $this->loop);
+
+        $promise->cancel();
+
+        $this->expectPromiseRejected($promise);
+        $this->expectPromiseRejected($timeout);
+    }
+
+    public function testCancelTimeoutWillRejectIfGivenPromiseWillReject()
+    {
+        $promise = new \React\Promise\Promise(function () { }, function ($resolve, $reject) { $reject(); });
+
+        $timeout = Timer\timeout($promise, 0.01, $this->loop);
+
+        $timeout->cancel();
+
+        $this->expectPromiseRejected($promise);
+        $this->expectPromiseRejected($timeout);
+    }
+
+    public function testCancelTimeoutWillResolveIfGivenPromiseWillResolve()
+    {
+        $promise = new \React\Promise\Promise(function () { }, function ($resolve, $reject) { $resolve(); });
+
+        $timeout = Timer\timeout($promise, 0.01, $this->loop);
+
+        $timeout->cancel();
+
+        $this->expectPromiseResolved($promise);
+        $this->expectPromiseResolved($timeout);
+    }
+}
diff --git a/assets/php/vendor/react/promise-timer/tests/TestCase.php b/assets/php/vendor/react/promise-timer/tests/TestCase.php
new file mode 100644
index 0000000..9d8d49a
--- /dev/null
+++ b/assets/php/vendor/react/promise-timer/tests/TestCase.php
@@ -0,0 +1,61 @@
+<?php
+
+namespace React\Tests\Promise\Timer;
+
+use PHPUnit\Framework\TestCase as BaseTestCase;
+use React\EventLoop\Factory;
+
+class TestCase extends BaseTestCase
+{
+    protected $loop;
+
+    public function setUp()
+    {
+        $this->loop = Factory::create();
+    }
+
+    protected function expectCallableOnce()
+    {
+        $mock = $this->createCallableMock();
+
+        $mock
+            ->expects($this->once())
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    protected function expectCallableNever()
+    {
+        $mock = $this->createCallableMock();
+
+        $mock
+            ->expects($this->never())
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    /**
+     * @link https://github.com/reactphp/react/blob/master/tests/React/Tests/Socket/TestCase.php (taken from reactphp/react)
+     */
+    protected function createCallableMock()
+    {
+        return $this->getMockBuilder('React\Tests\Promise\Timer\CallableStub')->getMock();
+    }
+
+    protected function expectPromiseRejected($promise)
+    {
+        return $promise->then($this->expectCallableNever(), $this->expectCallableOnce());
+    }
+
+    protected function expectPromiseResolved($promise)
+    {
+        return $promise->then($this->expectCallableOnce(), $this->expectCallableNever());
+    }
+
+    protected function expectPromisePending($promise)
+    {
+        return $promise->then($this->expectCallableNever(), $this->expectCallableNever());
+    }
+}
diff --git a/assets/php/vendor/react/promise-timer/tests/TimeoutExceptionTest.php b/assets/php/vendor/react/promise-timer/tests/TimeoutExceptionTest.php
new file mode 100644
index 0000000..e9bedd9
--- /dev/null
+++ b/assets/php/vendor/react/promise-timer/tests/TimeoutExceptionTest.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace React\Tests\Promise\Timer;
+
+use React\Promise\Timer\TimeoutException;
+
+class TimeoutExceptionTest extends TestCase
+{
+    public function testAccessTimeout()
+    {
+        $e = new TimeoutException(10);
+
+        $this->assertEquals(10, $e->getTimeout());
+    }
+}
diff --git a/assets/php/vendor/react/promise/.gitignore b/assets/php/vendor/react/promise/.gitignore
new file mode 100644
index 0000000..5241c60
--- /dev/null
+++ b/assets/php/vendor/react/promise/.gitignore
@@ -0,0 +1,5 @@
+composer.lock
+composer.phar
+phpunit.xml
+build/
+vendor/
diff --git a/assets/php/vendor/react/promise/.travis.yml b/assets/php/vendor/react/promise/.travis.yml
new file mode 100644
index 0000000..5d0c6ab
--- /dev/null
+++ b/assets/php/vendor/react/promise/.travis.yml
@@ -0,0 +1,22 @@
+language: php
+
+php:
+  - 5.4
+  - 5.5
+  - 5.6
+  - 7.0
+  - nightly
+  - hhvm
+
+before_install:
+  - composer self-update
+
+install:
+  - composer install
+
+script:
+  - ./vendor/bin/phpunit -v --coverage-text --coverage-clover=./build/logs/clover.xml
+
+after_script:
+  - if [ -f ./build/logs/clover.xml ]; then travis_retry composer require satooshi/php-coveralls --no-interaction --update-with-dependencies; fi
+  - if [ -f ./build/logs/clover.xml ]; then php vendor/bin/coveralls -v; fi
diff --git a/assets/php/vendor/react/promise/CHANGELOG.md b/assets/php/vendor/react/promise/CHANGELOG.md
new file mode 100644
index 0000000..484e542
--- /dev/null
+++ b/assets/php/vendor/react/promise/CHANGELOG.md
@@ -0,0 +1,96 @@
+CHANGELOG for 2.x
+=================
+
+* 2.5.1 (2017-03-25)
+
+    * Fix circular references when resolving with a promise which follows
+      itself (#94).
+
+* 2.5.0 (2016-12-22)
+
+    * Revert automatic cancellation of pending collection promises once the
+      output promise resolves. This was introduced in 42d86b7 (PR #36, released
+      in [v2.3.0](https://github.com/reactphp/promise/releases/tag/v2.3.0)) and
+      was both unintended and backward incompatible.
+
+      If you need automatic cancellation, you can use something like:
+
+      ```php
+      function allAndCancel(array $promises)
+      {
+           return \React\Promise\all($promises)
+               ->always(function() use ($promises) {
+                   foreach ($promises as $promise) {
+                       if ($promise instanceof \React\Promise\CancellablePromiseInterface) {
+                           $promise->cancel();
+                       }
+                   }
+              });
+      }
+      ```
+    * `all()` and `map()` functions now preserve the order of the array (#77).
+    * Fix circular references when resolving a promise with itself (#71).
+
+* 2.4.1 (2016-05-03)
+
+    * Fix `some()` not cancelling pending promises when too much input promises
+      reject (16ff799).
+
+* 2.4.0 (2016-03-31)
+
+    * Support foreign thenables in `resolve()`.
+      Any object that provides a `then()` method is now assimilated to a trusted
+      promise that follows the state of this thenable (#52).
+    * Fix `some()` and `any()` for input arrays containing not enough items
+      (#34).
+
+* 2.3.0 (2016-03-24)
+
+    * Allow cancellation of promises returned by functions working on promise
+      collections (#36).
+    * Handle `\Throwable` in the same way as `\Exception` (#51 by @joshdifabio).
+
+* 2.2.2 (2016-02-26)
+
+    * Fix cancellation handlers called multiple times (#47 by @clue).
+
+* 2.2.1 (2015-07-03)
+
+    * Fix stack error when resolving a promise in its own fulfillment or
+      rejection handlers.
+
+* 2.2.0 (2014-12-30)
+
+    * Introduce new `ExtendedPromiseInterface` implemented by all promises.
+    * Add new `done()` method (part of the `ExtendedPromiseInterface`).
+    * Add new `otherwise()` method (part of the `ExtendedPromiseInterface`).
+    * Add new `always()` method (part of the `ExtendedPromiseInterface`).
+    * Add new `progress()` method (part of the `ExtendedPromiseInterface`).
+    * Rename `Deferred::progress` to `Deferred::notify` to avoid confusion with
+      `ExtendedPromiseInterface::progress` (a `Deferred::progress` alias is
+      still available for backward compatibility)
+    * `resolve()` now always returns a `ExtendedPromiseInterface`.
+
+* 2.1.0 (2014-10-15)
+
+    * Introduce new `CancellablePromiseInterface` implemented by all promises.
+    * Add new `cancel()` method (part of the `CancellablePromiseInterface`).
+
+* 2.0.0 (2013-12-10)
+
+    New major release. The goal is to streamline the API and to make it more
+    compliant with other promise libraries and especially with the new upcoming
+    [ES6 promises specification](https://github.com/domenic/promises-unwrapping/).
+
+    * Add standalone Promise class.
+    * Add new `race()` function.
+    * BC break: Bump minimum PHP version to PHP 5.4.
+    * BC break: Remove `ResolverInterface` and `PromiseInterface` from 
+      `Deferred`.
+    * BC break: Change signature of `PromiseInterface`.
+    * BC break: Remove `When` and `Util` classes and move static methods to
+      functions.
+    * BC break: `FulfilledPromise` and `RejectedPromise` now throw an exception
+      when initialized with a promise instead of a value/reason.
+    * BC break: `Deferred::resolve()` and `Deferred::reject()` no longer return
+      a promise.
diff --git a/assets/php/vendor/react/promise/LICENSE b/assets/php/vendor/react/promise/LICENSE
new file mode 100644
index 0000000..5919d20
--- /dev/null
+++ b/assets/php/vendor/react/promise/LICENSE
@@ -0,0 +1,22 @@
+Copyright (c) 2012-2016 Jan Sorgalla
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
diff --git a/assets/php/vendor/react/promise/README.md b/assets/php/vendor/react/promise/README.md
new file mode 100644
index 0000000..9c0558c
--- /dev/null
+++ b/assets/php/vendor/react/promise/README.md
@@ -0,0 +1,840 @@
+React/Promise
+=============
+
+A lightweight implementation of
+[CommonJS Promises/A](http://wiki.commonjs.org/wiki/Promises/A) for PHP.
+
+[![Build Status](https://travis-ci.org/reactphp/promise.svg?branch=master)](http://travis-ci.org/reactphp/promise)
+[![Coverage Status](https://coveralls.io/repos/github/reactphp/promise/badge.svg?branch=master)](https://coveralls.io/github/reactphp/promise?branch=master)
+
+Table of Contents
+-----------------
+
+1. [Introduction](#introduction)
+2. [Concepts](#concepts)
+   * [Deferred](#deferred)
+   * [Promise](#promise)
+3. [API](#api)
+   * [Deferred](#deferred-1)
+     * [Deferred::promise()](#deferredpromise)
+     * [Deferred::resolve()](#deferredresolve)
+     * [Deferred::reject()](#deferredreject)
+     * [Deferred::notify()](#deferrednotify)
+   * [PromiseInterface](#promiseinterface)
+     * [PromiseInterface::then()](#promiseinterfacethen)
+   * [ExtendedPromiseInterface](#extendedpromiseinterface)
+        * [ExtendedPromiseInterface::done()](#extendedpromiseinterfacedone)
+        * [ExtendedPromiseInterface::otherwise()](#extendedpromiseinterfaceotherwise)
+        * [ExtendedPromiseInterface::always()](#extendedpromiseinterfacealways)
+        * [ExtendedPromiseInterface::progress()](#extendedpromiseinterfaceprogress)
+   * [CancellablePromiseInterface](#cancellablepromiseinterface)
+        * [CancellablePromiseInterface::cancel()](#cancellablepromiseinterfacecancel)
+   * [Promise](#promise-1)
+   * [FulfilledPromise](#fulfilledpromise)
+   * [RejectedPromise](#rejectedpromise)
+   * [LazyPromise](#lazypromise)
+   * [Functions](#functions)
+     * [resolve()](#resolve)
+     * [reject()](#reject)
+     * [all()](#all)
+     * [race()](#race)
+     * [any()](#any)
+     * [some()](#some)
+     * [map()](#map)
+     * [reduce()](#reduce)
+   * [PromisorInterface](#promisorinterface)
+4. [Examples](#examples)
+   * [How to use Deferred](#how-to-use-deferred)
+   * [How promise forwarding works](#how-promise-forwarding-works)
+     * [Resolution forwarding](#resolution-forwarding)
+     * [Rejection forwarding](#rejection-forwarding)
+     * [Mixed resolution and rejection forwarding](#mixed-resolution-and-rejection-forwarding)
+     * [Progress event forwarding](#progress-event-forwarding)
+   * [done() vs. then()](#done-vs-then)
+5. [Credits](#credits)
+6. [License](#license)
+
+Introduction
+------------
+
+React/Promise is a library implementing
+[CommonJS Promises/A](http://wiki.commonjs.org/wiki/Promises/A) for PHP.
+
+It also provides several other useful promise-related concepts, such as joining
+multiple promises and mapping and reducing collections of promises.
+
+If you've never heard about promises before,
+[read this first](https://gist.github.com/3889970).
+
+Concepts
+--------
+
+### Deferred
+
+A **Deferred** represents a computation or unit of work that may not have
+completed yet. Typically (but not always), that computation will be something
+that executes asynchronously and completes at some point in the future.
+
+### Promise
+
+While a deferred represents the computation itself, a **Promise** represents
+the result of that computation. Thus, each deferred has a promise that acts as
+a placeholder for its actual result.
+
+API
+---
+
+### Deferred
+
+A deferred represents an operation whose resolution is pending. It has separate
+promise and resolver parts.
+
+```php
+$deferred = new React\Promise\Deferred();
+
+$promise = $deferred->promise();
+
+$deferred->resolve(mixed $value = null);
+$deferred->reject(mixed $reason = null);
+$deferred->notify(mixed $update = null);
+```
+
+The `promise` method returns the promise of the deferred.
+
+The `resolve` and `reject` methods control the state of the deferred.
+
+The `notify` method is for progress notification.
+
+The constructor of the `Deferred` accepts an optional `$canceller` argument.
+See [Promise](#promise-1) for more information.
+
+#### Deferred::promise()
+
+```php
+$promise = $deferred->promise();
+```
+
+Returns the promise of the deferred, which you can hand out to others while
+keeping the authority to modify its state to yourself.
+
+#### Deferred::resolve()
+
+```php
+$deferred->resolve(mixed $value = null);
+```
+
+Resolves the promise returned by `promise()`. All consumers are notified by
+having `$onFulfilled` (which they registered via `$promise->then()`) called with
+`$value`.
+
+If `$value` itself is a promise, the promise will transition to the state of
+this promise once it is resolved.
+
+#### Deferred::reject()
+
+```php
+$deferred->reject(mixed $reason = null);
+```
+
+Rejects the promise returned by `promise()`, signalling that the deferred's
+computation failed.
+All consumers are notified by having `$onRejected` (which they registered via
+`$promise->then()`) called with `$reason`.
+
+If `$reason` itself is a promise, the promise will be rejected with the outcome
+of this promise regardless whether it fulfills or rejects.
+
+#### Deferred::notify()
+
+```php
+$deferred->notify(mixed $update = null);
+```
+
+Triggers progress notifications, to indicate to consumers that the computation
+is making progress toward its result.
+
+All consumers are notified by having `$onProgress` (which they registered via
+`$promise->then()`) called with `$update`.
+
+### PromiseInterface
+
+The promise interface provides the common interface for all promise
+implementations.
+
+A promise represents an eventual outcome, which is either fulfillment (success)
+and an associated value, or rejection (failure) and an associated reason.
+
+Once in the fulfilled or rejected state, a promise becomes immutable.
+Neither its state nor its result (or error) can be modified.
+
+#### Implementations
+
+* [Promise](#promise-1)
+* [FulfilledPromise](#fulfilledpromise)
+* [RejectedPromise](#rejectedpromise)
+* [LazyPromise](#lazypromise)
+
+#### PromiseInterface::then()
+
+```php
+$transformedPromise = $promise->then(callable $onFulfilled = null, callable $onRejected = null, callable $onProgress = null);
+```
+
+Transforms a promise's value by applying a function to the promise's fulfillment
+or rejection value. Returns a new promise for the transformed result.
+
+The `then()` method registers new fulfilled, rejection and progress handlers
+with a promise (all parameters are optional):
+
+  * `$onFulfilled` will be invoked once the promise is fulfilled and passed
+    the result as the first argument.
+  * `$onRejected` will be invoked once the promise is rejected and passed the
+    reason as the first argument.
+  * `$onProgress` will be invoked whenever the producer of the promise
+    triggers progress notifications and passed a single argument (whatever it
+    wants) to indicate progress.
+
+It returns a new promise that will fulfill with the return value of either
+`$onFulfilled` or `$onRejected`, whichever is called, or will reject with
+the thrown exception if either throws.
+
+A promise makes the following guarantees about handlers registered in
+the same call to `then()`:
+
+  1. Only one of `$onFulfilled` or `$onRejected` will be called,
+     never both.
+  2. `$onFulfilled` and `$onRejected` will never be called more
+     than once.
+  3. `$onProgress` may be called multiple times.
+
+#### See also
+
+* [resolve()](#resolve) - Creating a resolved promise
+* [reject()](#reject) - Creating a rejected promise
+* [ExtendedPromiseInterface::done()](#extendedpromiseinterfacedone)
+* [done() vs. then()](#done-vs-then)
+
+### ExtendedPromiseInterface
+
+The ExtendedPromiseInterface extends the PromiseInterface with useful shortcut
+and utility methods which are not part of the Promises/A specification.
+
+#### Implementations
+
+* [Promise](#promise-1)
+* [FulfilledPromise](#fulfilledpromise)
+* [RejectedPromise](#rejectedpromise)
+* [LazyPromise](#lazypromise)
+
+#### ExtendedPromiseInterface::done()
+
+```php
+$promise->done(callable $onFulfilled = null, callable $onRejected = null, callable $onProgress = null);
+```
+
+Consumes the promise's ultimate value if the promise fulfills, or handles the
+ultimate error.
+
+It will cause a fatal error if either `$onFulfilled` or `$onRejected` throw or
+return a rejected promise.
+
+Since the purpose of `done()` is consumption rather than transformation,
+`done()` always returns `null`.
+
+#### See also
+
+* [PromiseInterface::then()](#promiseinterfacethen)
+* [done() vs. then()](#done-vs-then)
+
+#### ExtendedPromiseInterface::otherwise()
+
+```php
+$promise->otherwise(callable $onRejected);
+```
+
+Registers a rejection handler for promise. It is a shortcut for:
+
+```php
+$promise->then(null, $onRejected);
+```
+
+Additionally, you can type hint the `$reason` argument of `$onRejected` to catch
+only specific errors.
+
+```php
+$promise
+    ->otherwise(function (\RuntimeException $reason) {
+        // Only catch \RuntimeException instances
+        // All other types of errors will propagate automatically
+    })
+    ->otherwise(function ($reason) {
+        // Catch other errors
+    )};
+```
+
+#### ExtendedPromiseInterface::always()
+
+```php
+$newPromise = $promise->always(callable $onFulfilledOrRejected);
+```
+
+Allows you to execute "cleanup" type tasks in a promise chain.
+
+It arranges for `$onFulfilledOrRejected` to be called, with no arguments,
+when the promise is either fulfilled or rejected.
+
+* If `$promise` fulfills, and `$onFulfilledOrRejected` returns successfully,
+  `$newPromise` will fulfill with the same value as `$promise`.
+* If `$promise` fulfills, and `$onFulfilledOrRejected` throws or returns a
+  rejected promise, `$newPromise` will reject with the thrown exception or
+  rejected promise's reason.
+* If `$promise` rejects, and `$onFulfilledOrRejected` returns successfully,
+  `$newPromise` will reject with the same reason as `$promise`.
+* If `$promise` rejects, and `$onFulfilledOrRejected` throws or returns a
+  rejected promise, `$newPromise` will reject with the thrown exception or
+  rejected promise's reason.
+
+`always()` behaves similarly to the synchronous finally statement. When combined
+with `otherwise()`, `always()` allows you to write code that is similar to the familiar
+synchronous catch/finally pair.
+
+Consider the following synchronous code:
+
+```php
+try {
+  return doSomething();
+} catch(\Exception $e) {
+    return handleError($e);
+} finally {
+    cleanup();
+}
+```
+
+Similar asynchronous code (with `doSomething()` that returns a promise) can be
+written:
+
+```php
+return doSomething()
+    ->otherwise('handleError')
+    ->always('cleanup');
+```
+
+#### ExtendedPromiseInterface::progress()
+
+```php
+$promise->progress(callable $onProgress);
+```
+
+Registers a handler for progress updates from promise. It is a shortcut for:
+
+```php
+$promise->then(null, null, $onProgress);
+```
+
+### CancellablePromiseInterface
+
+A cancellable promise provides a mechanism for consumers to notify the creator
+of the promise that they are not longer interested in the result of an
+operation.
+
+#### CancellablePromiseInterface::cancel()
+
+``` php
+$promise->cancel();
+```
+
+The `cancel()` method notifies the creator of the promise that there is no
+further interest in the results of the operation.
+
+Once a promise is settled (either fulfilled or rejected), calling `cancel()` on
+a promise has no effect.
+
+#### Implementations
+
+* [Promise](#promise-1)
+* [FulfilledPromise](#fulfilledpromise)
+* [RejectedPromise](#rejectedpromise)
+* [LazyPromise](#lazypromise)
+
+### Promise
+
+Creates a promise whose state is controlled by the functions passed to
+`$resolver`.
+
+```php
+$resolver = function (callable $resolve, callable $reject, callable $notify) {
+    // Do some work, possibly asynchronously, and then
+    // resolve or reject. You can notify of progress events
+    // along the way if you want/need.
+
+    $resolve($awesomeResult);
+    // or $resolve($anotherPromise);
+    // or $reject($nastyError);
+    // or $notify($progressNotification);
+};
+
+$canceller = function (callable $resolve, callable $reject, callable $progress) {
+    // Cancel/abort any running operations like network connections, streams etc.
+
+    $reject(new \Exception('Promise cancelled'));
+};
+
+$promise = new React\Promise\Promise($resolver, $canceller);
+```
+
+The promise constructor receives a resolver function and an optional canceller
+function which both will be called with 3 arguments:
+
+  * `$resolve($value)` - Primary function that seals the fate of the
+    returned promise. Accepts either a non-promise value, or another promise.
+    When called with a non-promise value, fulfills promise with that value.
+    When called with another promise, e.g. `$resolve($otherPromise)`, promise's
+    fate will be equivalent to that of `$otherPromise`.
+  * `$reject($reason)` - Function that rejects the promise.
+  * `$notify($update)` - Function that issues progress events for the promise.
+
+If the resolver or canceller throw an exception, the promise will be rejected
+with that thrown exception as the rejection reason.
+
+The resolver function will be called immediately, the canceller function only
+once all consumers called the `cancel()` method of the promise.
+
+### FulfilledPromise
+
+Creates a already fulfilled promise.
+
+```php
+$promise = React\Promise\FulfilledPromise($value);
+```
+
+Note, that `$value` **cannot** be a promise. It's recommended to use
+[resolve()](#resolve) for creating resolved promises.
+
+### RejectedPromise
+
+Creates a already rejected promise.
+
+```php
+$promise = React\Promise\RejectedPromise($reason);
+```
+
+Note, that `$reason` **cannot** be a promise. It's recommended to use
+[reject()](#reject) for creating rejected promises.
+
+### LazyPromise
+
+Creates a promise which will be lazily initialized by `$factory` once a consumer
+calls the `then()` method.
+
+```php
+$factory = function () {
+    $deferred = new React\Promise\Deferred();
+
+    // Do some heavy stuff here and resolve the deferred once completed
+
+    return $deferred->promise();
+};
+
+$promise = React\Promise\LazyPromise($factory);
+
+// $factory will only be executed once we call then()
+$promise->then(function ($value) {
+});
+```
+
+### Functions
+
+Useful functions for creating, joining, mapping and reducing collections of
+promises.
+
+All functions working on promise collections (like `all()`, `race()`, `some()`
+etc.) support cancellation. This means, if you call `cancel()` on the returned
+promise, all promises in the collection are cancelled. If the collection itself
+is a promise which resolves to an array, this promise is also cancelled.
+
+#### resolve()
+
+```php
+$promise = React\Promise\resolve(mixed $promiseOrValue);
+```
+
+Creates a promise for the supplied `$promiseOrValue`.
+
+If `$promiseOrValue` is a value, it will be the resolution value of the
+returned promise.
+
+If `$promiseOrValue` is a thenable (any object that provides a `then()` method),
+a trusted promise that follows the state of the thenable is returned.
+
+If `$promiseOrValue` is a promise, it will be returned as is.
+
+Note: The promise returned is always a promise implementing
+[ExtendedPromiseInterface](#extendedpromiseinterface). If you pass in a custom
+promise which only implements [PromiseInterface](#promiseinterface), this
+promise will be assimilated to a extended promise following `$promiseOrValue`.
+
+#### reject()
+
+```php
+$promise = React\Promise\reject(mixed $promiseOrValue);
+```
+
+Creates a rejected promise for the supplied `$promiseOrValue`.
+
+If `$promiseOrValue` is a value, it will be the rejection value of the
+returned promise.
+
+If `$promiseOrValue` is a promise, its completion value will be the rejected
+value of the returned promise.
+
+This can be useful in situations where you need to reject a promise without
+throwing an exception. For example, it allows you to propagate a rejection with
+the value of another promise.
+
+#### all()
+
+```php
+$promise = React\Promise\all(array|React\Promise\PromiseInterface $promisesOrValues);
+```
+
+Returns a promise that will resolve only once all the items in
+`$promisesOrValues` have resolved. The resolution value of the returned promise
+will be an array containing the resolution values of each of the items in
+`$promisesOrValues`.
+
+#### race()
+
+```php
+$promise = React\Promise\race(array|React\Promise\PromiseInterface $promisesOrValues);
+```
+
+Initiates a competitive race that allows one winner. Returns a promise which is
+resolved in the same way the first settled promise resolves.
+
+#### any()
+
+```php
+$promise = React\Promise\any(array|React\Promise\PromiseInterface $promisesOrValues);
+```
+
+Returns a promise that will resolve when any one of the items in
+`$promisesOrValues` resolves. The resolution value of the returned promise
+will be the resolution value of the triggering item.
+
+The returned promise will only reject if *all* items in `$promisesOrValues` are
+rejected. The rejection value will be an array of all rejection reasons.
+
+The returned promise will also reject with a `React\Promise\Exception\LengthException`
+if `$promisesOrValues` contains 0 items.
+
+#### some()
+
+```php
+$promise = React\Promise\some(array|React\Promise\PromiseInterface $promisesOrValues, integer $howMany);
+```
+
+Returns a promise that will resolve when `$howMany` of the supplied items in
+`$promisesOrValues` resolve. The resolution value of the returned promise
+will be an array of length `$howMany` containing the resolution values of the
+triggering items.
+
+The returned promise will reject if it becomes impossible for `$howMany` items
+to resolve (that is, when `(count($promisesOrValues) - $howMany) + 1` items
+reject). The rejection value will be an array of
+`(count($promisesOrValues) - $howMany) + 1` rejection reasons.
+
+The returned promise will also reject with a `React\Promise\Exception\LengthException`
+if `$promisesOrValues` contains less items than `$howMany`.
+
+#### map()
+
+```php
+$promise = React\Promise\map(array|React\Promise\PromiseInterface $promisesOrValues, callable $mapFunc);
+```
+
+Traditional map function, similar to `array_map()`, but allows input to contain
+promises and/or values, and `$mapFunc` may return either a value or a promise.
+
+The map function receives each item as argument, where item is a fully resolved
+value of a promise or value in `$promisesOrValues`.
+
+#### reduce()
+
+```php
+$promise = React\Promise\reduce(array|React\Promise\PromiseInterface $promisesOrValues, callable $reduceFunc , $initialValue = null);
+```
+
+Traditional reduce function, similar to `array_reduce()`, but input may contain
+promises and/or values, and `$reduceFunc` may return either a value or a
+promise, *and* `$initialValue` may be a promise or a value for the starting
+value.
+
+### PromisorInterface
+
+The `React\Promise\PromisorInterface` provides a common interface for objects
+that provide a promise. `React\Promise\Deferred` implements it, but since it
+is part of the public API anyone can implement it.
+
+Examples
+--------
+
+### How to use Deferred
+
+```php
+function getAwesomeResultPromise()
+{
+    $deferred = new React\Promise\Deferred();
+
+    // Execute a Node.js-style function using the callback pattern
+    computeAwesomeResultAsynchronously(function ($error, $result) use ($deferred) {
+        if ($error) {
+            $deferred->reject($error);
+        } else {
+            $deferred->resolve($result);
+        }
+    });
+
+    // Return the promise
+    return $deferred->promise();
+}
+
+getAwesomeResultPromise()
+    ->then(
+        function ($value) {
+            // Deferred resolved, do something with $value
+        },
+        function ($reason) {
+            // Deferred rejected, do something with $reason
+        },
+        function ($update) {
+            // Progress notification triggered, do something with $update
+        }
+    );
+```
+
+### How promise forwarding works
+
+A few simple examples to show how the mechanics of Promises/A forwarding works.
+These examples are contrived, of course, and in real usage, promise chains will
+typically be spread across several function calls, or even several levels of
+your application architecture.
+
+#### Resolution forwarding
+
+Resolved promises forward resolution values to the next promise.
+The first promise, `$deferred->promise()`, will resolve with the value passed
+to `$deferred->resolve()` below.
+
+Each call to `then()` returns a new promise that will resolve with the return
+value of the previous handler. This creates a promise "pipeline".
+
+```php
+$deferred = new React\Promise\Deferred();
+
+$deferred->promise()
+    ->then(function ($x) {
+        // $x will be the value passed to $deferred->resolve() below
+        // and returns a *new promise* for $x + 1
+        return $x + 1;
+    })
+    ->then(function ($x) {
+        // $x === 2
+        // This handler receives the return value of the
+        // previous handler.
+        return $x + 1;
+    })
+    ->then(function ($x) {
+        // $x === 3
+        // This handler receives the return value of the
+        // previous handler.
+        return $x + 1;
+    })
+    ->then(function ($x) {
+        // $x === 4
+        // This handler receives the return value of the
+        // previous handler.
+        echo 'Resolve ' . $x;
+    });
+
+$deferred->resolve(1); // Prints "Resolve 4"
+```
+
+#### Rejection forwarding
+
+Rejected promises behave similarly, and also work similarly to try/catch:
+When you catch an exception, you must rethrow for it to propagate.
+
+Similarly, when you handle a rejected promise, to propagate the rejection,
+"rethrow" it by either returning a rejected promise, or actually throwing
+(since promise translates thrown exceptions into rejections)
+
+```php
+$deferred = new React\Promise\Deferred();
+
+$deferred->promise()
+    ->then(function ($x) {
+        throw new \Exception($x + 1);
+    })
+    ->otherwise(function (\Exception $x) {
+        // Propagate the rejection
+        throw $x;
+    })
+    ->otherwise(function (\Exception $x) {
+        // Can also propagate by returning another rejection
+        return React\Promise\reject(
+            new \Exception($x->getMessage() + 1)
+        );
+    })
+    ->otherwise(function ($x) {
+        echo 'Reject ' . $x->getMessage(); // 3
+    });
+
+$deferred->resolve(1);  // Prints "Reject 3"
+```
+
+#### Mixed resolution and rejection forwarding
+
+Just like try/catch, you can choose to propagate or not. Mixing resolutions and
+rejections will still forward handler results in a predictable way.
+
+```php
+$deferred = new React\Promise\Deferred();
+
+$deferred->promise()
+    ->then(function ($x) {
+        return $x + 1;
+    })
+    ->then(function ($x) {
+        throw new \Exception($x + 1);
+    })
+    ->otherwise(function (\Exception $x) {
+        // Handle the rejection, and don't propagate.
+        // This is like catch without a rethrow
+        return $x->getMessage() + 1;
+    })
+    ->then(function ($x) {
+        echo 'Mixed ' . $x; // 4
+    });
+
+$deferred->resolve(1);  // Prints "Mixed 4"
+```
+
+#### Progress event forwarding
+
+In the same way as resolution and rejection handlers, your progress handler
+**MUST** return a progress event to be propagated to the next link in the chain.
+If you return nothing, `null` will be propagated.
+
+Also in the same way as resolutions and rejections, if you don't register a
+progress handler, the update will be propagated through.
+
+If your progress handler throws an exception, the exception will be propagated
+to the next link in the chain. The best thing to do is to ensure your progress
+handlers do not throw exceptions.
+
+This gives you the opportunity to transform progress events at each step in the
+chain so that they are meaningful to the next step. It also allows you to choose
+not to transform them, and simply let them propagate untransformed, by not
+registering a progress handler.
+
+```php
+$deferred = new React\Promise\Deferred();
+
+$deferred->promise()
+    ->progress(function ($update) {
+        return $update + 1;
+    })
+    ->progress(function ($update) {
+        echo 'Progress ' . $update; // 2
+    });
+
+$deferred->notify(1);  // Prints "Progress 2"
+```
+
+### done() vs. then()
+
+The golden rule is:
+
+    Either return your promise, or call done() on it.
+
+At a first glance, `then()` and `done()` seem very similar. However, there are
+important distinctions.
+
+The intent of `then()` is to transform a promise's value and to pass or return
+a new promise for the transformed value along to other parts of your code.
+
+The intent of `done()` is to consume a promise's value, transferring
+responsibility for the value to your code.
+
+In addition to transforming a value, `then()` allows you to recover from, or
+propagate intermediate errors. Any errors that are not handled will be caught
+by the promise machinery and used to reject the promise returned by `then()`.
+
+Calling `done()` transfers all responsibility for errors to your code. If an
+error (either a thrown exception or returned rejection) escapes the
+`$onFulfilled` or `$onRejected` callbacks you provide to done, it will be
+rethrown in an uncatchable way causing a fatal error.
+
+```php
+function getJsonResult()
+{
+    return queryApi()
+        ->then(
+            // Transform API results to an object
+            function ($jsonResultString) {
+                return json_decode($jsonResultString);
+            },
+            // Transform API errors to an exception
+            function ($jsonErrorString) {
+                $object = json_decode($jsonErrorString);
+                throw new ApiErrorException($object->errorMessage);
+            }
+        );
+}
+
+// Here we provide no rejection handler. If the promise returned has been
+// rejected, the ApiErrorException will be thrown
+getJsonResult()
+    ->done(
+        // Consume transformed object
+        function ($jsonResultObject) {
+            // Do something with $jsonResultObject
+        }
+    );
+
+// Here we provide a rejection handler which will either throw while debugging
+// or log the exception
+getJsonResult()
+    ->done(
+        function ($jsonResultObject) {
+            // Do something with $jsonResultObject
+        },
+        function (ApiErrorException $exception) {
+            if (isDebug()) {
+                throw $exception;
+            } else {
+                logException($exception);
+            }
+        }
+    );
+```
+
+Note that if a rejection value is not an instance of `\Exception`, it will be
+wrapped in an exception of the type `React\Promise\UnhandledRejectionException`.
+
+You can get the original rejection reason by calling `$exception->getReason()`.
+
+Credits
+-------
+
+React/Promise is a port of [when.js](https://github.com/cujojs/when)
+by [Brian Cavalier](https://github.com/briancavalier).
+
+Also, large parts of the documentation have been ported from the when.js
+[Wiki](https://github.com/cujojs/when/wiki) and the
+[API docs](https://github.com/cujojs/when/blob/master/docs/api.md).
+
+License
+-------
+
+React/Promise is released under the [MIT](https://github.com/reactphp/promise/blob/master/LICENSE) license.
diff --git a/assets/php/vendor/react/promise/composer.json b/assets/php/vendor/react/promise/composer.json
new file mode 100644
index 0000000..2fc4809
--- /dev/null
+++ b/assets/php/vendor/react/promise/composer.json
@@ -0,0 +1,29 @@
+{
+    "name": "react/promise",
+    "description": "A lightweight implementation of CommonJS Promises/A for PHP",
+    "license": "MIT",
+    "authors": [
+        {"name": "Jan Sorgalla", "email": "jsorgalla@gmail.com"}
+    ],
+    "require": {
+        "php": ">=5.4.0"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "~4.8"
+    },
+    "autoload": {
+        "psr-4": {
+            "React\\Promise\\": "src/"
+        },
+        "files": ["src/functions_include.php"]
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "React\\Promise\\": "tests/fixtures"
+        }
+    },
+    "keywords": [
+        "promise",
+        "promises"
+    ]
+}
diff --git a/assets/php/vendor/react/promise/phpunit.xml.dist b/assets/php/vendor/react/promise/phpunit.xml.dist
new file mode 100644
index 0000000..b9a689d
--- /dev/null
+++ b/assets/php/vendor/react/promise/phpunit.xml.dist
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit backupGlobals="false"
+         backupStaticAttributes="false"
+         colors="true"
+         convertErrorsToExceptions="true"
+         convertNoticesToExceptions="true"
+         convertWarningsToExceptions="true"
+         processIsolation="false"
+         stopOnFailure="false"
+         syntaxCheck="false"
+         bootstrap="tests/bootstrap.php"
+>
+    <testsuites>
+        <testsuite name="Promise Test Suite">
+            <directory>./tests/</directory>
+        </testsuite>
+    </testsuites>
+
+    <filter>
+        <whitelist>
+            <directory>./src/</directory>
+            <exclude>
+                <file>./src/functions_include.php</file>
+            </exclude>
+        </whitelist>
+    </filter>
+</phpunit>
diff --git a/assets/php/vendor/react/promise/src/CancellablePromiseInterface.php b/assets/php/vendor/react/promise/src/CancellablePromiseInterface.php
new file mode 100644
index 0000000..896db2d
--- /dev/null
+++ b/assets/php/vendor/react/promise/src/CancellablePromiseInterface.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace React\Promise;
+
+interface CancellablePromiseInterface extends PromiseInterface
+{
+    /**
+     * @return void
+     */
+    public function cancel();
+}
diff --git a/assets/php/vendor/react/promise/src/CancellationQueue.php b/assets/php/vendor/react/promise/src/CancellationQueue.php
new file mode 100644
index 0000000..a366994
--- /dev/null
+++ b/assets/php/vendor/react/promise/src/CancellationQueue.php
@@ -0,0 +1,55 @@
+<?php
+
+namespace React\Promise;
+
+class CancellationQueue
+{
+    private $started = false;
+    private $queue = [];
+
+    public function __invoke()
+    {
+        if ($this->started) {
+            return;
+        }
+
+        $this->started = true;
+        $this->drain();
+    }
+
+    public function enqueue($cancellable)
+    {
+        if (!method_exists($cancellable, 'then') || !method_exists($cancellable, 'cancel')) {
+            return;
+        }
+
+        $length = array_push($this->queue, $cancellable);
+
+        if ($this->started && 1 === $length) {
+            $this->drain();
+        }
+    }
+
+    private function drain()
+    {
+        for ($i = key($this->queue); isset($this->queue[$i]); $i++) {
+            $cancellable = $this->queue[$i];
+
+            $exception = null;
+
+            try {
+                $cancellable->cancel();
+            } catch (\Throwable $exception) {
+            } catch (\Exception $exception) {
+            }
+
+            unset($this->queue[$i]);
+
+            if ($exception) {
+                throw $exception;
+            }
+        }
+
+        $this->queue = [];
+    }
+}
diff --git a/assets/php/vendor/react/promise/src/Deferred.php b/assets/php/vendor/react/promise/src/Deferred.php
new file mode 100644
index 0000000..f23980c
--- /dev/null
+++ b/assets/php/vendor/react/promise/src/Deferred.php
@@ -0,0 +1,60 @@
+<?php
+
+namespace React\Promise;
+
+class Deferred implements PromisorInterface
+{
+    private $promise;
+    private $resolveCallback;
+    private $rejectCallback;
+    private $notifyCallback;
+    private $canceller;
+
+    public function __construct(callable $canceller = null)
+    {
+        $this->canceller = $canceller;
+    }
+
+    public function promise()
+    {
+        if (null === $this->promise) {
+            $this->promise = new Promise(function ($resolve, $reject, $notify) {
+                $this->resolveCallback = $resolve;
+                $this->rejectCallback  = $reject;
+                $this->notifyCallback  = $notify;
+            }, $this->canceller);
+        }
+
+        return $this->promise;
+    }
+
+    public function resolve($value = null)
+    {
+        $this->promise();
+
+        call_user_func($this->resolveCallback, $value);
+    }
+
+    public function reject($reason = null)
+    {
+        $this->promise();
+
+        call_user_func($this->rejectCallback, $reason);
+    }
+
+    public function notify($update = null)
+    {
+        $this->promise();
+
+        call_user_func($this->notifyCallback, $update);
+    }
+
+    /**
+     * @deprecated 2.2.0
+     * @see Deferred::notify()
+     */
+    public function progress($update = null)
+    {
+        $this->notify($update);
+    }
+}
diff --git a/assets/php/vendor/react/promise/src/Exception/LengthException.php b/assets/php/vendor/react/promise/src/Exception/LengthException.php
new file mode 100644
index 0000000..775c48d
--- /dev/null
+++ b/assets/php/vendor/react/promise/src/Exception/LengthException.php
@@ -0,0 +1,7 @@
+<?php
+
+namespace React\Promise\Exception;
+
+class LengthException extends \LengthException
+{
+}
diff --git a/assets/php/vendor/react/promise/src/ExtendedPromiseInterface.php b/assets/php/vendor/react/promise/src/ExtendedPromiseInterface.php
new file mode 100644
index 0000000..9cb6435
--- /dev/null
+++ b/assets/php/vendor/react/promise/src/ExtendedPromiseInterface.php
@@ -0,0 +1,26 @@
+<?php
+
+namespace React\Promise;
+
+interface ExtendedPromiseInterface extends PromiseInterface
+{
+    /**
+     * @return void
+     */
+    public function done(callable $onFulfilled = null, callable $onRejected = null, callable $onProgress = null);
+
+    /**
+     * @return ExtendedPromiseInterface
+     */
+    public function otherwise(callable $onRejected);
+
+    /**
+     * @return ExtendedPromiseInterface
+     */
+    public function always(callable $onFulfilledOrRejected);
+
+    /**
+     * @return ExtendedPromiseInterface
+     */
+    public function progress(callable $onProgress);
+}
diff --git a/assets/php/vendor/react/promise/src/FulfilledPromise.php b/assets/php/vendor/react/promise/src/FulfilledPromise.php
new file mode 100644
index 0000000..914bb5c
--- /dev/null
+++ b/assets/php/vendor/react/promise/src/FulfilledPromise.php
@@ -0,0 +1,68 @@
+<?php
+
+namespace React\Promise;
+
+class FulfilledPromise implements ExtendedPromiseInterface, CancellablePromiseInterface
+{
+    private $value;
+
+    public function __construct($value = null)
+    {
+        if ($value instanceof PromiseInterface) {
+            throw new \InvalidArgumentException('You cannot create React\Promise\FulfilledPromise with a promise. Use React\Promise\resolve($promiseOrValue) instead.');
+        }
+
+        $this->value = $value;
+    }
+
+    public function then(callable $onFulfilled = null, callable $onRejected = null, callable $onProgress = null)
+    {
+        if (null === $onFulfilled) {
+            return $this;
+        }
+
+        try {
+            return resolve($onFulfilled($this->value));
+        } catch (\Throwable $exception) {
+            return new RejectedPromise($exception);
+        } catch (\Exception $exception) {
+            return new RejectedPromise($exception);
+        }
+    }
+
+    public function done(callable $onFulfilled = null, callable $onRejected = null, callable $onProgress = null)
+    {
+        if (null === $onFulfilled) {
+            return;
+        }
+
+        $result = $onFulfilled($this->value);
+
+        if ($result instanceof ExtendedPromiseInterface) {
+            $result->done();
+        }
+    }
+
+    public function otherwise(callable $onRejected)
+    {
+        return $this;
+    }
+
+    public function always(callable $onFulfilledOrRejected)
+    {
+        return $this->then(function ($value) use ($onFulfilledOrRejected) {
+            return resolve($onFulfilledOrRejected())->then(function () use ($value) {
+                return $value;
+            });
+        });
+    }
+
+    public function progress(callable $onProgress)
+    {
+        return $this;
+    }
+
+    public function cancel()
+    {
+    }
+}
diff --git a/assets/php/vendor/react/promise/src/LazyPromise.php b/assets/php/vendor/react/promise/src/LazyPromise.php
new file mode 100644
index 0000000..7e3a3d3
--- /dev/null
+++ b/assets/php/vendor/react/promise/src/LazyPromise.php
@@ -0,0 +1,63 @@
+<?php
+
+namespace React\Promise;
+
+class LazyPromise implements ExtendedPromiseInterface, CancellablePromiseInterface
+{
+    private $factory;
+    private $promise;
+
+    public function __construct(callable $factory)
+    {
+        $this->factory = $factory;
+    }
+
+    public function then(callable $onFulfilled = null, callable $onRejected = null, callable $onProgress = null)
+    {
+        return $this->promise()->then($onFulfilled, $onRejected, $onProgress);
+    }
+
+    public function done(callable $onFulfilled = null, callable $onRejected = null, callable $onProgress = null)
+    {
+        return $this->promise()->done($onFulfilled, $onRejected, $onProgress);
+    }
+
+    public function otherwise(callable $onRejected)
+    {
+        return $this->promise()->otherwise($onRejected);
+    }
+
+    public function always(callable $onFulfilledOrRejected)
+    {
+        return $this->promise()->always($onFulfilledOrRejected);
+    }
+
+    public function progress(callable $onProgress)
+    {
+        return $this->promise()->progress($onProgress);
+    }
+
+    public function cancel()
+    {
+        return $this->promise()->cancel();
+    }
+
+    /**
+     * @internal
+     * @see Promise::settle()
+     */
+    public function promise()
+    {
+        if (null === $this->promise) {
+            try {
+                $this->promise = resolve(call_user_func($this->factory));
+            } catch (\Throwable $exception) {
+                $this->promise = new RejectedPromise($exception);
+            } catch (\Exception $exception) {
+                $this->promise = new RejectedPromise($exception);
+            }
+        }
+
+        return $this->promise;
+    }
+}
diff --git a/assets/php/vendor/react/promise/src/Promise.php b/assets/php/vendor/react/promise/src/Promise.php
new file mode 100644
index 0000000..0261eb3
--- /dev/null
+++ b/assets/php/vendor/react/promise/src/Promise.php
@@ -0,0 +1,216 @@
+<?php
+
+namespace React\Promise;
+
+class Promise implements ExtendedPromiseInterface, CancellablePromiseInterface
+{
+    private $canceller;
+    private $result;
+
+    private $handlers = [];
+    private $progressHandlers = [];
+
+    private $requiredCancelRequests = 0;
+    private $cancelRequests = 0;
+
+    public function __construct(callable $resolver, callable $canceller = null)
+    {
+        $this->canceller = $canceller;
+        $this->call($resolver);
+    }
+
+    public function then(callable $onFulfilled = null, callable $onRejected = null, callable $onProgress = null)
+    {
+        if (null !== $this->result) {
+            return $this->result->then($onFulfilled, $onRejected, $onProgress);
+        }
+
+        if (null === $this->canceller) {
+            return new static($this->resolver($onFulfilled, $onRejected, $onProgress));
+        }
+
+        $this->requiredCancelRequests++;
+
+        return new static($this->resolver($onFulfilled, $onRejected, $onProgress), function () {
+            if (++$this->cancelRequests < $this->requiredCancelRequests) {
+                return;
+            }
+
+            $this->cancel();
+        });
+    }
+
+    public function done(callable $onFulfilled = null, callable $onRejected = null, callable $onProgress = null)
+    {
+        if (null !== $this->result) {
+            return $this->result->done($onFulfilled, $onRejected, $onProgress);
+        }
+
+        $this->handlers[] = function (ExtendedPromiseInterface $promise) use ($onFulfilled, $onRejected) {
+            $promise
+                ->done($onFulfilled, $onRejected);
+        };
+
+        if ($onProgress) {
+            $this->progressHandlers[] = $onProgress;
+        }
+    }
+
+    public function otherwise(callable $onRejected)
+    {
+        return $this->then(null, function ($reason) use ($onRejected) {
+            if (!_checkTypehint($onRejected, $reason)) {
+                return new RejectedPromise($reason);
+            }
+
+            return $onRejected($reason);
+        });
+    }
+
+    public function always(callable $onFulfilledOrRejected)
+    {
+        return $this->then(function ($value) use ($onFulfilledOrRejected) {
+            return resolve($onFulfilledOrRejected())->then(function () use ($value) {
+                return $value;
+            });
+        }, function ($reason) use ($onFulfilledOrRejected) {
+            return resolve($onFulfilledOrRejected())->then(function () use ($reason) {
+                return new RejectedPromise($reason);
+            });
+        });
+    }
+
+    public function progress(callable $onProgress)
+    {
+        return $this->then(null, null, $onProgress);
+    }
+
+    public function cancel()
+    {
+        if (null === $this->canceller || null !== $this->result) {
+            return;
+        }
+
+        $canceller = $this->canceller;
+        $this->canceller = null;
+
+        $this->call($canceller);
+    }
+
+    private function resolver(callable $onFulfilled = null, callable $onRejected = null, callable $onProgress = null)
+    {
+        return function ($resolve, $reject, $notify) use ($onFulfilled, $onRejected, $onProgress) {
+            if ($onProgress) {
+                $progressHandler = function ($update) use ($notify, $onProgress) {
+                    try {
+                        $notify($onProgress($update));
+                    } catch (\Throwable $e) {
+                        $notify($e);
+                    } catch (\Exception $e) {
+                        $notify($e);
+                    }
+                };
+            } else {
+                $progressHandler = $notify;
+            }
+
+            $this->handlers[] = function (ExtendedPromiseInterface $promise) use ($onFulfilled, $onRejected, $resolve, $reject, $progressHandler) {
+                $promise
+                    ->then($onFulfilled, $onRejected)
+                    ->done($resolve, $reject, $progressHandler);
+            };
+
+            $this->progressHandlers[] = $progressHandler;
+        };
+    }
+
+    private function resolve($value = null)
+    {
+        if (null !== $this->result) {
+            return;
+        }
+
+        $this->settle(resolve($value));
+    }
+
+    private function reject($reason = null)
+    {
+        if (null !== $this->result) {
+            return;
+        }
+
+        $this->settle(reject($reason));
+    }
+
+    private function notify($update = null)
+    {
+        if (null !== $this->result) {
+            return;
+        }
+
+        foreach ($this->progressHandlers as $handler) {
+            $handler($update);
+        }
+    }
+
+    private function settle(ExtendedPromiseInterface $promise)
+    {
+        $promise = $this->unwrap($promise);
+
+        $handlers = $this->handlers;
+
+        $this->progressHandlers = $this->handlers = [];
+        $this->result = $promise;
+
+        foreach ($handlers as $handler) {
+            $handler($promise);
+        }
+    }
+
+    private function unwrap($promise)
+    {
+        $promise = $this->extract($promise);
+
+        while ($promise instanceof self && null !== $promise->result) {
+            $promise = $this->extract($promise->result);
+        }
+
+        return $promise;
+    }
+
+    private function extract($promise)
+    {
+        if ($promise instanceof LazyPromise) {
+            $promise = $promise->promise();
+        }
+
+        if ($promise === $this) {
+            return new RejectedPromise(
+                new \LogicException('Cannot resolve a promise with itself.')
+            );
+        }
+
+        return $promise;
+    }
+
+    private function call(callable $callback)
+    {
+        try {
+            $callback(
+                function ($value = null) {
+                    $this->resolve($value);
+                },
+                function ($reason = null) {
+                    $this->reject($reason);
+                },
+                function ($update = null) {
+                    $this->notify($update);
+                }
+            );
+        } catch (\Throwable $e) {
+            $this->reject($e);
+        } catch (\Exception $e) {
+            $this->reject($e);
+        }
+    }
+}
diff --git a/assets/php/vendor/react/promise/src/PromiseInterface.php b/assets/php/vendor/react/promise/src/PromiseInterface.php
new file mode 100644
index 0000000..d80d114
--- /dev/null
+++ b/assets/php/vendor/react/promise/src/PromiseInterface.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace React\Promise;
+
+interface PromiseInterface
+{
+    /**
+     * @return PromiseInterface
+     */
+    public function then(callable $onFulfilled = null, callable $onRejected = null, callable $onProgress = null);
+}
diff --git a/assets/php/vendor/react/promise/src/PromisorInterface.php b/assets/php/vendor/react/promise/src/PromisorInterface.php
new file mode 100644
index 0000000..9341a4f
--- /dev/null
+++ b/assets/php/vendor/react/promise/src/PromisorInterface.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace React\Promise;
+
+interface PromisorInterface
+{
+    /**
+     * @return PromiseInterface
+     */
+    public function promise();
+}
diff --git a/assets/php/vendor/react/promise/src/RejectedPromise.php b/assets/php/vendor/react/promise/src/RejectedPromise.php
new file mode 100644
index 0000000..479a746
--- /dev/null
+++ b/assets/php/vendor/react/promise/src/RejectedPromise.php
@@ -0,0 +1,76 @@
+<?php
+
+namespace React\Promise;
+
+class RejectedPromise implements ExtendedPromiseInterface, CancellablePromiseInterface
+{
+    private $reason;
+
+    public function __construct($reason = null)
+    {
+        if ($reason instanceof PromiseInterface) {
+            throw new \InvalidArgumentException('You cannot create React\Promise\RejectedPromise with a promise. Use React\Promise\reject($promiseOrValue) instead.');
+        }
+
+        $this->reason = $reason;
+    }
+
+    public function then(callable $onFulfilled = null, callable $onRejected = null, callable $onProgress = null)
+    {
+        if (null === $onRejected) {
+            return $this;
+        }
+
+        try {
+            return resolve($onRejected($this->reason));
+        } catch (\Throwable $exception) {
+            return new RejectedPromise($exception);
+        } catch (\Exception $exception) {
+            return new RejectedPromise($exception);
+        }
+    }
+
+    public function done(callable $onFulfilled = null, callable $onRejected = null, callable $onProgress = null)
+    {
+        if (null === $onRejected) {
+            throw UnhandledRejectionException::resolve($this->reason);
+        }
+
+        $result = $onRejected($this->reason);
+
+        if ($result instanceof self) {
+            throw UnhandledRejectionException::resolve($result->reason);
+        }
+
+        if ($result instanceof ExtendedPromiseInterface) {
+            $result->done();
+        }
+    }
+
+    public function otherwise(callable $onRejected)
+    {
+        if (!_checkTypehint($onRejected, $this->reason)) {
+            return $this;
+        }
+
+        return $this->then(null, $onRejected);
+    }
+
+    public function always(callable $onFulfilledOrRejected)
+    {
+        return $this->then(null, function ($reason) use ($onFulfilledOrRejected) {
+            return resolve($onFulfilledOrRejected())->then(function () use ($reason) {
+                return new RejectedPromise($reason);
+            });
+        });
+    }
+
+    public function progress(callable $onProgress)
+    {
+        return $this;
+    }
+
+    public function cancel()
+    {
+    }
+}
diff --git a/assets/php/vendor/react/promise/src/UnhandledRejectionException.php b/assets/php/vendor/react/promise/src/UnhandledRejectionException.php
new file mode 100644
index 0000000..a44b7a1
--- /dev/null
+++ b/assets/php/vendor/react/promise/src/UnhandledRejectionException.php
@@ -0,0 +1,31 @@
+<?php
+
+namespace React\Promise;
+
+class UnhandledRejectionException extends \RuntimeException
+{
+    private $reason;
+
+    public static function resolve($reason)
+    {
+        if ($reason instanceof \Exception || $reason instanceof \Throwable) {
+            return $reason;
+        }
+
+        return new static($reason);
+    }
+
+    public function __construct($reason)
+    {
+        $this->reason = $reason;
+
+        $message = sprintf('Unhandled Rejection: %s', json_encode($reason));
+
+        parent::__construct($message, 0);
+    }
+
+    public function getReason()
+    {
+        return $this->reason;
+    }
+}
diff --git a/assets/php/vendor/react/promise/src/functions.php b/assets/php/vendor/react/promise/src/functions.php
new file mode 100644
index 0000000..70c0eb7
--- /dev/null
+++ b/assets/php/vendor/react/promise/src/functions.php
@@ -0,0 +1,244 @@
+<?php
+
+namespace React\Promise;
+
+function resolve($promiseOrValue = null)
+{
+    if ($promiseOrValue instanceof ExtendedPromiseInterface) {
+        return $promiseOrValue;
+    }
+
+    if (method_exists($promiseOrValue, 'then')) {
+        $canceller = null;
+
+        if (method_exists($promiseOrValue, 'cancel')) {
+            $canceller = [$promiseOrValue, 'cancel'];
+        }
+
+        return new Promise(function ($resolve, $reject, $notify) use ($promiseOrValue) {
+            $promiseOrValue->then($resolve, $reject, $notify);
+        }, $canceller);
+    }
+
+    return new FulfilledPromise($promiseOrValue);
+}
+
+function reject($promiseOrValue = null)
+{
+    if ($promiseOrValue instanceof PromiseInterface) {
+        return resolve($promiseOrValue)->then(function ($value) {
+            return new RejectedPromise($value);
+        });
+    }
+
+    return new RejectedPromise($promiseOrValue);
+}
+
+function all($promisesOrValues)
+{
+    return map($promisesOrValues, function ($val) {
+        return $val;
+    });
+}
+
+function race($promisesOrValues)
+{
+    $cancellationQueue = new CancellationQueue();
+    $cancellationQueue->enqueue($promisesOrValues);
+
+    return new Promise(function ($resolve, $reject, $notify) use ($promisesOrValues, $cancellationQueue) {
+        resolve($promisesOrValues)
+            ->done(function ($array) use ($cancellationQueue, $resolve, $reject, $notify) {
+                if (!is_array($array) || !$array) {
+                    $resolve();
+                    return;
+                }
+
+                foreach ($array as $promiseOrValue) {
+                    $cancellationQueue->enqueue($promiseOrValue);
+
+                    resolve($promiseOrValue)
+                        ->done($resolve, $reject, $notify);
+                }
+            }, $reject, $notify);
+    }, $cancellationQueue);
+}
+
+function any($promisesOrValues)
+{
+    return some($promisesOrValues, 1)
+        ->then(function ($val) {
+            return array_shift($val);
+        });
+}
+
+function some($promisesOrValues, $howMany)
+{
+    $cancellationQueue = new CancellationQueue();
+    $cancellationQueue->enqueue($promisesOrValues);
+
+    return new Promise(function ($resolve, $reject, $notify) use ($promisesOrValues, $howMany, $cancellationQueue) {
+        resolve($promisesOrValues)
+            ->done(function ($array) use ($howMany, $cancellationQueue, $resolve, $reject, $notify) {
+                if (!is_array($array) || $howMany < 1) {
+                    $resolve([]);
+                    return;
+                }
+
+                $len = count($array);
+
+                if ($len < $howMany) {
+                    throw new Exception\LengthException(
+                        sprintf(
+                            'Input array must contain at least %d item%s but contains only %s item%s.',
+                            $howMany,
+                            1 === $howMany ? '' : 's',
+                            $len,
+                            1 === $len ? '' : 's'
+                        )
+                    );
+                }
+
+                $toResolve = $howMany;
+                $toReject  = ($len - $toResolve) + 1;
+                $values    = [];
+                $reasons   = [];
+
+                foreach ($array as $i => $promiseOrValue) {
+                    $fulfiller = function ($val) use ($i, &$values, &$toResolve, $toReject, $resolve) {
+                        if ($toResolve < 1 || $toReject < 1) {
+                            return;
+                        }
+
+                        $values[$i] = $val;
+
+                        if (0 === --$toResolve) {
+                            $resolve($values);
+                        }
+                    };
+
+                    $rejecter = function ($reason) use ($i, &$reasons, &$toReject, $toResolve, $reject) {
+                        if ($toResolve < 1 || $toReject < 1) {
+                            return;
+                        }
+
+                        $reasons[$i] = $reason;
+
+                        if (0 === --$toReject) {
+                            $reject($reasons);
+                        }
+                    };
+
+                    $cancellationQueue->enqueue($promiseOrValue);
+
+                    resolve($promiseOrValue)
+                        ->done($fulfiller, $rejecter, $notify);
+                }
+            }, $reject, $notify);
+    }, $cancellationQueue);
+}
+
+function map($promisesOrValues, callable $mapFunc)
+{
+    $cancellationQueue = new CancellationQueue();
+    $cancellationQueue->enqueue($promisesOrValues);
+
+    return new Promise(function ($resolve, $reject, $notify) use ($promisesOrValues, $mapFunc, $cancellationQueue) {
+        resolve($promisesOrValues)
+            ->done(function ($array) use ($mapFunc, $cancellationQueue, $resolve, $reject, $notify) {
+                if (!is_array($array) || !$array) {
+                    $resolve([]);
+                    return;
+                }
+
+                $toResolve = count($array);
+                $values    = [];
+
+                foreach ($array as $i => $promiseOrValue) {
+                    $cancellationQueue->enqueue($promiseOrValue);
+                    $values[$i] = null;
+
+                    resolve($promiseOrValue)
+                        ->then($mapFunc)
+                        ->done(
+                            function ($mapped) use ($i, &$values, &$toResolve, $resolve) {
+                                $values[$i] = $mapped;
+
+                                if (0 === --$toResolve) {
+                                    $resolve($values);
+                                }
+                            },
+                            $reject,
+                            $notify
+                        );
+                }
+            }, $reject, $notify);
+    }, $cancellationQueue);
+}
+
+function reduce($promisesOrValues, callable $reduceFunc, $initialValue = null)
+{
+    $cancellationQueue = new CancellationQueue();
+    $cancellationQueue->enqueue($promisesOrValues);
+
+    return new Promise(function ($resolve, $reject, $notify) use ($promisesOrValues, $reduceFunc, $initialValue, $cancellationQueue) {
+        resolve($promisesOrValues)
+            ->done(function ($array) use ($reduceFunc, $initialValue, $cancellationQueue, $resolve, $reject, $notify) {
+                if (!is_array($array)) {
+                    $array = [];
+                }
+
+                $total = count($array);
+                $i = 0;
+
+                // Wrap the supplied $reduceFunc with one that handles promises and then
+                // delegates to the supplied.
+                $wrappedReduceFunc = function ($current, $val) use ($reduceFunc, $cancellationQueue, $total, &$i) {
+                    $cancellationQueue->enqueue($val);
+
+                    return $current
+                        ->then(function ($c) use ($reduceFunc, $total, &$i, $val) {
+                            return resolve($val)
+                                ->then(function ($value) use ($reduceFunc, $total, &$i, $c) {
+                                    return $reduceFunc($c, $value, $i++, $total);
+                                });
+                        });
+                };
+
+                $cancellationQueue->enqueue($initialValue);
+
+                array_reduce($array, $wrappedReduceFunc, resolve($initialValue))
+                    ->done($resolve, $reject, $notify);
+            }, $reject, $notify);
+    }, $cancellationQueue);
+}
+
+// Internal functions
+function _checkTypehint(callable $callback, $object)
+{
+    if (!is_object($object)) {
+        return true;
+    }
+
+    if (is_array($callback)) {
+        $callbackReflection = new \ReflectionMethod($callback[0], $callback[1]);
+    } elseif (is_object($callback) && !$callback instanceof \Closure) {
+        $callbackReflection = new \ReflectionMethod($callback, '__invoke');
+    } else {
+        $callbackReflection = new \ReflectionFunction($callback);
+    }
+
+    $parameters = $callbackReflection->getParameters();
+
+    if (!isset($parameters[0])) {
+        return true;
+    }
+
+    $expectedException = $parameters[0];
+
+    if (!$expectedException->getClass()) {
+        return true;
+    }
+
+    return $expectedException->getClass()->isInstance($object);
+}
diff --git a/assets/php/vendor/react/promise/src/functions_include.php b/assets/php/vendor/react/promise/src/functions_include.php
new file mode 100644
index 0000000..c71decb
--- /dev/null
+++ b/assets/php/vendor/react/promise/src/functions_include.php
@@ -0,0 +1,5 @@
+<?php
+
+if (!function_exists('React\Promise\resolve')) {
+    require __DIR__.'/functions.php';
+}
diff --git a/assets/php/vendor/react/promise/tests/CancellationQueueTest.php b/assets/php/vendor/react/promise/tests/CancellationQueueTest.php
new file mode 100644
index 0000000..32cedf4
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/CancellationQueueTest.php
@@ -0,0 +1,100 @@
+<?php
+
+namespace React\Promise;
+
+class CancellationQueueTest extends TestCase
+{
+    /** @test */
+    public function acceptsSimpleCancellableThenable()
+    {
+        $p = new SimpleTestCancellableThenable();
+
+        $cancellationQueue = new CancellationQueue();
+        $cancellationQueue->enqueue($p);
+
+        $cancellationQueue();
+
+        $this->assertTrue($p->cancelCalled);
+    }
+
+    /** @test */
+    public function ignoresSimpleCancellable()
+    {
+        $p = new SimpleTestCancellable();
+
+        $cancellationQueue = new CancellationQueue();
+        $cancellationQueue->enqueue($p);
+
+        $cancellationQueue();
+
+        $this->assertFalse($p->cancelCalled);
+    }
+
+    /** @test */
+    public function callsCancelOnPromisesEnqueuedBeforeStart()
+    {
+        $d1 = $this->getCancellableDeferred();
+        $d2 = $this->getCancellableDeferred();
+
+        $cancellationQueue = new CancellationQueue();
+        $cancellationQueue->enqueue($d1->promise());
+        $cancellationQueue->enqueue($d2->promise());
+
+        $cancellationQueue();
+    }
+
+    /** @test */
+    public function callsCancelOnPromisesEnqueuedAfterStart()
+    {
+        $d1 = $this->getCancellableDeferred();
+        $d2 = $this->getCancellableDeferred();
+
+        $cancellationQueue = new CancellationQueue();
+
+        $cancellationQueue();
+
+        $cancellationQueue->enqueue($d2->promise());
+        $cancellationQueue->enqueue($d1->promise());
+    }
+
+    /** @test */
+    public function doesNotCallCancelTwiceWhenStartedTwice()
+    {
+        $d = $this->getCancellableDeferred();
+
+        $cancellationQueue = new CancellationQueue();
+        $cancellationQueue->enqueue($d->promise());
+
+        $cancellationQueue();
+        $cancellationQueue();
+    }
+
+    /** @test */
+    public function rethrowsExceptionsThrownFromCancel()
+    {
+        $this->setExpectedException('\Exception', 'test');
+
+        $mock = $this
+            ->getMockBuilder('React\Promise\CancellablePromiseInterface')
+            ->getMock();
+        $mock
+            ->expects($this->once())
+            ->method('cancel')
+            ->will($this->throwException(new \Exception('test')));
+
+        $cancellationQueue = new CancellationQueue();
+        $cancellationQueue->enqueue($mock);
+
+        $cancellationQueue();
+    }
+
+    private function getCancellableDeferred()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke');
+
+        return new Deferred($mock);
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/DeferredTest.php b/assets/php/vendor/react/promise/tests/DeferredTest.php
new file mode 100644
index 0000000..16212e9
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/DeferredTest.php
@@ -0,0 +1,42 @@
+<?php
+
+namespace React\Promise;
+
+use React\Promise\PromiseAdapter\CallbackPromiseAdapter;
+
+class DeferredTest extends TestCase
+{
+    use PromiseTest\FullTestTrait;
+
+    public function getPromiseTestAdapter(callable $canceller = null)
+    {
+        $d = new Deferred($canceller);
+
+        return new CallbackPromiseAdapter([
+            'promise' => [$d, 'promise'],
+            'resolve' => [$d, 'resolve'],
+            'reject'  => [$d, 'reject'],
+            'notify'  => [$d, 'progress'],
+            'settle'  => [$d, 'resolve'],
+        ]);
+    }
+
+    /** @test */
+    public function progressIsAnAliasForNotify()
+    {
+        $deferred = new Deferred();
+
+        $sentinel = new \stdClass();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($sentinel);
+
+        $deferred->promise()
+            ->then($this->expectCallableNever(), $this->expectCallableNever(), $mock);
+
+        $deferred->progress($sentinel);
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/FulfilledPromiseTest.php b/assets/php/vendor/react/promise/tests/FulfilledPromiseTest.php
new file mode 100644
index 0000000..97fc8f6
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/FulfilledPromiseTest.php
@@ -0,0 +1,50 @@
+<?php
+
+namespace React\Promise;
+
+use React\Promise\PromiseAdapter\CallbackPromiseAdapter;
+
+class FulfilledPromiseTest extends TestCase
+{
+    use PromiseTest\PromiseSettledTestTrait,
+        PromiseTest\PromiseFulfilledTestTrait;
+
+    public function getPromiseTestAdapter(callable $canceller = null)
+    {
+        $promise = null;
+
+        return new CallbackPromiseAdapter([
+            'promise' => function () use (&$promise) {
+                if (!$promise) {
+                    throw new \LogicException('FulfilledPromise must be resolved before obtaining the promise');
+                }
+
+                return $promise;
+            },
+            'resolve' => function ($value = null) use (&$promise) {
+                if (!$promise) {
+                    $promise = new FulfilledPromise($value);
+                }
+            },
+            'reject' => function () {
+                throw new \LogicException('You cannot call reject() for React\Promise\FulfilledPromise');
+            },
+            'notify' => function () {
+                // no-op
+            },
+            'settle' => function ($value = null) use (&$promise) {
+                if (!$promise) {
+                    $promise = new FulfilledPromise($value);
+                }
+            },
+        ]);
+    }
+
+    /** @test */
+    public function shouldThrowExceptionIfConstructedWithAPromise()
+    {
+        $this->setExpectedException('\InvalidArgumentException');
+
+        return new FulfilledPromise(new FulfilledPromise());
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/FunctionAllTest.php b/assets/php/vendor/react/promise/tests/FunctionAllTest.php
new file mode 100644
index 0000000..74c1d7c
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/FunctionAllTest.php
@@ -0,0 +1,114 @@
+<?php
+
+namespace React\Promise;
+
+class FunctionAllTest extends TestCase
+{
+    /** @test */
+    public function shouldResolveEmptyInput()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([]));
+
+        all([])
+            ->then($mock);
+    }
+
+    /** @test */
+    public function shouldResolveValuesArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([1, 2, 3]));
+
+        all([1, 2, 3])
+            ->then($mock);
+    }
+
+    /** @test */
+    public function shouldResolvePromisesArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([1, 2, 3]));
+
+        all([resolve(1), resolve(2), resolve(3)])
+            ->then($mock);
+    }
+
+    /** @test */
+    public function shouldResolveSparseArrayInput()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([null, 1, null, 1, 1]));
+
+        all([null, 1, null, 1, 1])
+            ->then($mock);
+    }
+
+    /** @test */
+    public function shouldRejectIfAnyInputPromiseRejects()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(2));
+
+        all([resolve(1), reject(2), resolve(3)])
+            ->then($this->expectCallableNever(), $mock);
+    }
+
+    /** @test */
+    public function shouldAcceptAPromiseForAnArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([1, 2, 3]));
+
+        all(resolve([1, 2, 3]))
+            ->then($mock);
+    }
+
+    /** @test */
+    public function shouldResolveToEmptyArrayWhenInputPromiseDoesNotResolveToArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([]));
+
+        all(resolve(1))
+            ->then($mock);
+    }
+
+    /** @test */
+    public function shouldPreserveTheOrderOfArrayWhenResolvingAsyncPromises()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([1, 2, 3]));
+
+        $deferred = new Deferred();
+
+        all([resolve(1), $deferred->promise(), resolve(3)])
+            ->then($mock);
+
+        $deferred->resolve(2);
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/FunctionAnyTest.php b/assets/php/vendor/react/promise/tests/FunctionAnyTest.php
new file mode 100644
index 0000000..140b551
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/FunctionAnyTest.php
@@ -0,0 +1,204 @@
+<?php
+
+namespace React\Promise;
+
+use React\Promise\Exception\LengthException;
+
+class FunctionAnyTest extends TestCase
+{
+    /** @test */
+    public function shouldRejectWithLengthExceptionWithEmptyInputArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with(
+                $this->callback(function($exception){
+                    return $exception instanceof LengthException &&
+                           'Input array must contain at least 1 item but contains only 0 items.' === $exception->getMessage();
+                })
+            );
+
+        any([])
+            ->then($this->expectCallableNever(), $mock);
+    }
+
+    /** @test */
+    public function shouldResolveToNullWithNonArrayInput()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(null));
+
+        any(null)
+            ->then($mock);
+    }
+
+    /** @test */
+    public function shouldResolveWithAnInputValue()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        any([1, 2, 3])
+            ->then($mock);
+    }
+
+    /** @test */
+    public function shouldResolveWithAPromisedInputValue()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        any([resolve(1), resolve(2), resolve(3)])
+            ->then($mock);
+    }
+
+    /** @test */
+    public function shouldRejectWithAllRejectedInputValuesIfAllInputsAreRejected()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([0 => 1, 1 => 2, 2 => 3]));
+
+        any([reject(1), reject(2), reject(3)])
+            ->then($this->expectCallableNever(), $mock);
+    }
+
+    /** @test */
+    public function shouldResolveWhenFirstInputPromiseResolves()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        any([resolve(1), reject(2), reject(3)])
+            ->then($mock);
+    }
+
+    /** @test */
+    public function shouldAcceptAPromiseForAnArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        any(resolve([1, 2, 3]))
+            ->then($mock);
+    }
+
+    /** @test */
+    public function shouldResolveToNullArrayWhenInputPromiseDoesNotResolveToArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(null));
+
+        any(resolve(1))
+            ->then($mock);
+    }
+
+    /** @test */
+    public function shouldNotRelyOnArryIndexesWhenUnwrappingToASingleResolutionValue()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(2));
+
+        $d1 = new Deferred();
+        $d2 = new Deferred();
+
+        any(['abc' => $d1->promise(), 1 => $d2->promise()])
+            ->then($mock);
+
+        $d2->resolve(2);
+        $d1->resolve(1);
+    }
+
+    /** @test */
+    public function shouldRejectWhenInputPromiseRejects()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(null));
+
+        any(reject())
+            ->then($this->expectCallableNever(), $mock);
+    }
+
+    /** @test */
+    public function shouldCancelInputPromise()
+    {
+        $mock = $this
+            ->getMockBuilder('React\Promise\CancellablePromiseInterface')
+            ->getMock();
+        $mock
+            ->expects($this->once())
+            ->method('cancel');
+
+        any($mock)->cancel();
+    }
+
+    /** @test */
+    public function shouldCancelInputArrayPromises()
+    {
+        $mock1 = $this
+            ->getMockBuilder('React\Promise\CancellablePromiseInterface')
+            ->getMock();
+        $mock1
+            ->expects($this->once())
+            ->method('cancel');
+
+        $mock2 = $this
+            ->getMockBuilder('React\Promise\CancellablePromiseInterface')
+            ->getMock();
+        $mock2
+            ->expects($this->once())
+            ->method('cancel');
+
+        any([$mock1, $mock2])->cancel();
+    }
+
+    /** @test */
+    public function shouldNotCancelOtherPendingInputArrayPromisesIfOnePromiseFulfills()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->never())
+            ->method('__invoke');
+
+
+        $deferred = New Deferred($mock);
+        $deferred->resolve();
+
+        $mock2 = $this
+            ->getMockBuilder('React\Promise\CancellablePromiseInterface')
+            ->getMock();
+        $mock2
+            ->expects($this->never())
+            ->method('cancel');
+
+        some([$deferred->promise(), $mock2], 1)->cancel();
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/FunctionCheckTypehintTest.php b/assets/php/vendor/react/promise/tests/FunctionCheckTypehintTest.php
new file mode 100644
index 0000000..8449bc1
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/FunctionCheckTypehintTest.php
@@ -0,0 +1,118 @@
+<?php
+
+namespace React\Promise;
+
+class FunctionCheckTypehintTest extends TestCase
+{
+    /** @test */
+    public function shouldAcceptClosureCallbackWithTypehint()
+    {
+        $this->assertTrue(_checkTypehint(function (\InvalidArgumentException $e) {
+                }, new \InvalidArgumentException()));
+        $this->assertfalse(_checkTypehint(function (\InvalidArgumentException $e) {
+                }, new \Exception()));
+    }
+
+    /** @test */
+    public function shouldAcceptFunctionStringCallbackWithTypehint()
+    {
+        $this->assertTrue(_checkTypehint('React\Promise\testCallbackWithTypehint', new \InvalidArgumentException()));
+        $this->assertfalse(_checkTypehint('React\Promise\testCallbackWithTypehint', new \Exception()));
+    }
+
+    /** @test */
+    public function shouldAcceptInvokableObjectCallbackWithTypehint()
+    {
+        $this->assertTrue(_checkTypehint(new TestCallbackWithTypehintClass(), new \InvalidArgumentException()));
+        $this->assertfalse(_checkTypehint(new TestCallbackWithTypehintClass(), new \Exception()));
+    }
+
+    /** @test */
+    public function shouldAcceptObjectMethodCallbackWithTypehint()
+    {
+        $this->assertTrue(_checkTypehint([new TestCallbackWithTypehintClass(), 'testCallback'], new \InvalidArgumentException()));
+        $this->assertfalse(_checkTypehint([new TestCallbackWithTypehintClass(), 'testCallback'], new \Exception()));
+    }
+
+    /** @test */
+    public function shouldAcceptStaticClassCallbackWithTypehint()
+    {
+        $this->assertTrue(_checkTypehint(['React\Promise\TestCallbackWithTypehintClass', 'testCallbackStatic'], new \InvalidArgumentException()));
+        $this->assertfalse(_checkTypehint(['React\Promise\TestCallbackWithTypehintClass', 'testCallbackStatic'], new \Exception()));
+    }
+
+    /** @test */
+    public function shouldAcceptClosureCallbackWithoutTypehint()
+    {
+        $this->assertTrue(_checkTypehint(function (\InvalidArgumentException $e) {
+        }, new \InvalidArgumentException()));
+    }
+
+    /** @test */
+    public function shouldAcceptFunctionStringCallbackWithoutTypehint()
+    {
+        $this->assertTrue(_checkTypehint('React\Promise\testCallbackWithoutTypehint', new \InvalidArgumentException()));
+    }
+
+    /** @test */
+    public function shouldAcceptInvokableObjectCallbackWithoutTypehint()
+    {
+        $this->assertTrue(_checkTypehint(new TestCallbackWithoutTypehintClass(), new \InvalidArgumentException()));
+    }
+
+    /** @test */
+    public function shouldAcceptObjectMethodCallbackWithoutTypehint()
+    {
+        $this->assertTrue(_checkTypehint([new TestCallbackWithoutTypehintClass(), 'testCallback'], new \InvalidArgumentException()));
+    }
+
+    /** @test */
+    public function shouldAcceptStaticClassCallbackWithoutTypehint()
+    {
+        $this->assertTrue(_checkTypehint(['React\Promise\TestCallbackWithoutTypehintClass', 'testCallbackStatic'], new \InvalidArgumentException()));
+    }
+}
+
+function testCallbackWithTypehint(\InvalidArgumentException $e)
+{
+}
+
+function testCallbackWithoutTypehint()
+{
+}
+
+class TestCallbackWithTypehintClass
+{
+    public function __invoke(\InvalidArgumentException $e)
+    {
+
+    }
+
+    public function testCallback(\InvalidArgumentException $e)
+    {
+
+    }
+
+    public static function testCallbackStatic(\InvalidArgumentException $e)
+    {
+
+    }
+}
+
+class TestCallbackWithoutTypehintClass
+{
+    public function __invoke()
+    {
+
+    }
+
+    public function testCallback()
+    {
+
+    }
+
+    public static function testCallbackStatic()
+    {
+
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/FunctionMapTest.php b/assets/php/vendor/react/promise/tests/FunctionMapTest.php
new file mode 100644
index 0000000..1ea560a
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/FunctionMapTest.php
@@ -0,0 +1,198 @@
+<?php
+
+namespace React\Promise;
+
+class FunctionMapTest extends TestCase
+{
+    protected function mapper()
+    {
+        return function ($val) {
+            return $val * 2;
+        };
+    }
+
+    protected function promiseMapper()
+    {
+        return function ($val) {
+            return resolve($val * 2);
+        };
+    }
+
+    /** @test */
+    public function shouldMapInputValuesArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([2, 4, 6]));
+
+        map(
+            [1, 2, 3],
+            $this->mapper()
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldMapInputPromisesArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([2, 4, 6]));
+
+        map(
+            [resolve(1), resolve(2), resolve(3)],
+            $this->mapper()
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldMapMixedInputArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([2, 4, 6]));
+
+        map(
+            [1, resolve(2), 3],
+            $this->mapper()
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldMapInputWhenMapperReturnsAPromise()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([2, 4, 6]));
+
+        map(
+            [1, 2, 3],
+            $this->promiseMapper()
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldAcceptAPromiseForAnArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([2, 4, 6]));
+
+        map(
+            resolve([1, resolve(2), 3]),
+            $this->mapper()
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldResolveToEmptyArrayWhenInputPromiseDoesNotResolveToArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([]));
+
+        map(
+            resolve(1),
+            $this->mapper()
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldPreserveTheOrderOfArrayWhenResolvingAsyncPromises()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([2, 4, 6]));
+
+        $deferred = new Deferred();
+
+        map(
+            [resolve(1), $deferred->promise(), resolve(3)],
+            $this->mapper()
+        )->then($mock);
+
+        $deferred->resolve(2);
+    }
+
+    /** @test */
+    public function shouldRejectWhenInputContainsRejection()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(2));
+
+        map(
+            [resolve(1), reject(2), resolve(3)],
+            $this->mapper()
+        )->then($this->expectCallableNever(), $mock);
+    }
+
+    /** @test */
+    public function shouldRejectWhenInputPromiseRejects()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(null));
+
+        map(
+            reject(),
+            $this->mapper()
+        )->then($this->expectCallableNever(), $mock);
+    }
+
+    /** @test */
+    public function shouldCancelInputPromise()
+    {
+        $mock = $this
+            ->getMockBuilder('React\Promise\CancellablePromiseInterface')
+            ->getMock();
+        $mock
+            ->expects($this->once())
+            ->method('cancel');
+
+        map(
+            $mock,
+            $this->mapper()
+        )->cancel();
+    }
+
+    /** @test */
+    public function shouldCancelInputArrayPromises()
+    {
+        $mock1 = $this
+            ->getMockBuilder('React\Promise\CancellablePromiseInterface')
+            ->getMock();
+        $mock1
+            ->expects($this->once())
+            ->method('cancel');
+
+        $mock2 = $this
+            ->getMockBuilder('React\Promise\CancellablePromiseInterface')
+            ->getMock();
+        $mock2
+            ->expects($this->once())
+            ->method('cancel');
+
+        map(
+            [$mock1, $mock2],
+            $this->mapper()
+        )->cancel();
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/FunctionRaceTest.php b/assets/php/vendor/react/promise/tests/FunctionRaceTest.php
new file mode 100644
index 0000000..83770ec
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/FunctionRaceTest.php
@@ -0,0 +1,211 @@
+<?php
+
+namespace React\Promise;
+
+class FunctionRaceTest extends TestCase
+{
+    /** @test */
+    public function shouldResolveEmptyInput()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(null));
+
+        race(
+            []
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldResolveValuesArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        race(
+            [1, 2, 3]
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldResolvePromisesArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(2));
+
+        $d1 = new Deferred();
+        $d2 = new Deferred();
+        $d3 = new Deferred();
+
+        race(
+            [$d1->promise(), $d2->promise(), $d3->promise()]
+        )->then($mock);
+
+        $d2->resolve(2);
+
+        $d1->resolve(1);
+        $d3->resolve(3);
+    }
+
+    /** @test */
+    public function shouldResolveSparseArrayInput()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(null));
+
+        race(
+            [null, 1, null, 2, 3]
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldRejectIfFirstSettledPromiseRejects()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(2));
+
+        $d1 = new Deferred();
+        $d2 = new Deferred();
+        $d3 = new Deferred();
+
+        race(
+            [$d1->promise(), $d2->promise(), $d3->promise()]
+        )->then($this->expectCallableNever(), $mock);
+
+        $d2->reject(2);
+
+        $d1->resolve(1);
+        $d3->resolve(3);
+    }
+
+    /** @test */
+    public function shouldAcceptAPromiseForAnArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        race(
+            resolve([1, 2, 3])
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldResolveToNullWhenInputPromiseDoesNotResolveToArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(null));
+
+        race(
+            resolve(1)
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldRejectWhenInputPromiseRejects()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(null));
+
+        race(
+            reject()
+        )->then($this->expectCallableNever(), $mock);
+    }
+
+    /** @test */
+    public function shouldCancelInputPromise()
+    {
+        $mock = $this
+            ->getMockBuilder('React\Promise\CancellablePromiseInterface')
+            ->getMock();
+        $mock
+            ->expects($this->once())
+            ->method('cancel');
+
+        race($mock)->cancel();
+    }
+
+    /** @test */
+    public function shouldCancelInputArrayPromises()
+    {
+        $mock1 = $this
+            ->getMockBuilder('React\Promise\CancellablePromiseInterface')
+            ->getMock();
+        $mock1
+            ->expects($this->once())
+            ->method('cancel');
+
+        $mock2 = $this
+            ->getMockBuilder('React\Promise\CancellablePromiseInterface')
+            ->getMock();
+        $mock2
+            ->expects($this->once())
+            ->method('cancel');
+
+        race([$mock1, $mock2])->cancel();
+    }
+
+    /** @test */
+    public function shouldNotCancelOtherPendingInputArrayPromisesIfOnePromiseFulfills()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->never())
+            ->method('__invoke');
+
+        $deferred = New Deferred($mock);
+        $deferred->resolve();
+
+        $mock2 = $this
+            ->getMockBuilder('React\Promise\CancellablePromiseInterface')
+            ->getMock();
+        $mock2
+            ->expects($this->never())
+            ->method('cancel');
+
+        race([$deferred->promise(), $mock2])->cancel();
+    }
+
+    /** @test */
+    public function shouldNotCancelOtherPendingInputArrayPromisesIfOnePromiseRejects()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->never())
+            ->method('__invoke');
+
+        $deferred = New Deferred($mock);
+        $deferred->reject();
+
+        $mock2 = $this
+            ->getMockBuilder('React\Promise\CancellablePromiseInterface')
+            ->getMock();
+        $mock2
+            ->expects($this->never())
+            ->method('cancel');
+
+        race([$deferred->promise(), $mock2])->cancel();
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/FunctionReduceTest.php b/assets/php/vendor/react/promise/tests/FunctionReduceTest.php
new file mode 100644
index 0000000..8b43a87
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/FunctionReduceTest.php
@@ -0,0 +1,347 @@
+<?php
+
+namespace React\Promise;
+
+class FunctionReduceTest extends TestCase
+{
+    protected function plus()
+    {
+        return function ($sum, $val) {
+            return $sum + $val;
+        };
+    }
+
+    protected function append()
+    {
+        return function ($sum, $val) {
+            return $sum . $val;
+        };
+    }
+
+    /** @test */
+    public function shouldReduceValuesWithoutInitialValue()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(6));
+
+        reduce(
+            [1, 2, 3],
+            $this->plus()
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldReduceValuesWithInitialValue()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(7));
+
+        reduce(
+            [1, 2, 3],
+            $this->plus(),
+            1
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldReduceValuesWithInitialPromise()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(7));
+
+        reduce(
+            [1, 2, 3],
+            $this->plus(),
+            resolve(1)
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldReducePromisedValuesWithoutInitialValue()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(6));
+
+        reduce(
+            [resolve(1), resolve(2), resolve(3)],
+            $this->plus()
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldReducePromisedValuesWithInitialValue()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(7));
+
+        reduce(
+            [resolve(1), resolve(2), resolve(3)],
+            $this->plus(),
+            1
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldReducePromisedValuesWithInitialPromise()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(7));
+
+        reduce(
+            [resolve(1), resolve(2), resolve(3)],
+            $this->plus(),
+            resolve(1)
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldReduceEmptyInputWithInitialValue()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        reduce(
+            [],
+            $this->plus(),
+            1
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldReduceEmptyInputWithInitialPromise()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        reduce(
+            [],
+            $this->plus(),
+            resolve(1)
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldRejectWhenInputContainsRejection()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(2));
+
+        reduce(
+            [resolve(1), reject(2), resolve(3)],
+            $this->plus(),
+            resolve(1)
+        )->then($this->expectCallableNever(), $mock);
+    }
+
+    /** @test */
+    public function shouldResolveWithNullWhenInputIsEmptyAndNoInitialValueOrPromiseProvided()
+    {
+        // Note: this is different from when.js's behavior!
+        // In when.reduce(), this rejects with a TypeError exception (following
+        // JavaScript's [].reduce behavior.
+        // We're following PHP's array_reduce behavior and resolve with NULL.
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(null));
+
+        reduce(
+            [],
+            $this->plus()
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldAllowSparseArrayInputWithoutInitialValue()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(3));
+
+        reduce(
+            [null, null, 1, null, 1, 1],
+            $this->plus()
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldAllowSparseArrayInputWithInitialValue()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(4));
+
+        reduce(
+            [null, null, 1, null, 1, 1],
+            $this->plus(),
+            1
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldReduceInInputOrder()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo('123'));
+
+        reduce(
+            [1, 2, 3],
+            $this->append(),
+            ''
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldAcceptAPromiseForAnArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo('123'));
+
+        reduce(
+            resolve([1, 2, 3]),
+            $this->append(),
+            ''
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldResolveToInitialValueWhenInputPromiseDoesNotResolveToAnArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        reduce(
+            resolve(1),
+            $this->plus(),
+            1
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldProvideCorrectBasisValue()
+    {
+        $insertIntoArray = function ($arr, $val, $i) {
+            $arr[$i] = $val;
+
+            return $arr;
+        };
+
+        $d1 = new Deferred();
+        $d2 = new Deferred();
+        $d3 = new Deferred();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([1, 2, 3]));
+
+        reduce(
+            [$d1->promise(), $d2->promise(), $d3->promise()],
+            $insertIntoArray,
+            []
+        )->then($mock);
+
+        $d3->resolve(3);
+        $d1->resolve(1);
+        $d2->resolve(2);
+    }
+
+    /** @test */
+    public function shouldRejectWhenInputPromiseRejects()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(null));
+
+        reduce(
+            reject(),
+            $this->plus(),
+            1
+        )->then($this->expectCallableNever(), $mock);
+    }
+
+    /** @test */
+    public function shouldCancelInputPromise()
+    {
+        $mock = $this
+            ->getMockBuilder('React\Promise\CancellablePromiseInterface')
+            ->getMock();
+        $mock
+            ->expects($this->once())
+            ->method('cancel');
+
+        reduce(
+            $mock,
+            $this->plus(),
+            1
+        )->cancel();
+    }
+
+    /** @test */
+    public function shouldCancelInputArrayPromises()
+    {
+        $mock1 = $this
+            ->getMockBuilder('React\Promise\CancellablePromiseInterface')
+            ->getMock();
+        $mock1
+            ->expects($this->once())
+            ->method('cancel');
+
+        $mock2 = $this
+            ->getMockBuilder('React\Promise\CancellablePromiseInterface')
+            ->getMock();
+        $mock2
+            ->expects($this->once())
+            ->method('cancel');
+
+        reduce(
+            [$mock1, $mock2],
+            $this->plus(),
+            1
+        )->cancel();
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/FunctionRejectTest.php b/assets/php/vendor/react/promise/tests/FunctionRejectTest.php
new file mode 100644
index 0000000..84b8ec6
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/FunctionRejectTest.php
@@ -0,0 +1,64 @@
+<?php
+
+namespace React\Promise;
+
+class FunctionRejectTest extends TestCase
+{
+    /** @test */
+    public function shouldRejectAnImmediateValue()
+    {
+        $expected = 123;
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($expected));
+
+        reject($expected)
+            ->then(
+                $this->expectCallableNever(),
+                $mock
+            );
+    }
+
+    /** @test */
+    public function shouldRejectAFulfilledPromise()
+    {
+        $expected = 123;
+
+        $resolved = new FulfilledPromise($expected);
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($expected));
+
+        reject($resolved)
+            ->then(
+                $this->expectCallableNever(),
+                $mock
+            );
+    }
+
+    /** @test */
+    public function shouldRejectARejectedPromise()
+    {
+        $expected = 123;
+
+        $resolved = new RejectedPromise($expected);
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($expected));
+
+        reject($resolved)
+            ->then(
+                $this->expectCallableNever(),
+                $mock
+            );
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/FunctionResolveTest.php b/assets/php/vendor/react/promise/tests/FunctionResolveTest.php
new file mode 100644
index 0000000..53126bc
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/FunctionResolveTest.php
@@ -0,0 +1,171 @@
+<?php
+
+namespace React\Promise;
+
+class FunctionResolveTest extends TestCase
+{
+    /** @test */
+    public function shouldResolveAnImmediateValue()
+    {
+        $expected = 123;
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($expected));
+
+        resolve($expected)
+            ->then(
+                $mock,
+                $this->expectCallableNever()
+            );
+    }
+
+    /** @test */
+    public function shouldResolveAFulfilledPromise()
+    {
+        $expected = 123;
+
+        $resolved = new FulfilledPromise($expected);
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($expected));
+
+        resolve($resolved)
+            ->then(
+                $mock,
+                $this->expectCallableNever()
+            );
+    }
+
+    /** @test */
+    public function shouldResolveAThenable()
+    {
+        $thenable = new SimpleFulfilledTestThenable();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo('foo'));
+
+        resolve($thenable)
+            ->then(
+                $mock,
+                $this->expectCallableNever()
+            );
+    }
+
+    /** @test */
+    public function shouldResolveACancellableThenable()
+    {
+        $thenable = new SimpleTestCancellableThenable();
+
+        $promise = resolve($thenable);
+        $promise->cancel();
+
+        $this->assertTrue($thenable->cancelCalled);
+    }
+
+    /** @test */
+    public function shouldRejectARejectedPromise()
+    {
+        $expected = 123;
+
+        $resolved = new RejectedPromise($expected);
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($expected));
+
+        resolve($resolved)
+            ->then(
+                $this->expectCallableNever(),
+                $mock
+            );
+    }
+
+    /** @test */
+    public function shouldSupportDeepNestingInPromiseChains()
+    {
+        $d = new Deferred();
+        $d->resolve(false);
+
+        $result = resolve(resolve($d->promise()->then(function ($val) {
+            $d = new Deferred();
+            $d->resolve($val);
+
+            $identity = function ($val) {
+                return $val;
+            };
+
+            return resolve($d->promise()->then($identity))->then(
+                function ($val) {
+                    return !$val;
+                }
+            );
+        })));
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(true));
+
+        $result->then($mock);
+    }
+
+    /** @test */
+    public function shouldSupportVeryDeepNestedPromises()
+    {
+        $deferreds = [];
+
+        // @TODO Increase count once global-queue is merged
+        for ($i = 0; $i < 10; $i++) {
+            $deferreds[] = $d = new Deferred();
+            $p = $d->promise();
+
+            $last = $p;
+            for ($j = 0; $j < 10; $j++) {
+                $last = $last->then(function($result) {
+                    return $result;
+                });
+            }
+        }
+
+        $p = null;
+        foreach ($deferreds as $d) {
+            if ($p) {
+                $d->resolve($p);
+            }
+
+            $p = $d->promise();
+        }
+
+        $deferreds[0]->resolve(true);
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(true));
+
+        $deferreds[0]->promise()->then($mock);
+    }
+
+    /** @test */
+    public function returnsExtendePromiseForSimplePromise()
+    {
+        $promise = $this
+            ->getMockBuilder('React\Promise\PromiseInterface')
+            ->getMock();
+
+        $this->assertInstanceOf('React\Promise\ExtendedPromiseInterface', resolve($promise));
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/FunctionSomeTest.php b/assets/php/vendor/react/promise/tests/FunctionSomeTest.php
new file mode 100644
index 0000000..276b54b
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/FunctionSomeTest.php
@@ -0,0 +1,258 @@
+<?php
+
+namespace React\Promise;
+
+use React\Promise\Exception\LengthException;
+
+class FunctionSomeTest extends TestCase
+{
+    /** @test */
+    public function shouldRejectWithLengthExceptionWithEmptyInputArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with(
+                $this->callback(function($exception){
+                    return $exception instanceof LengthException &&
+                           'Input array must contain at least 1 item but contains only 0 items.' === $exception->getMessage();
+                })
+            );
+
+        some(
+            [],
+            1
+        )->then($this->expectCallableNever(), $mock);
+    }
+
+    /** @test */
+    public function shouldRejectWithLengthExceptionWithInputArrayContainingNotEnoughItems()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with(
+                $this->callback(function($exception){
+                    return $exception instanceof LengthException &&
+                           'Input array must contain at least 4 items but contains only 3 items.' === $exception->getMessage();
+                })
+            );
+
+        some(
+            [1, 2, 3],
+            4
+        )->then($this->expectCallableNever(), $mock);
+    }
+
+    /** @test */
+    public function shouldResolveToEmptyArrayWithNonArrayInput()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([]));
+
+        some(
+            null,
+            1
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldResolveValuesArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([1, 2]));
+
+        some(
+            [1, 2, 3],
+            2
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldResolvePromisesArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([1, 2]));
+
+        some(
+            [resolve(1), resolve(2), resolve(3)],
+            2
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldResolveSparseArrayInput()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([null, 1]));
+
+        some(
+            [null, 1, null, 2, 3],
+            2
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldRejectIfAnyInputPromiseRejectsBeforeDesiredNumberOfInputsAreResolved()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([1 => 2, 2 => 3]));
+
+        some(
+            [resolve(1), reject(2), reject(3)],
+            2
+        )->then($this->expectCallableNever(), $mock);
+    }
+
+    /** @test */
+    public function shouldAcceptAPromiseForAnArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([1, 2]));
+
+        some(
+            resolve([1, 2, 3]),
+            2
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldResolveWithEmptyArrayIfHowManyIsLessThanOne()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([]));
+
+        some(
+            [1],
+            0
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldResolveToEmptyArrayWhenInputPromiseDoesNotResolveToArray()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo([]));
+
+        some(
+            resolve(1),
+            1
+        )->then($mock);
+    }
+
+    /** @test */
+    public function shouldRejectWhenInputPromiseRejects()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(null));
+
+        some(
+            reject(),
+            1
+        )->then($this->expectCallableNever(), $mock);
+    }
+
+    /** @test */
+    public function shouldCancelInputPromise()
+    {
+        $mock = $this
+            ->getMockBuilder('React\Promise\CancellablePromiseInterface')
+            ->getMock();
+        $mock
+            ->expects($this->once())
+            ->method('cancel');
+
+        some($mock, 1)->cancel();
+    }
+
+    /** @test */
+    public function shouldCancelInputArrayPromises()
+    {
+        $mock1 = $this
+            ->getMockBuilder('React\Promise\CancellablePromiseInterface')
+            ->getMock();
+        $mock1
+            ->expects($this->once())
+            ->method('cancel');
+
+        $mock2 = $this
+            ->getMockBuilder('React\Promise\CancellablePromiseInterface')
+            ->getMock();
+        $mock2
+            ->expects($this->once())
+            ->method('cancel');
+
+        some([$mock1, $mock2], 1)->cancel();
+    }
+
+    /** @test */
+    public function shouldNotCancelOtherPendingInputArrayPromisesIfEnoughPromisesFulfill()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->never())
+            ->method('__invoke');
+
+        $deferred = New Deferred($mock);
+        $deferred->resolve();
+
+        $mock2 = $this
+            ->getMockBuilder('React\Promise\CancellablePromiseInterface')
+            ->getMock();
+        $mock2
+            ->expects($this->never())
+            ->method('cancel');
+
+        some([$deferred->promise(), $mock2], 1);
+    }
+
+    /** @test */
+    public function shouldNotCancelOtherPendingInputArrayPromisesIfEnoughPromisesReject()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->never())
+            ->method('__invoke');
+
+        $deferred = New Deferred($mock);
+        $deferred->reject();
+
+        $mock2 = $this
+            ->getMockBuilder('React\Promise\CancellablePromiseInterface')
+            ->getMock();
+        $mock2
+            ->expects($this->never())
+            ->method('cancel');
+
+        some([$deferred->promise(), $mock2], 2);
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/LazyPromiseTest.php b/assets/php/vendor/react/promise/tests/LazyPromiseTest.php
new file mode 100644
index 0000000..b630881
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/LazyPromiseTest.php
@@ -0,0 +1,107 @@
+<?php
+
+namespace React\Promise;
+
+use React\Promise\PromiseAdapter\CallbackPromiseAdapter;
+
+class LazyPromiseTest extends TestCase
+{
+    use PromiseTest\FullTestTrait;
+
+    public function getPromiseTestAdapter(callable $canceller = null)
+    {
+        $d = new Deferred($canceller);
+
+        $factory = function () use ($d) {
+            return $d->promise();
+        };
+
+        return new CallbackPromiseAdapter([
+            'promise'  => function () use ($factory) {
+                return new LazyPromise($factory);
+            },
+            'resolve' => [$d, 'resolve'],
+            'reject'  => [$d, 'reject'],
+            'notify'  => [$d, 'progress'],
+            'settle'  => [$d, 'resolve'],
+        ]);
+    }
+
+    /** @test */
+    public function shouldNotCallFactoryIfThenIsNotInvoked()
+    {
+        $factory = $this->createCallableMock();
+        $factory
+            ->expects($this->never())
+            ->method('__invoke');
+
+        new LazyPromise($factory);
+    }
+
+    /** @test */
+    public function shouldCallFactoryIfThenIsInvoked()
+    {
+        $factory = $this->createCallableMock();
+        $factory
+            ->expects($this->once())
+            ->method('__invoke');
+
+        $p = new LazyPromise($factory);
+        $p->then();
+    }
+
+    /** @test */
+    public function shouldReturnPromiseFromFactory()
+    {
+        $factory = $this->createCallableMock();
+        $factory
+            ->expects($this->once())
+            ->method('__invoke')
+            ->will($this->returnValue(new FulfilledPromise(1)));
+
+        $onFulfilled = $this->createCallableMock();
+        $onFulfilled
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $p = new LazyPromise($factory);
+
+        $p->then($onFulfilled);
+    }
+
+    /** @test */
+    public function shouldReturnPromiseIfFactoryReturnsNull()
+    {
+        $factory = $this->createCallableMock();
+        $factory
+            ->expects($this->once())
+            ->method('__invoke')
+            ->will($this->returnValue(null));
+
+        $p = new LazyPromise($factory);
+        $this->assertInstanceOf('React\\Promise\\PromiseInterface', $p->then());
+    }
+
+    /** @test */
+    public function shouldReturnRejectedPromiseIfFactoryThrowsException()
+    {
+        $exception = new \Exception();
+
+        $factory = $this->createCallableMock();
+        $factory
+            ->expects($this->once())
+            ->method('__invoke')
+            ->will($this->throwException($exception));
+
+        $onRejected = $this->createCallableMock();
+        $onRejected
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($exception));
+
+        $p = new LazyPromise($factory);
+
+        $p->then($this->expectCallableNever(), $onRejected);
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/PromiseAdapter/CallbackPromiseAdapter.php b/assets/php/vendor/react/promise/tests/PromiseAdapter/CallbackPromiseAdapter.php
new file mode 100644
index 0000000..bdedf46
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/PromiseAdapter/CallbackPromiseAdapter.php
@@ -0,0 +1,40 @@
+<?php
+
+namespace React\Promise\PromiseAdapter;
+
+use React\Promise;
+
+class CallbackPromiseAdapter implements PromiseAdapterInterface
+{
+    private $callbacks;
+
+    public function __construct(array $callbacks)
+    {
+        $this->callbacks = $callbacks;
+    }
+
+    public function promise()
+    {
+        return call_user_func_array($this->callbacks['promise'], func_get_args());
+    }
+
+    public function resolve()
+    {
+        return call_user_func_array($this->callbacks['resolve'], func_get_args());
+    }
+
+    public function reject()
+    {
+        return call_user_func_array($this->callbacks['reject'], func_get_args());
+    }
+
+    public function notify()
+    {
+        return call_user_func_array($this->callbacks['notify'], func_get_args());
+    }
+
+    public function settle()
+    {
+        return call_user_func_array($this->callbacks['settle'], func_get_args());
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/PromiseAdapter/PromiseAdapterInterface.php b/assets/php/vendor/react/promise/tests/PromiseAdapter/PromiseAdapterInterface.php
new file mode 100644
index 0000000..9157cd4
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/PromiseAdapter/PromiseAdapterInterface.php
@@ -0,0 +1,14 @@
+<?php
+
+namespace React\Promise\PromiseAdapter;
+
+use React\Promise;
+
+interface PromiseAdapterInterface
+{
+    public function promise();
+    public function resolve();
+    public function reject();
+    public function notify();
+    public function settle();
+}
diff --git a/assets/php/vendor/react/promise/tests/PromiseTest.php b/assets/php/vendor/react/promise/tests/PromiseTest.php
new file mode 100644
index 0000000..dc7b733
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/PromiseTest.php
@@ -0,0 +1,84 @@
+<?php
+
+namespace React\Promise;
+
+use React\Promise\PromiseAdapter\CallbackPromiseAdapter;
+
+class PromiseTest extends TestCase
+{
+    use PromiseTest\FullTestTrait;
+
+    public function getPromiseTestAdapter(callable $canceller = null)
+    {
+        $resolveCallback = $rejectCallback = $progressCallback = null;
+
+        $promise = new Promise(function ($resolve, $reject, $progress) use (&$resolveCallback, &$rejectCallback, &$progressCallback) {
+            $resolveCallback  = $resolve;
+            $rejectCallback   = $reject;
+            $progressCallback = $progress;
+        }, $canceller);
+
+        return new CallbackPromiseAdapter([
+            'promise' => function () use ($promise) {
+                return $promise;
+            },
+            'resolve' => $resolveCallback,
+            'reject'  => $rejectCallback,
+            'notify'  => $progressCallback,
+            'settle'  => $resolveCallback,
+        ]);
+    }
+
+    /** @test */
+    public function shouldRejectIfResolverThrowsException()
+    {
+        $exception = new \Exception('foo');
+
+        $promise = new Promise(function () use ($exception) {
+            throw $exception;
+        });
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($exception));
+
+        $promise
+            ->then($this->expectCallableNever(), $mock);
+    }
+
+    /** @test */
+    public function shouldFulfillIfFullfilledWithSimplePromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo('foo'));
+
+        $adapter->promise()
+            ->then($mock);
+
+        $adapter->resolve(new SimpleFulfilledTestPromise());
+    }
+
+    /** @test */
+    public function shouldRejectIfRejectedWithSimplePromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo('foo'));
+
+        $adapter->promise()
+            ->then($this->expectCallableNever(), $mock);
+
+        $adapter->resolve(new SimpleRejectedTestPromise());
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/PromiseTest/CancelTestTrait.php b/assets/php/vendor/react/promise/tests/PromiseTest/CancelTestTrait.php
new file mode 100644
index 0000000..d722d75
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/PromiseTest/CancelTestTrait.php
@@ -0,0 +1,231 @@
+<?php
+
+namespace React\Promise\PromiseTest;
+
+use React\Promise;
+
+trait CancelTestTrait
+{
+    /**
+     * @return \React\Promise\PromiseAdapter\PromiseAdapterInterface
+     */
+    abstract public function getPromiseTestAdapter(callable $canceller = null);
+
+    /** @test */
+    public function cancelShouldCallCancellerWithResolverArguments()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->isType('callable'), $this->isType('callable'), $this->isType('callable'));
+
+        $adapter = $this->getPromiseTestAdapter($mock);
+
+        $adapter->promise()->cancel();
+    }
+
+    /** @test */
+    public function cancelShouldFulfillPromiseIfCancellerFulfills()
+    {
+        $adapter = $this->getPromiseTestAdapter(function ($resolve) {
+            $resolve(1);
+        });
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->promise()
+            ->then($mock, $this->expectCallableNever());
+
+        $adapter->promise()->cancel();
+    }
+
+    /** @test */
+    public function cancelShouldRejectPromiseIfCancellerRejects()
+    {
+        $adapter = $this->getPromiseTestAdapter(function ($resolve, $reject) {
+            $reject(1);
+        });
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->promise()
+            ->then($this->expectCallableNever(), $mock);
+
+        $adapter->promise()->cancel();
+    }
+
+    /** @test */
+    public function cancelShouldRejectPromiseWithExceptionIfCancellerThrows()
+    {
+        $e = new \Exception();
+
+        $adapter = $this->getPromiseTestAdapter(function () use ($e) {
+            throw $e;
+        });
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($e));
+
+        $adapter->promise()
+            ->then($this->expectCallableNever(), $mock);
+
+        $adapter->promise()->cancel();
+    }
+
+    /** @test */
+    public function cancelShouldProgressPromiseIfCancellerNotifies()
+    {
+        $adapter = $this->getPromiseTestAdapter(function ($resolve, $reject, $progress) {
+            $progress(1);
+        });
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->promise()
+            ->then($this->expectCallableNever(), $this->expectCallableNever(), $mock);
+
+        $adapter->promise()->cancel();
+    }
+
+    /** @test */
+    public function cancelShouldCallCancellerOnlyOnceIfCancellerResolves()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->will($this->returnCallback(function ($resolve) {
+                $resolve();
+            }));
+
+        $adapter = $this->getPromiseTestAdapter($mock);
+
+        $adapter->promise()->cancel();
+        $adapter->promise()->cancel();
+    }
+
+    /** @test */
+    public function cancelShouldHaveNoEffectIfCancellerDoesNothing()
+    {
+        $adapter = $this->getPromiseTestAdapter(function () {});
+
+        $adapter->promise()
+            ->then($this->expectCallableNever(), $this->expectCallableNever());
+
+        $adapter->promise()->cancel();
+        $adapter->promise()->cancel();
+    }
+
+    /** @test */
+    public function cancelShouldCallCancellerFromDeepNestedPromiseChain()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke');
+
+        $adapter = $this->getPromiseTestAdapter($mock);
+
+        $promise = $adapter->promise()
+            ->then(function () {
+                return new Promise\Promise(function () {});
+            })
+            ->then(function () {
+                $d = new Promise\Deferred();
+
+                return $d->promise();
+            })
+            ->then(function () {
+                return new Promise\Promise(function () {});
+            });
+
+        $promise->cancel();
+    }
+
+    /** @test */
+    public function cancelCalledOnChildrenSouldOnlyCancelWhenAllChildrenCancelled()
+    {
+        $adapter = $this->getPromiseTestAdapter($this->expectCallableNever());
+
+        $child1 = $adapter->promise()
+            ->then()
+            ->then();
+
+        $adapter->promise()
+            ->then();
+
+        $child1->cancel();
+    }
+
+    /** @test */
+    public function cancelShouldTriggerCancellerWhenAllChildrenCancel()
+    {
+        $adapter = $this->getPromiseTestAdapter($this->expectCallableOnce());
+
+        $child1 = $adapter->promise()
+            ->then()
+            ->then();
+
+        $child2 = $adapter->promise()
+            ->then();
+
+        $child1->cancel();
+        $child2->cancel();
+    }
+
+    /** @test */
+    public function cancelShouldNotTriggerCancellerWhenCancellingOneChildrenMultipleTimes()
+    {
+        $adapter = $this->getPromiseTestAdapter($this->expectCallableNever());
+
+        $child1 = $adapter->promise()
+            ->then()
+            ->then();
+
+        $child2 = $adapter->promise()
+            ->then();
+
+        $child1->cancel();
+        $child1->cancel();
+    }
+
+    /** @test */
+    public function cancelShouldTriggerCancellerOnlyOnceWhenCancellingMultipleTimes()
+    {
+        $adapter = $this->getPromiseTestAdapter($this->expectCallableOnce());
+
+        $adapter->promise()->cancel();
+        $adapter->promise()->cancel();
+    }
+
+    /** @test */
+    public function cancelShouldAlwaysTriggerCancellerWhenCalledOnRootPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter($this->expectCallableOnce());
+
+        $adapter->promise()
+            ->then()
+            ->then();
+
+        $adapter->promise()
+            ->then();
+
+        $adapter->promise()->cancel();
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/PromiseTest/FullTestTrait.php b/assets/php/vendor/react/promise/tests/PromiseTest/FullTestTrait.php
new file mode 100644
index 0000000..3ce45d6
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/PromiseTest/FullTestTrait.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace React\Promise\PromiseTest;
+
+trait FullTestTrait
+{
+    use PromisePendingTestTrait,
+        PromiseSettledTestTrait,
+        PromiseFulfilledTestTrait,
+        PromiseRejectedTestTrait,
+        ResolveTestTrait,
+        RejectTestTrait,
+        NotifyTestTrait,
+        CancelTestTrait;
+}
diff --git a/assets/php/vendor/react/promise/tests/PromiseTest/NotifyTestTrait.php b/assets/php/vendor/react/promise/tests/PromiseTest/NotifyTestTrait.php
new file mode 100644
index 0000000..4501df6
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/PromiseTest/NotifyTestTrait.php
@@ -0,0 +1,336 @@
+<?php
+
+namespace React\Promise\PromiseTest;
+
+trait NotifyTestTrait
+{
+    /**
+     * @return \React\Promise\PromiseAdapter\PromiseAdapterInterface
+     */
+    abstract public function getPromiseTestAdapter(callable $canceller = null);
+
+    /** @test */
+    public function notifyShouldProgress()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $sentinel = new \stdClass();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($sentinel);
+
+        $adapter->promise()
+            ->then($this->expectCallableNever(), $this->expectCallableNever(), $mock);
+
+        $adapter->notify($sentinel);
+    }
+
+    /** @test */
+    public function notifyShouldPropagateProgressToDownstreamPromises()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $sentinel = new \stdClass();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->will($this->returnArgument(0));
+
+        $mock2 = $this->createCallableMock();
+        $mock2
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($sentinel);
+
+        $adapter->promise()
+            ->then(
+                $this->expectCallableNever(),
+                $this->expectCallableNever(),
+                $mock
+            )
+            ->then(
+                $this->expectCallableNever(),
+                $this->expectCallableNever(),
+                $mock2
+            );
+
+        $adapter->notify($sentinel);
+    }
+
+    /** @test */
+    public function notifyShouldPropagateTransformedProgressToDownstreamPromises()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $sentinel = new \stdClass();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->will($this->returnValue($sentinel));
+
+        $mock2 = $this->createCallableMock();
+        $mock2
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($sentinel);
+
+        $adapter->promise()
+            ->then(
+                $this->expectCallableNever(),
+                $this->expectCallableNever(),
+                $mock
+            )
+            ->then(
+                $this->expectCallableNever(),
+                $this->expectCallableNever(),
+                $mock2
+            );
+
+        $adapter->notify(1);
+    }
+
+    /** @test */
+    public function notifyShouldPropagateCaughtExceptionValueAsProgress()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $exception = new \Exception();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->will($this->throwException($exception));
+
+        $mock2 = $this->createCallableMock();
+        $mock2
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($exception));
+
+        $adapter->promise()
+            ->then(
+                $this->expectCallableNever(),
+                $this->expectCallableNever(),
+                $mock
+            )
+            ->then(
+                $this->expectCallableNever(),
+                $this->expectCallableNever(),
+                $mock2
+            );
+
+        $adapter->notify(1);
+    }
+
+    /** @test */
+    public function notifyShouldForwardProgressEventsWhenIntermediaryCallbackTiedToAResolvedPromiseReturnsAPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+        $adapter2 = $this->getPromiseTestAdapter();
+
+        $promise2 = $adapter2->promise();
+
+        $sentinel = new \stdClass();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($sentinel);
+
+        // resolve BEFORE attaching progress handler
+        $adapter->resolve();
+
+        $adapter->promise()
+            ->then(function () use ($promise2) {
+                return $promise2;
+            })
+            ->then(
+                $this->expectCallableNever(),
+                $this->expectCallableNever(),
+                $mock
+            );
+
+        $adapter2->notify($sentinel);
+    }
+
+    /** @test */
+    public function notifyShouldForwardProgressEventsWhenIntermediaryCallbackTiedToAnUnresolvedPromiseReturnsAPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+        $adapter2 = $this->getPromiseTestAdapter();
+
+        $promise2 = $adapter2->promise();
+
+        $sentinel = new \stdClass();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($sentinel);
+
+        $adapter->promise()
+            ->then(function () use ($promise2) {
+                return $promise2;
+            })
+            ->then(
+                $this->expectCallableNever(),
+                $this->expectCallableNever(),
+                $mock
+            );
+
+        // resolve AFTER attaching progress handler
+        $adapter->resolve();
+        $adapter2->notify($sentinel);
+    }
+
+    /** @test */
+    public function notifyShouldForwardProgressWhenResolvedWithAnotherPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+        $adapter2 = $this->getPromiseTestAdapter();
+
+        $sentinel = new \stdClass();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->will($this->returnValue($sentinel));
+
+        $mock2 = $this->createCallableMock();
+        $mock2
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($sentinel);
+
+        $adapter->promise()
+            ->then(
+                $this->expectCallableNever(),
+                $this->expectCallableNever(),
+                $mock
+            )
+            ->then(
+                $this->expectCallableNever(),
+                $this->expectCallableNever(),
+                $mock2
+            );
+
+        $adapter->resolve($adapter2->promise());
+        $adapter2->notify($sentinel);
+    }
+
+    /** @test */
+    public function notifyShouldAllowResolveAfterProgress()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->at(0))
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+        $mock
+            ->expects($this->at(1))
+            ->method('__invoke')
+            ->with($this->identicalTo(2));
+
+        $adapter->promise()
+            ->then(
+                $mock,
+                $this->expectCallableNever(),
+                $mock
+            );
+
+        $adapter->notify(1);
+        $adapter->resolve(2);
+    }
+
+    /** @test */
+    public function notifyShouldAllowRejectAfterProgress()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->at(0))
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+        $mock
+            ->expects($this->at(1))
+            ->method('__invoke')
+            ->with($this->identicalTo(2));
+
+        $adapter->promise()
+            ->then(
+                $this->expectCallableNever(),
+                $mock,
+                $mock
+            );
+
+        $adapter->notify(1);
+        $adapter->reject(2);
+    }
+
+    /** @test */
+    public function notifyShouldReturnSilentlyOnProgressWhenAlreadyRejected()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $adapter->reject(1);
+
+        $this->assertNull($adapter->notify());
+    }
+
+    /** @test */
+    public function notifyShouldInvokeProgressHandler()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->promise()->progress($mock);
+        $adapter->notify(1);
+    }
+
+    /** @test */
+    public function notifyShouldInvokeProgressHandlerFromDone()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $this->assertNull($adapter->promise()->done(null, null, $mock));
+        $adapter->notify(1);
+    }
+
+    /** @test */
+    public function notifyShouldThrowExceptionThrownProgressHandlerFromDone()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->setExpectedException('\Exception', 'UnhandledRejectionException');
+
+        $this->assertNull($adapter->promise()->done(null, null, function () {
+            throw new \Exception('UnhandledRejectionException');
+        }));
+        $adapter->notify(1);
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/PromiseTest/PromiseFulfilledTestTrait.php b/assets/php/vendor/react/promise/tests/PromiseTest/PromiseFulfilledTestTrait.php
new file mode 100644
index 0000000..428230b
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/PromiseTest/PromiseFulfilledTestTrait.php
@@ -0,0 +1,351 @@
+<?php
+
+namespace React\Promise\PromiseTest;
+
+trait PromiseFulfilledTestTrait
+{
+    /**
+     * @return \React\Promise\PromiseAdapter\PromiseAdapterInterface
+     */
+    abstract public function getPromiseTestAdapter(callable $canceller = null);
+
+    /** @test */
+    public function fulfilledPromiseShouldBeImmutable()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->resolve(1);
+        $adapter->resolve(2);
+
+        $adapter->promise()
+            ->then(
+                $mock,
+                $this->expectCallableNever()
+            );
+    }
+
+    /** @test */
+    public function fulfilledPromiseShouldInvokeNewlyAddedCallback()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $adapter->resolve(1);
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->promise()
+            ->then($mock, $this->expectCallableNever());
+    }
+
+    /** @test */
+    public function thenShouldForwardResultWhenCallbackIsNull()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->resolve(1);
+        $adapter->promise()
+            ->then(
+                null,
+                $this->expectCallableNever()
+            )
+            ->then(
+                $mock,
+                $this->expectCallableNever()
+            );
+    }
+
+    /** @test */
+    public function thenShouldForwardCallbackResultToNextCallback()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(2));
+
+        $adapter->resolve(1);
+        $adapter->promise()
+            ->then(
+                function ($val) {
+                    return $val + 1;
+                },
+                $this->expectCallableNever()
+            )
+            ->then(
+                $mock,
+                $this->expectCallableNever()
+            );
+    }
+
+    /** @test */
+    public function thenShouldForwardPromisedCallbackResultValueToNextCallback()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(2));
+
+        $adapter->resolve(1);
+        $adapter->promise()
+            ->then(
+                function ($val) {
+                    return \React\Promise\resolve($val + 1);
+                },
+                $this->expectCallableNever()
+            )
+            ->then(
+                $mock,
+                $this->expectCallableNever()
+            );
+    }
+
+    /** @test */
+    public function thenShouldSwitchFromCallbacksToErrbacksWhenCallbackReturnsARejection()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(2));
+
+        $adapter->resolve(1);
+        $adapter->promise()
+            ->then(
+                function ($val) {
+                    return \React\Promise\reject($val + 1);
+                },
+                $this->expectCallableNever()
+            )
+            ->then(
+                $this->expectCallableNever(),
+                $mock
+            );
+    }
+
+    /** @test */
+    public function thenShouldSwitchFromCallbacksToErrbacksWhenCallbackThrows()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $exception = new \Exception();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->will($this->throwException($exception));
+
+        $mock2 = $this->createCallableMock();
+        $mock2
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($exception));
+
+        $adapter->resolve(1);
+        $adapter->promise()
+            ->then(
+                $mock,
+                $this->expectCallableNever()
+            )
+            ->then(
+                $this->expectCallableNever(),
+                $mock2
+            );
+    }
+
+    /** @test */
+    public function cancelShouldReturnNullForFulfilledPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $adapter->resolve();
+
+        $this->assertNull($adapter->promise()->cancel());
+    }
+
+    /** @test */
+    public function cancelShouldHaveNoEffectForFulfilledPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter($this->expectCallableNever());
+
+        $adapter->resolve();
+
+        $adapter->promise()->cancel();
+    }
+
+    /** @test */
+    public function doneShouldInvokeFulfillmentHandlerForFulfilledPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->resolve(1);
+        $this->assertNull($adapter->promise()->done($mock));
+    }
+
+    /** @test */
+    public function doneShouldThrowExceptionThrownFulfillmentHandlerForFulfilledPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->setExpectedException('\Exception', 'UnhandledRejectionException');
+
+        $adapter->resolve(1);
+        $this->assertNull($adapter->promise()->done(function () {
+            throw new \Exception('UnhandledRejectionException');
+        }));
+    }
+
+    /** @test */
+    public function doneShouldThrowUnhandledRejectionExceptionWhenFulfillmentHandlerRejectsForFulfilledPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->setExpectedException('React\\Promise\\UnhandledRejectionException');
+
+        $adapter->resolve(1);
+        $this->assertNull($adapter->promise()->done(function () {
+            return \React\Promise\reject();
+        }));
+    }
+
+    /** @test */
+    public function otherwiseShouldNotInvokeRejectionHandlerForFulfilledPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $adapter->resolve(1);
+        $adapter->promise()->otherwise($this->expectCallableNever());
+    }
+
+    /** @test */
+    public function alwaysShouldNotSuppressValueForFulfilledPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $value = new \stdClass();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($value));
+
+        $adapter->resolve($value);
+        $adapter->promise()
+            ->always(function () {})
+            ->then($mock);
+    }
+
+    /** @test */
+    public function alwaysShouldNotSuppressValueWhenHandlerReturnsANonPromiseForFulfilledPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $value = new \stdClass();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($value));
+
+        $adapter->resolve($value);
+        $adapter->promise()
+            ->always(function () {
+                return 1;
+            })
+            ->then($mock);
+    }
+
+    /** @test */
+    public function alwaysShouldNotSuppressValueWhenHandlerReturnsAPromiseForFulfilledPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $value = new \stdClass();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($value));
+
+        $adapter->resolve($value);
+        $adapter->promise()
+            ->always(function () {
+                return \React\Promise\resolve(1);
+            })
+            ->then($mock);
+    }
+
+    /** @test */
+    public function alwaysShouldRejectWhenHandlerThrowsForFulfilledPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $exception = new \Exception();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($exception));
+
+        $adapter->resolve(1);
+        $adapter->promise()
+            ->always(function () use ($exception) {
+                throw $exception;
+            })
+            ->then(null, $mock);
+    }
+
+    /** @test */
+    public function alwaysShouldRejectWhenHandlerRejectsForFulfilledPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $exception = new \Exception();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($exception));
+
+        $adapter->resolve(1);
+        $adapter->promise()
+            ->always(function () use ($exception) {
+                return \React\Promise\reject($exception);
+            })
+            ->then(null, $mock);
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/PromiseTest/PromisePendingTestTrait.php b/assets/php/vendor/react/promise/tests/PromiseTest/PromisePendingTestTrait.php
new file mode 100644
index 0000000..a4f48ee
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/PromiseTest/PromisePendingTestTrait.php
@@ -0,0 +1,68 @@
+<?php
+
+namespace React\Promise\PromiseTest;
+
+trait PromisePendingTestTrait
+{
+    /**
+     * @return \React\Promise\PromiseAdapter\PromiseAdapterInterface
+     */
+    abstract public function getPromiseTestAdapter(callable $canceller = null);
+
+    /** @test */
+    public function thenShouldReturnAPromiseForPendingPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->assertInstanceOf('React\\Promise\\PromiseInterface', $adapter->promise()->then());
+    }
+
+    /** @test */
+    public function thenShouldReturnAllowNullForPendingPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->assertInstanceOf('React\\Promise\\PromiseInterface', $adapter->promise()->then(null, null, null));
+    }
+
+    /** @test */
+    public function cancelShouldReturnNullForPendingPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->assertNull($adapter->promise()->cancel());
+    }
+
+    /** @test */
+    public function doneShouldReturnNullForPendingPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->assertNull($adapter->promise()->done());
+    }
+
+    /** @test */
+    public function doneShouldReturnAllowNullForPendingPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->assertNull($adapter->promise()->done(null, null, null));
+    }
+
+    /** @test */
+    public function otherwiseShouldNotInvokeRejectionHandlerForPendingPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $adapter->settle();
+        $adapter->promise()->otherwise($this->expectCallableNever());
+    }
+
+    /** @test */
+    public function alwaysShouldReturnAPromiseForPendingPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->assertInstanceOf('React\\Promise\\PromiseInterface', $adapter->promise()->always(function () {}));
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/PromiseTest/PromiseRejectedTestTrait.php b/assets/php/vendor/react/promise/tests/PromiseTest/PromiseRejectedTestTrait.php
new file mode 100644
index 0000000..98d1dcf
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/PromiseTest/PromiseRejectedTestTrait.php
@@ -0,0 +1,512 @@
+<?php
+
+namespace React\Promise\PromiseTest;
+
+use React\Promise\Deferred;
+use React\Promise\UnhandledRejectionException;
+
+trait PromiseRejectedTestTrait
+{
+    /**
+     * @return \React\Promise\PromiseAdapter\PromiseAdapterInterface
+     */
+    abstract public function getPromiseTestAdapter(callable $canceller = null);
+
+    /** @test */
+    public function rejectedPromiseShouldBeImmutable()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->reject(1);
+        $adapter->reject(2);
+
+        $adapter->promise()
+            ->then(
+                $this->expectCallableNever(),
+                $mock
+            );
+    }
+
+    /** @test */
+    public function rejectedPromiseShouldInvokeNewlyAddedCallback()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $adapter->reject(1);
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->promise()
+            ->then($this->expectCallableNever(), $mock);
+    }
+
+    /** @test */
+    public function shouldForwardUndefinedRejectionValue()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with(null);
+
+        $adapter->reject(1);
+        $adapter->promise()
+            ->then(
+                $this->expectCallableNever(),
+                function () {
+                    // Presence of rejection handler is enough to switch back
+                    // to resolve mode, even though it returns undefined.
+                    // The ONLY way to propagate a rejection is to re-throw or
+                    // return a rejected promise;
+                }
+            )
+            ->then(
+                $mock,
+                $this->expectCallableNever()
+            );
+    }
+
+    /** @test */
+    public function shouldSwitchFromErrbacksToCallbacksWhenErrbackDoesNotExplicitlyPropagate()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(2));
+
+        $adapter->reject(1);
+        $adapter->promise()
+            ->then(
+                $this->expectCallableNever(),
+                function ($val) {
+                    return $val + 1;
+                }
+            )
+            ->then(
+                $mock,
+                $this->expectCallableNever()
+            );
+    }
+
+    /** @test */
+    public function shouldSwitchFromErrbacksToCallbacksWhenErrbackReturnsAResolution()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(2));
+
+        $adapter->reject(1);
+        $adapter->promise()
+            ->then(
+                $this->expectCallableNever(),
+                function ($val) {
+                    return \React\Promise\resolve($val + 1);
+                }
+            )
+            ->then(
+                $mock,
+                $this->expectCallableNever()
+            );
+    }
+
+    /** @test */
+    public function shouldPropagateRejectionsWhenErrbackThrows()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $exception = new \Exception();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->will($this->throwException($exception));
+
+        $mock2 = $this->createCallableMock();
+        $mock2
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($exception));
+
+        $adapter->reject(1);
+        $adapter->promise()
+            ->then(
+                $this->expectCallableNever(),
+                $mock
+            )
+            ->then(
+                $this->expectCallableNever(),
+                $mock2
+            );
+    }
+
+    /** @test */
+    public function shouldPropagateRejectionsWhenErrbackReturnsARejection()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(2));
+
+        $adapter->reject(1);
+        $adapter->promise()
+            ->then(
+                $this->expectCallableNever(),
+                function ($val) {
+                    return \React\Promise\reject($val + 1);
+                }
+            )
+            ->then(
+                $this->expectCallableNever(),
+                $mock
+            );
+    }
+
+    /** @test */
+    public function doneShouldInvokeRejectionHandlerForRejectedPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->reject(1);
+        $this->assertNull($adapter->promise()->done(null, $mock));
+    }
+
+    /** @test */
+    public function doneShouldThrowExceptionThrownByRejectionHandlerForRejectedPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->setExpectedException('\Exception', 'UnhandledRejectionException');
+
+        $adapter->reject(1);
+        $this->assertNull($adapter->promise()->done(null, function () {
+            throw new \Exception('UnhandledRejectionException');
+        }));
+    }
+
+    /** @test */
+    public function doneShouldThrowUnhandledRejectionExceptionWhenRejectedWithNonExceptionForRejectedPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->setExpectedException('React\\Promise\\UnhandledRejectionException');
+
+        $adapter->reject(1);
+        $this->assertNull($adapter->promise()->done());
+    }
+
+    /** @test */
+    public function unhandledRejectionExceptionThrownByDoneHoldsRejectionValue()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $expected = new \stdClass();
+
+        $adapter->reject($expected);
+
+        try {
+            $adapter->promise()->done();
+        } catch (UnhandledRejectionException $e) {
+            $this->assertSame($expected, $e->getReason());
+            return;
+        }
+
+        $this->fail();
+    }
+
+    /** @test */
+    public function doneShouldThrowUnhandledRejectionExceptionWhenRejectionHandlerRejectsForRejectedPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->setExpectedException('React\\Promise\\UnhandledRejectionException');
+
+        $adapter->reject(1);
+        $this->assertNull($adapter->promise()->done(null, function () {
+            return \React\Promise\reject();
+        }));
+    }
+
+    /** @test */
+    public function doneShouldThrowRejectionExceptionWhenRejectionHandlerRejectsWithExceptionForRejectedPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->setExpectedException('\Exception', 'UnhandledRejectionException');
+
+        $adapter->reject(1);
+        $this->assertNull($adapter->promise()->done(null, function () {
+            return \React\Promise\reject(new \Exception('UnhandledRejectionException'));
+        }));
+    }
+
+    /** @test */
+    public function doneShouldThrowExceptionProvidedAsRejectionValueForRejectedPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->setExpectedException('\Exception', 'UnhandledRejectionException');
+
+        $adapter->reject(new \Exception('UnhandledRejectionException'));
+        $this->assertNull($adapter->promise()->done());
+    }
+
+    /** @test */
+    public function doneShouldThrowWithDeepNestingPromiseChainsForRejectedPromise()
+    {
+        $this->setExpectedException('\Exception', 'UnhandledRejectionException');
+
+        $exception = new \Exception('UnhandledRejectionException');
+
+        $d = new Deferred();
+        $d->resolve();
+
+        $result = \React\Promise\resolve(\React\Promise\resolve($d->promise()->then(function () use ($exception) {
+            $d = new Deferred();
+            $d->resolve();
+
+            return \React\Promise\resolve($d->promise()->then(function () {}))->then(
+                function () use ($exception) {
+                    throw $exception;
+                }
+            );
+        })));
+
+        $result->done();
+    }
+
+    /** @test */
+    public function doneShouldRecoverWhenRejectionHandlerCatchesExceptionForRejectedPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $adapter->reject(new \Exception('UnhandledRejectionException'));
+        $this->assertNull($adapter->promise()->done(null, function (\Exception $e) {
+
+        }));
+    }
+
+    /** @test */
+    public function otherwiseShouldInvokeRejectionHandlerForRejectedPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->reject(1);
+        $adapter->promise()->otherwise($mock);
+    }
+
+    /** @test */
+    public function otherwiseShouldInvokeNonTypeHintedRejectionHandlerIfReasonIsAnExceptionForRejectedPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $exception = new \Exception();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($exception));
+
+        $adapter->reject($exception);
+        $adapter->promise()
+            ->otherwise(function ($reason) use ($mock) {
+                $mock($reason);
+            });
+    }
+
+    /** @test */
+    public function otherwiseShouldInvokeRejectionHandlerIfReasonMatchesTypehintForRejectedPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $exception = new \InvalidArgumentException();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($exception));
+
+        $adapter->reject($exception);
+        $adapter->promise()
+            ->otherwise(function (\InvalidArgumentException $reason) use ($mock) {
+                $mock($reason);
+            });
+    }
+
+    /** @test */
+    public function otherwiseShouldNotInvokeRejectionHandlerIfReaonsDoesNotMatchTypehintForRejectedPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $exception = new \Exception();
+
+        $mock = $this->expectCallableNever();
+
+        $adapter->reject($exception);
+        $adapter->promise()
+            ->otherwise(function (\InvalidArgumentException $reason) use ($mock) {
+                $mock($reason);
+            });
+    }
+
+    /** @test */
+    public function alwaysShouldNotSuppressRejectionForRejectedPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $exception = new \Exception();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($exception));
+
+        $adapter->reject($exception);
+        $adapter->promise()
+            ->always(function () {})
+            ->then(null, $mock);
+    }
+
+    /** @test */
+    public function alwaysShouldNotSuppressRejectionWhenHandlerReturnsANonPromiseForRejectedPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $exception = new \Exception();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($exception));
+
+        $adapter->reject($exception);
+        $adapter->promise()
+            ->always(function () {
+                return 1;
+            })
+            ->then(null, $mock);
+    }
+
+    /** @test */
+    public function alwaysShouldNotSuppressRejectionWhenHandlerReturnsAPromiseForRejectedPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $exception = new \Exception();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($exception));
+
+        $adapter->reject($exception);
+        $adapter->promise()
+            ->always(function () {
+                return \React\Promise\resolve(1);
+            })
+            ->then(null, $mock);
+    }
+
+    /** @test */
+    public function alwaysShouldRejectWhenHandlerThrowsForRejectedPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $exception1 = new \Exception();
+        $exception2 = new \Exception();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($exception2));
+
+        $adapter->reject($exception1);
+        $adapter->promise()
+            ->always(function () use ($exception2) {
+                throw $exception2;
+            })
+            ->then(null, $mock);
+    }
+
+    /** @test */
+    public function alwaysShouldRejectWhenHandlerRejectsForRejectedPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $exception1 = new \Exception();
+        $exception2 = new \Exception();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($exception2));
+
+        $adapter->reject($exception1);
+        $adapter->promise()
+            ->always(function () use ($exception2) {
+                return \React\Promise\reject($exception2);
+            })
+            ->then(null, $mock);
+    }
+
+    /** @test */
+    public function cancelShouldReturnNullForRejectedPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $adapter->reject();
+
+        $this->assertNull($adapter->promise()->cancel());
+    }
+
+    /** @test */
+    public function cancelShouldHaveNoEffectForRejectedPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter($this->expectCallableNever());
+
+        $adapter->reject();
+
+        $adapter->promise()->cancel();
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/PromiseTest/PromiseSettledTestTrait.php b/assets/php/vendor/react/promise/tests/PromiseTest/PromiseSettledTestTrait.php
new file mode 100644
index 0000000..e363b6d
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/PromiseTest/PromiseSettledTestTrait.php
@@ -0,0 +1,86 @@
+<?php
+
+namespace React\Promise\PromiseTest;
+
+trait PromiseSettledTestTrait
+{
+    /**
+     * @return \React\Promise\PromiseAdapter\PromiseAdapterInterface
+     */
+    abstract public function getPromiseTestAdapter(callable $canceller = null);
+
+    /** @test */
+    public function thenShouldReturnAPromiseForSettledPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $adapter->settle();
+        $this->assertInstanceOf('React\\Promise\\PromiseInterface', $adapter->promise()->then());
+    }
+
+    /** @test */
+    public function thenShouldReturnAllowNullForSettledPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $adapter->settle();
+        $this->assertInstanceOf('React\\Promise\\PromiseInterface', $adapter->promise()->then(null, null, null));
+    }
+
+    /** @test */
+    public function cancelShouldReturnNullForSettledPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $adapter->settle();
+
+        $this->assertNull($adapter->promise()->cancel());
+    }
+
+    /** @test */
+    public function cancelShouldHaveNoEffectForSettledPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter($this->expectCallableNever());
+
+        $adapter->settle();
+
+        $adapter->promise()->cancel();
+    }
+
+    /** @test */
+    public function doneShouldReturnNullForSettledPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $adapter->settle();
+        $this->assertNull($adapter->promise()->done(null, function () {}));
+    }
+
+    /** @test */
+    public function doneShouldReturnAllowNullForSettledPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $adapter->settle();
+        $this->assertNull($adapter->promise()->done(null, function () {}, null));
+    }
+
+    /** @test */
+    public function progressShouldNotInvokeProgressHandlerForSettledPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $adapter->settle();
+        $adapter->promise()->progress($this->expectCallableNever());
+        $adapter->notify();
+    }
+
+    /** @test */
+    public function alwaysShouldReturnAPromiseForSettledPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $adapter->settle();
+        $this->assertInstanceOf('React\\Promise\\PromiseInterface', $adapter->promise()->always(function () {}));
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/PromiseTest/RejectTestTrait.php b/assets/php/vendor/react/promise/tests/PromiseTest/RejectTestTrait.php
new file mode 100644
index 0000000..063f178
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/PromiseTest/RejectTestTrait.php
@@ -0,0 +1,368 @@
+<?php
+
+namespace React\Promise\PromiseTest;
+
+use React\Promise;
+use React\Promise\Deferred;
+
+trait RejectTestTrait
+{
+    /**
+     * @return \React\Promise\PromiseAdapter\PromiseAdapterInterface
+     */
+    abstract public function getPromiseTestAdapter(callable $canceller = null);
+
+    /** @test */
+    public function rejectShouldRejectWithAnImmediateValue()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->promise()
+            ->then($this->expectCallableNever(), $mock);
+
+        $adapter->reject(1);
+    }
+
+    /** @test */
+    public function rejectShouldRejectWithFulfilledPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->promise()
+            ->then($this->expectCallableNever(), $mock);
+
+        $adapter->reject(Promise\resolve(1));
+    }
+
+    /** @test */
+    public function rejectShouldRejectWithRejectedPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->promise()
+            ->then($this->expectCallableNever(), $mock);
+
+        $adapter->reject(Promise\reject(1));
+    }
+
+    /** @test */
+    public function rejectShouldForwardReasonWhenCallbackIsNull()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->promise()
+            ->then(
+                $this->expectCallableNever()
+            )
+            ->then(
+                $this->expectCallableNever(),
+                $mock
+            );
+
+        $adapter->reject(1);
+    }
+
+    /** @test */
+    public function rejectShouldMakePromiseImmutable()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->promise()
+            ->then(null, function ($value) use ($adapter) {
+                $adapter->reject(3);
+
+                return Promise\reject($value);
+            })
+            ->then(
+                $this->expectCallableNever(),
+                $mock
+            );
+
+        $adapter->reject(1);
+        $adapter->reject(2);
+    }
+
+    /** @test */
+    public function notifyShouldInvokeOtherwiseHandler()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->promise()
+            ->otherwise($mock);
+
+        $adapter->reject(1);
+    }
+
+    /** @test */
+    public function doneShouldInvokeRejectionHandler()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $this->assertNull($adapter->promise()->done(null, $mock));
+        $adapter->reject(1);
+    }
+
+    /** @test */
+    public function doneShouldThrowExceptionThrownByRejectionHandler()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->setExpectedException('\Exception', 'UnhandledRejectionException');
+
+        $this->assertNull($adapter->promise()->done(null, function () {
+            throw new \Exception('UnhandledRejectionException');
+        }));
+        $adapter->reject(1);
+    }
+
+    /** @test */
+    public function doneShouldThrowUnhandledRejectionExceptionWhenRejectedWithNonException()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->setExpectedException('React\\Promise\\UnhandledRejectionException');
+
+        $this->assertNull($adapter->promise()->done());
+        $adapter->reject(1);
+    }
+
+    /** @test */
+    public function doneShouldThrowUnhandledRejectionExceptionWhenRejectionHandlerRejects()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->setExpectedException('React\\Promise\\UnhandledRejectionException');
+
+        $this->assertNull($adapter->promise()->done(null, function () {
+            return \React\Promise\reject();
+        }));
+        $adapter->reject(1);
+    }
+
+    /** @test */
+    public function doneShouldThrowRejectionExceptionWhenRejectionHandlerRejectsWithException()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->setExpectedException('\Exception', 'UnhandledRejectionException');
+
+        $this->assertNull($adapter->promise()->done(null, function () {
+            return \React\Promise\reject(new \Exception('UnhandledRejectionException'));
+        }));
+        $adapter->reject(1);
+    }
+
+    /** @test */
+    public function doneShouldThrowUnhandledRejectionExceptionWhenRejectionHandlerRetunsPendingPromiseWhichRejectsLater()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->setExpectedException('React\\Promise\\UnhandledRejectionException');
+
+        $d = new Deferred();
+        $promise = $d->promise();
+
+        $this->assertNull($adapter->promise()->done(null, function () use ($promise) {
+            return $promise;
+        }));
+        $adapter->reject(1);
+        $d->reject(1);
+    }
+
+    /** @test */
+    public function doneShouldThrowExceptionProvidedAsRejectionValue()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->setExpectedException('\Exception', 'UnhandledRejectionException');
+
+        $this->assertNull($adapter->promise()->done());
+        $adapter->reject(new \Exception('UnhandledRejectionException'));
+    }
+
+    /** @test */
+    public function doneShouldThrowWithDeepNestingPromiseChains()
+    {
+        $this->setExpectedException('\Exception', 'UnhandledRejectionException');
+
+        $exception = new \Exception('UnhandledRejectionException');
+
+        $d = new Deferred();
+
+        $result = \React\Promise\resolve(\React\Promise\resolve($d->promise()->then(function () use ($exception) {
+            $d = new Deferred();
+            $d->resolve();
+
+            return \React\Promise\resolve($d->promise()->then(function () {}))->then(
+                function () use ($exception) {
+                    throw $exception;
+                }
+            );
+        })));
+
+        $result->done();
+
+        $d->resolve();
+    }
+
+    /** @test */
+    public function doneShouldRecoverWhenRejectionHandlerCatchesException()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->assertNull($adapter->promise()->done(null, function (\Exception $e) {
+
+        }));
+        $adapter->reject(new \Exception('UnhandledRejectionException'));
+    }
+
+    /** @test */
+    public function alwaysShouldNotSuppressRejection()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $exception = new \Exception();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($exception));
+
+        $adapter->promise()
+            ->always(function () {})
+            ->then(null, $mock);
+
+        $adapter->reject($exception);
+    }
+
+    /** @test */
+    public function alwaysShouldNotSuppressRejectionWhenHandlerReturnsANonPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $exception = new \Exception();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($exception));
+
+        $adapter->promise()
+            ->always(function () {
+                return 1;
+            })
+            ->then(null, $mock);
+
+        $adapter->reject($exception);
+    }
+
+    /** @test */
+    public function alwaysShouldNotSuppressRejectionWhenHandlerReturnsAPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $exception = new \Exception();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($exception));
+
+        $adapter->promise()
+            ->always(function () {
+                return \React\Promise\resolve(1);
+            })
+            ->then(null, $mock);
+
+        $adapter->reject($exception);
+    }
+
+    /** @test */
+    public function alwaysShouldRejectWhenHandlerThrowsForRejection()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $exception = new \Exception();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($exception));
+
+        $adapter->promise()
+            ->always(function () use ($exception) {
+                throw $exception;
+            })
+            ->then(null, $mock);
+
+        $adapter->reject($exception);
+    }
+
+    /** @test */
+    public function alwaysShouldRejectWhenHandlerRejectsForRejection()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $exception = new \Exception();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($exception));
+
+        $adapter->promise()
+            ->always(function () use ($exception) {
+                return \React\Promise\reject($exception);
+            })
+            ->then(null, $mock);
+
+        $adapter->reject($exception);
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/PromiseTest/ResolveTestTrait.php b/assets/php/vendor/react/promise/tests/PromiseTest/ResolveTestTrait.php
new file mode 100644
index 0000000..0736d35
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/PromiseTest/ResolveTestTrait.php
@@ -0,0 +1,312 @@
+<?php
+
+namespace React\Promise\PromiseTest;
+
+use React\Promise;
+
+trait ResolveTestTrait
+{
+    /**
+     * @return \React\Promise\PromiseAdapter\PromiseAdapterInterface
+     */
+    abstract public function getPromiseTestAdapter(callable $canceller = null);
+
+    /** @test */
+    public function resolveShouldResolve()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->promise()
+            ->then($mock);
+
+        $adapter->resolve(1);
+    }
+
+    /** @test */
+    public function resolveShouldResolveWithPromisedValue()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->promise()
+            ->then($mock);
+
+        $adapter->resolve(Promise\resolve(1));
+    }
+
+    /** @test */
+    public function resolveShouldRejectWhenResolvedWithRejectedPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->promise()
+            ->then($this->expectCallableNever(), $mock);
+
+        $adapter->resolve(Promise\reject(1));
+    }
+
+    /** @test */
+    public function resolveShouldForwardValueWhenCallbackIsNull()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->promise()
+            ->then(
+                null,
+                $this->expectCallableNever()
+            )
+            ->then(
+                $mock,
+                $this->expectCallableNever()
+            );
+
+        $adapter->resolve(1);
+    }
+
+    /** @test */
+    public function resolveShouldMakePromiseImmutable()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $adapter->promise()
+            ->then(function ($value) use ($adapter) {
+                $adapter->resolve(3);
+
+                return $value;
+            })
+            ->then(
+                $mock,
+                $this->expectCallableNever()
+            );
+
+        $adapter->resolve(1);
+        $adapter->resolve(2);
+    }
+
+    /**
+     * @test
+     */
+    public function resolveShouldRejectWhenResolvedWithItself()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with(new \LogicException('Cannot resolve a promise with itself.'));
+
+        $adapter->promise()
+            ->then(
+                $this->expectCallableNever(),
+                $mock
+            );
+
+        $adapter->resolve($adapter->promise());
+    }
+
+    /**
+     * @test
+     */
+    public function resolveShouldRejectWhenResolvedWithAPromiseWhichFollowsItself()
+    {
+        $adapter1 = $this->getPromiseTestAdapter();
+        $adapter2 = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with(new \LogicException('Cannot resolve a promise with itself.'));
+
+        $promise1 = $adapter1->promise();
+
+        $promise2 = $adapter2->promise();
+
+        $promise2->then(
+            $this->expectCallableNever(),
+            $mock
+        );
+
+        $adapter1->resolve($promise2);
+        $adapter2->resolve($promise1);
+    }
+
+    /** @test */
+    public function doneShouldInvokeFulfillmentHandler()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo(1));
+
+        $this->assertNull($adapter->promise()->done($mock));
+        $adapter->resolve(1);
+    }
+
+    /** @test */
+    public function doneShouldThrowExceptionThrownFulfillmentHandler()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->setExpectedException('\Exception', 'UnhandledRejectionException');
+
+        $this->assertNull($adapter->promise()->done(function () {
+            throw new \Exception('UnhandledRejectionException');
+        }));
+        $adapter->resolve(1);
+    }
+
+    /** @test */
+    public function doneShouldThrowUnhandledRejectionExceptionWhenFulfillmentHandlerRejects()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $this->setExpectedException('React\\Promise\\UnhandledRejectionException');
+
+        $this->assertNull($adapter->promise()->done(function () {
+            return \React\Promise\reject();
+        }));
+        $adapter->resolve(1);
+    }
+
+    /** @test */
+    public function alwaysShouldNotSuppressValue()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $value = new \stdClass();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($value));
+
+        $adapter->promise()
+            ->always(function () {})
+            ->then($mock);
+
+        $adapter->resolve($value);
+    }
+
+    /** @test */
+    public function alwaysShouldNotSuppressValueWhenHandlerReturnsANonPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $value = new \stdClass();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($value));
+
+        $adapter->promise()
+            ->always(function () {
+                return 1;
+            })
+            ->then($mock);
+
+        $adapter->resolve($value);
+    }
+
+    /** @test */
+    public function alwaysShouldNotSuppressValueWhenHandlerReturnsAPromise()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $value = new \stdClass();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($value));
+
+        $adapter->promise()
+            ->always(function () {
+                return \React\Promise\resolve(1);
+            })
+            ->then($mock);
+
+        $adapter->resolve($value);
+    }
+
+    /** @test */
+    public function alwaysShouldRejectWhenHandlerThrowsForFulfillment()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $exception = new \Exception();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($exception));
+
+        $adapter->promise()
+            ->always(function () use ($exception) {
+                throw $exception;
+            })
+            ->then(null, $mock);
+
+        $adapter->resolve(1);
+    }
+
+    /** @test */
+    public function alwaysShouldRejectWhenHandlerRejectsForFulfillment()
+    {
+        $adapter = $this->getPromiseTestAdapter();
+
+        $exception = new \Exception();
+
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($this->identicalTo($exception));
+
+        $adapter->promise()
+            ->always(function () use ($exception) {
+                return \React\Promise\reject($exception);
+            })
+            ->then(null, $mock);
+
+        $adapter->resolve(1);
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/RejectedPromiseTest.php b/assets/php/vendor/react/promise/tests/RejectedPromiseTest.php
new file mode 100644
index 0000000..c886b00
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/RejectedPromiseTest.php
@@ -0,0 +1,50 @@
+<?php
+
+namespace React\Promise;
+
+use React\Promise\PromiseAdapter\CallbackPromiseAdapter;
+
+class RejectedPromiseTest extends TestCase
+{
+    use PromiseTest\PromiseSettledTestTrait,
+        PromiseTest\PromiseRejectedTestTrait;
+
+    public function getPromiseTestAdapter(callable $canceller = null)
+    {
+        $promise = null;
+
+        return new CallbackPromiseAdapter([
+            'promise' => function () use (&$promise) {
+                if (!$promise) {
+                    throw new \LogicException('RejectedPromise must be rejected before obtaining the promise');
+                }
+
+                return $promise;
+            },
+            'resolve' => function () {
+                throw new \LogicException('You cannot call resolve() for React\Promise\RejectedPromise');
+            },
+            'reject' => function ($reason = null) use (&$promise) {
+                if (!$promise) {
+                    $promise = new RejectedPromise($reason);
+                }
+            },
+            'notify' => function () {
+                // no-op
+            },
+            'settle' => function ($reason = null) use (&$promise) {
+                if (!$promise) {
+                    $promise = new RejectedPromise($reason);
+                }
+            },
+        ]);
+    }
+
+    /** @test */
+    public function shouldThrowExceptionIfConstructedWithAPromise()
+    {
+        $this->setExpectedException('\InvalidArgumentException');
+
+        return new RejectedPromise(new RejectedPromise());
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/Stub/CallableStub.php b/assets/php/vendor/react/promise/tests/Stub/CallableStub.php
new file mode 100644
index 0000000..0120893
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/Stub/CallableStub.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace React\Promise\Stub;
+
+class CallableStub
+{
+    public function __invoke()
+    {
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/TestCase.php b/assets/php/vendor/react/promise/tests/TestCase.php
new file mode 100644
index 0000000..c9274f4
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/TestCase.php
@@ -0,0 +1,43 @@
+<?php
+
+namespace React\Promise;
+
+class TestCase extends \PHPUnit_Framework_TestCase
+{
+    public function expectCallableExactly($amount)
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->exactly($amount))
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    public function expectCallableOnce()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    public function expectCallableNever()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->never())
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    public function createCallableMock()
+    {
+        return $this
+            ->getMockBuilder('React\\Promise\Stub\CallableStub')
+            ->getMock();
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/bootstrap.php b/assets/php/vendor/react/promise/tests/bootstrap.php
new file mode 100644
index 0000000..9b7f872
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/bootstrap.php
@@ -0,0 +1,7 @@
+<?php
+
+$loader = @include __DIR__.'/../vendor/autoload.php';
+if (!$loader) {
+    $loader = require __DIR__.'/../../../../vendor/autoload.php';
+}
+$loader->addPsr4('React\\Promise\\', __DIR__);
diff --git a/assets/php/vendor/react/promise/tests/fixtures/SimpleFulfilledTestPromise.php b/assets/php/vendor/react/promise/tests/fixtures/SimpleFulfilledTestPromise.php
new file mode 100644
index 0000000..ef4d530
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/fixtures/SimpleFulfilledTestPromise.php
@@ -0,0 +1,21 @@
+<?php
+
+namespace React\Promise;
+
+class SimpleFulfilledTestPromise implements PromiseInterface
+{
+    public function then(callable $onFulfilled = null, callable $onRejected = null, callable $onProgress = null)
+    {
+        try {
+            if ($onFulfilled) {
+                $onFulfilled('foo');
+            }
+
+            return new self();
+        } catch (\Throwable $exception) {
+            return new RejectedPromise($exception);
+        } catch (\Exception $exception) {
+            return new RejectedPromise($exception);
+        }
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/fixtures/SimpleFulfilledTestThenable.php b/assets/php/vendor/react/promise/tests/fixtures/SimpleFulfilledTestThenable.php
new file mode 100644
index 0000000..3f66f63
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/fixtures/SimpleFulfilledTestThenable.php
@@ -0,0 +1,21 @@
+<?php
+
+namespace React\Promise;
+
+class SimpleFulfilledTestThenable
+{
+    public function then(callable $onFulfilled = null, callable $onRejected = null, callable $onProgress = null)
+    {
+        try {
+            if ($onFulfilled) {
+                $onFulfilled('foo');
+            }
+
+            return new self();
+        } catch (\Throwable $exception) {
+            return new RejectedPromise($exception);
+        } catch (\Exception $exception) {
+            return new RejectedPromise($exception);
+        }
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/fixtures/SimpleRejectedTestPromise.php b/assets/php/vendor/react/promise/tests/fixtures/SimpleRejectedTestPromise.php
new file mode 100644
index 0000000..b30a226
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/fixtures/SimpleRejectedTestPromise.php
@@ -0,0 +1,21 @@
+<?php
+
+namespace React\Promise;
+
+class SimpleRejectedTestPromise implements PromiseInterface
+{
+    public function then(callable $onFulfilled = null, callable $onRejected = null, callable $onProgress = null)
+    {
+        try {
+            if ($onRejected) {
+                $onRejected('foo');
+            }
+
+            return new self();
+        } catch (\Throwable $exception) {
+            return new RejectedPromise($exception);
+        } catch (\Exception $exception) {
+            return new RejectedPromise($exception);
+        }
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/fixtures/SimpleTestCancellable.php b/assets/php/vendor/react/promise/tests/fixtures/SimpleTestCancellable.php
new file mode 100644
index 0000000..f232a68
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/fixtures/SimpleTestCancellable.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace React\Promise;
+
+class SimpleTestCancellable
+{
+    public $cancelCalled = false;
+
+    public function cancel()
+    {
+        $this->cancelCalled = true;
+    }
+}
diff --git a/assets/php/vendor/react/promise/tests/fixtures/SimpleTestCancellableThenable.php b/assets/php/vendor/react/promise/tests/fixtures/SimpleTestCancellableThenable.php
new file mode 100644
index 0000000..c0f1593
--- /dev/null
+++ b/assets/php/vendor/react/promise/tests/fixtures/SimpleTestCancellableThenable.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace React\Promise;
+
+class SimpleTestCancellableThenable
+{
+    public $cancelCalled = false;
+
+    public function then(callable $onFulfilled = null, callable $onRejected = null, callable $onProgress = null)
+    {
+        return new self();
+    }
+
+    public function cancel()
+    {
+        $this->cancelCalled = true;
+    }
+}
diff --git a/assets/php/vendor/react/socket/.gitignore b/assets/php/vendor/react/socket/.gitignore
new file mode 100644
index 0000000..987e2a2
--- /dev/null
+++ b/assets/php/vendor/react/socket/.gitignore
@@ -0,0 +1,2 @@
+composer.lock
+vendor
diff --git a/assets/php/vendor/react/socket/.travis.yml b/assets/php/vendor/react/socket/.travis.yml
new file mode 100644
index 0000000..917dc0c
--- /dev/null
+++ b/assets/php/vendor/react/socket/.travis.yml
@@ -0,0 +1,49 @@
+language: php
+
+php:
+# - 5.3 # requires old distro, see below
+  - 5.4
+  - 5.5
+  - 5.6
+  - 7.0
+  - 7.1
+  - 7.2
+# - 7.0 # Mac OS X, ignore errors, see below
+  - hhvm # ignore errors, see below
+
+# lock distro so new future defaults will not break the build
+dist: trusty
+
+matrix:
+  include:
+    - php: 5.3
+      dist: precise
+  include:
+    - os: osx
+      language: generic
+      php: 7.0 # just to look right on travis
+      env:
+        - PACKAGE: php70
+  allow_failures:
+    - php: hhvm
+    - os: osx
+
+sudo: false
+
+install:
+  # OSX install inspired by https://github.com/kiler129/TravisCI-OSX-PHP
+  - |
+    if [[ "${TRAVIS_OS_NAME}" == "osx" ]]; then 
+      brew tap homebrew/homebrew-php 
+      echo "Installing PHP ..."
+      brew install "${PACKAGE}"
+      brew install "${PACKAGE}"-xdebug
+      brew link "${PACKAGE}"
+      echo "Installing composer ..."
+      curl -s http://getcomposer.org/installer | php
+      mv composer.phar /usr/local/bin/composer
+    fi
+  - composer install --no-interaction
+
+script:
+  - ./vendor/bin/phpunit --coverage-text
diff --git a/assets/php/vendor/react/socket/CHANGELOG.md b/assets/php/vendor/react/socket/CHANGELOG.md
new file mode 100644
index 0000000..03c2eec
--- /dev/null
+++ b/assets/php/vendor/react/socket/CHANGELOG.md
@@ -0,0 +1,451 @@
+# Changelog
+
+## 0.8.10 (2018-02-28)
+
+*   Feature: Update DNS dependency to support loading system default DNS
+    nameserver config on all supported platforms
+    (`/etc/resolv.conf` on Unix/Linux/Mac/Docker/WSL and WMIC on Windows)
+    (#152 by @clue)
+
+    This means that connecting to hosts that are managed by a local DNS server,
+    such as a corporate DNS server or when using Docker containers, will now
+    work as expected across all platforms with no changes required:
+
+    ```php
+    $connector = new Connector($loop);
+    $connector->connect('intranet.example:80')->then(function ($connection) {
+        // …
+    });
+    ```
+
+## 0.8.9 (2018-01-18)
+
+*   Feature: Support explicitly choosing TLS version to negotiate with remote side
+    by respecting `crypto_method` context parameter for all classes.
+    (#149 by @clue)
+
+    By default, all connector and server classes support TLSv1.0+ and exclude
+    support for legacy SSLv2/SSLv3. As of PHP 5.6+ you can also explicitly
+    choose the TLS version you want to negotiate with the remote side:
+
+    ```php
+    // new: now supports 'crypto_method` context parameter for all classes
+    $connector = new Connector($loop, array(
+        'tls' => array(
+            'crypto_method' => STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT
+        )
+    ));
+    ```
+
+*   Minor internal clean up to unify class imports
+    (#148 by @clue)
+
+## 0.8.8 (2018-01-06)
+
+*   Improve test suite by adding test group to skip integration tests relying on
+    internet connection and fix minor documentation typo.
+    (#146 by @clue and #145 by @cn007b)
+
+## 0.8.7 (2017-12-24)
+
+*   Fix: Fix closing socket resource before removing from loop
+    (#141 by @clue)
+
+    This fixes the root cause of an uncaught `Exception` that only manifested
+    itself after the recent Stream v0.7.4 component update and only if you're
+    using `ext-event` (`ExtEventLoop`).
+
+*   Improve test suite by testing against PHP 7.2
+    (#140 by @carusogabriel)
+
+## 0.8.6 (2017-11-18)
+
+*   Feature: Add Unix domain socket (UDS) support to `Server` with `unix://` URI scheme
+    and add advanced `UnixServer` class.
+    (#120 by @andig)
+
+    ```php
+    // new: Server now supports "unix://" scheme
+    $server = new Server('unix:///tmp/server.sock', $loop);
+
+    // new: advanced usage
+    $server = new UnixServer('/tmp/server.sock', $loop);
+    ```
+
+*   Restructure examples to ease getting started
+    (#136 by @clue)
+
+*   Improve test suite by adding forward compatibility with PHPUnit 6 and
+    ignore Mac OS X test failures for now until Travis tests work again
+    (#133 by @gabriel-caruso and #134 by @clue)
+
+## 0.8.5 (2017-10-23)
+
+*   Fix: Work around PHP bug with Unix domain socket (UDS) paths for Mac OS X
+    (#123 by @andig)
+
+*   Fix: Fix `SecureServer` to return `null` URI if server socket is already closed
+    (#129 by @clue)
+
+*   Improve test suite by adding forward compatibility with PHPUnit v5 and
+    forward compatibility with upcoming EventLoop releases in tests and
+    test Mac OS X on Travis
+    (#122 by @andig and #125, #127 and #130 by @clue)
+
+*   Readme improvements
+    (#118 by @jsor)
+
+## 0.8.4 (2017-09-16)
+
+*   Feature: Add `FixedUriConnector` decorator to use fixed, preconfigured URI instead
+    (#117 by @clue)
+
+    This can be useful for consumers that do not support certain URIs, such as
+    when you want to explicitly connect to a Unix domain socket (UDS) path
+    instead of connecting to a default address assumed by an higher-level API:
+
+    ```php
+    $connector = new FixedUriConnector(
+        'unix:///var/run/docker.sock',
+        new UnixConnector($loop)
+    );
+
+    // destination will be ignored, actually connects to Unix domain socket
+    $promise = $connector->connect('localhost:80');
+    ```
+
+## 0.8.3 (2017-09-08)
+
+*   Feature: Reduce memory consumption for failed connections
+    (#113 by @valga)
+
+*   Fix: Work around write chunk size for TLS streams for PHP < 7.1.14
+    (#114 by @clue)
+
+## 0.8.2 (2017-08-25)
+
+*   Feature: Update DNS dependency to support hosts file on all platforms
+    (#112 by @clue)
+
+    This means that connecting to hosts such as `localhost` will now work as
+    expected across all platforms with no changes required:
+
+    ```php
+    $connector = new Connector($loop);
+    $connector->connect('localhost:8080')->then(function ($connection) {
+        // …
+    });
+    ```
+
+## 0.8.1 (2017-08-15)
+
+* Feature: Forward compatibility with upcoming EventLoop v1.0 and v0.5 and
+  target evenement 3.0 a long side 2.0 and 1.0
+  (#104 by @clue and #111 by @WyriHaximus)
+
+* Improve test suite by locking Travis distro so new defaults will not break the build and
+  fix HHVM build for now again and ignore future HHVM build errors
+  (#109 and #110 by @clue)
+
+* Minor documentation fixes
+  (#103 by @christiaan and #108 by @hansott)
+
+## 0.8.0 (2017-05-09)
+
+* Feature: New `Server` class now acts as a facade for existing server classes
+  and renamed old `Server` to `TcpServer` for advanced usage.
+  (#96 and #97 by @clue)
+
+  The `Server` class is now the main class in this package that implements the
+  `ServerInterface` and allows you to accept incoming streaming connections,
+  such as plaintext TCP/IP or secure TLS connection streams.
+
+  > This is not a BC break and consumer code does not have to be updated.
+
+* Feature / BC break: All addresses are now URIs that include the URI scheme
+  (#98 by @clue)
+
+  ```diff
+  - $parts = parse_url('tcp://' . $conn->getRemoteAddress());
+  + $parts = parse_url($conn->getRemoteAddress());
+  ```
+
+* Fix: Fix `unix://` addresses for Unix domain socket (UDS) paths
+  (#100 by @clue)
+
+* Feature: Forward compatibility with Stream v1.0 and v0.7
+  (#99 by @clue)
+
+## 0.7.2 (2017-04-24)
+
+* Fix: Work around latest PHP 7.0.18 and 7.1.4 no longer accepting full URIs
+  (#94 by @clue)
+
+## 0.7.1 (2017-04-10)
+
+* Fix: Ignore HHVM errors when closing connection that is already closing
+  (#91 by @clue)
+
+## 0.7.0 (2017-04-10)
+
+* Feature: Merge SocketClient component into this component
+  (#87 by @clue)
+
+  This means that this package now provides async, streaming plaintext TCP/IP
+  and secure TLS socket server and client connections for ReactPHP.
+
+  ```
+  $connector = new React\Socket\Connector($loop);
+  $connector->connect('google.com:80')->then(function (ConnectionInterface $conn) {
+      $connection->write('…');
+  });
+  ```
+
+  Accordingly, the `ConnectionInterface` is now used to represent both incoming
+  server side connections as well as outgoing client side connections.
+
+  If you've previously used the SocketClient component to establish outgoing
+  client connections, upgrading should take no longer than a few minutes.
+  All classes have been merged as-is from the latest `v0.7.0` release with no
+  other changes, so you can simply update your code to use the updated namespace
+  like this:
+
+  ```php
+  // old from SocketClient component and namespace
+  $connector = new React\SocketClient\Connector($loop);
+  $connector->connect('google.com:80')->then(function (ConnectionInterface $conn) {
+      $connection->write('…');
+  });
+
+  // new
+  $connector = new React\Socket\Connector($loop);
+  $connector->connect('google.com:80')->then(function (ConnectionInterface $conn) {
+      $connection->write('…');
+  });
+  ```
+
+## 0.6.0 (2017-04-04)
+
+* Feature: Add `LimitingServer` to limit and keep track of open connections
+  (#86 by @clue)
+
+  ```php
+  $server = new Server(0, $loop);
+  $server = new LimitingServer($server, 100);
+
+  $server->on('connection', function (ConnectionInterface $connection) {
+      $connection->write('hello there!' . PHP_EOL);
+      …
+  });
+  ```
+
+* Feature / BC break: Add `pause()` and `resume()` methods to limit active
+  connections
+  (#84 by @clue)
+
+  ```php
+  $server = new Server(0, $loop);
+  $server->pause();
+
+  $loop->addTimer(1.0, function() use ($server) {
+      $server->resume();
+  });
+  ```
+
+## 0.5.1 (2017-03-09)
+
+* Feature: Forward compatibility with Stream v0.5 and upcoming v0.6
+  (#79 by @clue)
+
+## 0.5.0 (2017-02-14)
+
+* Feature / BC break: Replace `listen()` call with URIs passed to constructor
+  and reject listening on hostnames with `InvalidArgumentException`
+  and replace `ConnectionException` with `RuntimeException` for consistency
+  (#61, #66 and #72 by @clue)
+
+  ```php
+  // old
+  $server = new Server($loop);
+  $server->listen(8080);
+
+  // new
+  $server = new Server(8080, $loop);
+  ```
+
+  Similarly, you can now pass a full listening URI to the constructor to change
+  the listening host:
+
+  ```php
+  // old
+  $server = new Server($loop);
+  $server->listen(8080, '127.0.0.1');
+
+  // new
+  $server = new Server('127.0.0.1:8080', $loop);
+  ```
+
+  Trying to start listening on (DNS) host names will now throw an
+  `InvalidArgumentException`, use IP addresses instead:
+
+  ```php
+  // old
+  $server = new Server($loop);
+  $server->listen(8080, 'localhost');
+
+  // new
+  $server = new Server('127.0.0.1:8080', $loop);
+  ```
+
+  If trying to listen fails (such as if port is already in use or port below
+  1024 may require root access etc.), it will now throw a `RuntimeException`,
+  the `ConnectionException` class has been removed:
+
+  ```php
+  // old: throws React\Socket\ConnectionException
+  $server = new Server($loop);
+  $server->listen(80);
+
+  // new: throws RuntimeException
+  $server = new Server(80, $loop);
+  ```
+
+* Feature / BC break: Rename `shutdown()` to `close()` for consistency throughout React
+  (#62 by @clue)
+
+  ```php
+  // old
+  $server->shutdown();
+
+  // new
+  $server->close();
+  ```
+
+* Feature / BC break: Replace `getPort()` with `getAddress()`
+  (#67 by @clue)
+
+  ```php
+  // old
+  echo $server->getPort(); // 8080
+
+  // new
+  echo $server->getAddress(); // 127.0.0.1:8080
+  ```
+
+* Feature / BC break: `getRemoteAddress()` returns full address instead of only IP
+  (#65 by @clue)
+
+  ```php
+  // old
+  echo $connection->getRemoteAddress(); // 192.168.0.1
+
+  // new
+  echo $connection->getRemoteAddress(); // 192.168.0.1:51743
+  ```
+  
+* Feature / BC break: Add `getLocalAddress()` method
+  (#68 by @clue)
+
+  ```php
+  echo $connection->getLocalAddress(); // 127.0.0.1:8080
+  ```
+
+* BC break: The `Server` and `SecureServer` class are now marked `final`
+  and you can no longer `extend` them
+  (which was never documented or recommended anyway).
+  Public properties and event handlers are now internal only.
+  Please use composition instead of extension.
+  (#71, #70 and #69 by @clue)
+
+## 0.4.6 (2017-01-26)
+
+* Feature: Support socket context options passed to `Server`
+  (#64 by @clue)
+
+* Fix: Properly return `null` for unknown addresses
+  (#63 by @clue)
+
+* Improve documentation for `ServerInterface` and lock test suite requirements
+  (#60 by @clue, #57 by @shaunbramley)
+
+## 0.4.5 (2017-01-08)
+
+* Feature: Add `SecureServer` for secure TLS connections
+  (#55 by @clue)
+
+* Add functional integration tests
+  (#54 by @clue)
+
+## 0.4.4 (2016-12-19)
+
+* Feature / Fix: `ConnectionInterface` should extend `DuplexStreamInterface` + documentation
+  (#50 by @clue)
+
+* Feature / Fix: Improve test suite and switch to normal stream handler
+  (#51 by @clue)
+
+* Feature: Add examples
+  (#49 by @clue)
+
+## 0.4.3 (2016-03-01)
+
+* Bug fix: Suppress errors on stream_socket_accept to prevent PHP from crashing
+* Support for PHP7 and HHVM
+* Support PHP 5.3 again
+
+## 0.4.2 (2014-05-25)
+
+* Verify stream is a valid resource in Connection
+
+## 0.4.1 (2014-04-13)
+
+* Bug fix: Check read buffer for data before shutdown signal and end emit (@ArtyDev)
+* Bug fix: v0.3.4 changes merged for v0.4.1
+
+## 0.3.4 (2014-03-30)
+
+* Bug fix: Reset socket to non-blocking after shutting down (PHP bug)
+
+## 0.4.0 (2014-02-02)
+
+* BC break: Bump minimum PHP version to PHP 5.4, remove 5.3 specific hacks
+* BC break: Update to React/Promise 2.0
+* BC break: Update to Evenement 2.0
+* Dependency: Autoloading and filesystem structure now PSR-4 instead of PSR-0
+* Bump React dependencies to v0.4
+
+## 0.3.3 (2013-07-08)
+
+* Version bump
+
+## 0.3.2 (2013-05-10)
+
+* Version bump
+
+## 0.3.1 (2013-04-21)
+
+* Feature: Support binding to IPv6 addresses (@clue)
+
+## 0.3.0 (2013-04-14)
+
+* Bump React dependencies to v0.3
+
+## 0.2.6 (2012-12-26)
+
+* Version bump
+
+## 0.2.3 (2012-11-14)
+
+* Version bump
+
+## 0.2.0 (2012-09-10)
+
+* Bump React dependencies to v0.2
+
+## 0.1.1 (2012-07-12)
+
+* Version bump
+
+## 0.1.0 (2012-07-11)
+
+* First tagged release
diff --git a/assets/php/vendor/react/socket/LICENSE b/assets/php/vendor/react/socket/LICENSE
new file mode 100644
index 0000000..a808108
--- /dev/null
+++ b/assets/php/vendor/react/socket/LICENSE
@@ -0,0 +1,19 @@
+Copyright (c) 2012 Igor Wiedler, Chris Boden
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/assets/php/vendor/react/socket/README.md b/assets/php/vendor/react/socket/README.md
new file mode 100644
index 0000000..e8b53a0
--- /dev/null
+++ b/assets/php/vendor/react/socket/README.md
@@ -0,0 +1,1419 @@
+# Socket
+
+[![Build Status](https://travis-ci.org/reactphp/socket.svg?branch=master)](https://travis-ci.org/reactphp/socket)
+
+Async, streaming plaintext TCP/IP and secure TLS socket server and client
+connections for [ReactPHP](https://reactphp.org/).
+
+The socket library provides re-usable interfaces for a socket-layer
+server and client based on the [`EventLoop`](https://github.com/reactphp/event-loop)
+and [`Stream`](https://github.com/reactphp/stream) components.
+Its server component allows you to build networking servers that accept incoming
+connections from networking clients (such as an HTTP server).
+Its client component allows you to build networking clients that establish
+outgoing connections to networking servers (such as an HTTP or database client).
+This library provides async, streaming means for all of this, so you can
+handle multiple concurrent connections without blocking.
+
+**Table of Contents**
+
+* [Quickstart example](#quickstart-example)
+* [Connection usage](#connection-usage)
+  * [ConnectionInterface](#connectioninterface)
+    * [getRemoteAddress()](#getremoteaddress)
+    * [getLocalAddress()](#getlocaladdress)
+* [Server usage](#server-usage)
+  * [ServerInterface](#serverinterface)
+    * [connection event](#connection-event)
+    * [error event](#error-event)
+    * [getAddress()](#getaddress)
+    * [pause()](#pause)
+    * [resume()](#resume)
+    * [close()](#close)
+  * [Server](#server)
+  * [Advanced server usage](#advanced-server-usage)
+    * [TcpServer](#tcpserver)
+    * [SecureServer](#secureserver)
+    * [UnixServer](#unixserver)
+    * [LimitingServer](#limitingserver)
+      * [getConnections()](#getconnections)
+* [Client usage](#client-usage)
+  * [ConnectorInterface](#connectorinterface)
+    * [connect()](#connect)
+  * [Connector](#connector)
+  * [Advanced client usage](#advanced-client-usage)
+    * [TcpConnector](#tcpconnector)
+    * [DnsConnector](#dnsconnector)
+    * [SecureConnector](#secureconnector)
+    * [TimeoutConnector](#timeoutconnector)
+    * [UnixConnector](#unixconnector)
+    * [FixUriConnector](#fixeduriconnector)
+* [Install](#install)
+* [Tests](#tests)
+* [License](#license)
+
+## Quickstart example
+
+Here is a server that closes the connection if you send it anything:
+
+```php
+$loop = React\EventLoop\Factory::create();
+$socket = new React\Socket\Server('127.0.0.1:8080', $loop);
+
+$socket->on('connection', function (ConnectionInterface $conn) {
+    $conn->write("Hello " . $conn->getRemoteAddress() . "!\n");
+    $conn->write("Welcome to this amazing server!\n");
+    $conn->write("Here's a tip: don't say anything.\n");
+
+    $conn->on('data', function ($data) use ($conn) {
+        $conn->close();
+    });
+});
+
+$loop->run();
+```
+
+See also the [examples](examples).
+
+Here's a client that outputs the output of said server and then attempts to
+send it a string:
+
+```php
+$loop = React\EventLoop\Factory::create();
+$connector = new React\Socket\Connector($loop);
+
+$connector->connect('127.0.0.1:8080')->then(function (ConnectionInterface $conn) use ($loop) {
+    $conn->pipe(new React\Stream\WritableResourceStream(STDOUT, $loop));
+    $conn->write("Hello World!\n");
+});
+
+$loop->run();
+```
+
+## Connection usage
+
+### ConnectionInterface
+
+The `ConnectionInterface` is used to represent any incoming and outgoing
+connection, such as a normal TCP/IP connection.
+
+An incoming or outgoing connection is a duplex stream (both readable and
+writable) that implements React's
+[`DuplexStreamInterface`](https://github.com/reactphp/stream#duplexstreaminterface).
+It contains additional properties for the local and remote address (client IP)
+where this connection has been established to/from.
+
+Most commonly, instances implementing this `ConnectionInterface` are emitted
+by all classes implementing the [`ServerInterface`](#serverinterface) and
+used by all classes implementing the [`ConnectorInterface`](#connectorinterface).
+
+Because the `ConnectionInterface` implements the underlying
+[`DuplexStreamInterface`](https://github.com/reactphp/stream#duplexstreaminterface)
+you can use any of its events and methods as usual:
+
+```php
+$connection->on('data', function ($chunk) {
+    echo $chunk;
+});
+
+$connection->on('end', function () {
+    echo 'ended';
+});
+
+$connection->on('error', function (Exception $e) {
+    echo 'error: ' . $e->getMessage();
+});
+
+$connection->on('close', function () {
+    echo 'closed';
+});
+
+$connection->write($data);
+$connection->end($data = null);
+$connection->close();
+// …
+```
+
+For more details, see the
+[`DuplexStreamInterface`](https://github.com/reactphp/stream#duplexstreaminterface).
+
+#### getRemoteAddress()
+
+The `getRemoteAddress(): ?string` method returns the full remote address
+(URI) where this connection has been established with.
+
+```php
+$address = $connection->getRemoteAddress();
+echo 'Connection with ' . $address . PHP_EOL;
+```
+
+If the remote address can not be determined or is unknown at this time (such as
+after the connection has been closed), it MAY return a `NULL` value instead.
+
+Otherwise, it will return the full address (URI) as a string value, such
+as `tcp://127.0.0.1:8080`, `tcp://[::1]:80`, `tls://127.0.0.1:443`,
+`unix://example.sock` or `unix:///path/to/example.sock`.
+Note that individual URI components are application specific and depend
+on the underlying transport protocol.
+
+If this is a TCP/IP based connection and you only want the remote IP, you may
+use something like this:
+
+```php
+$address = $connection->getRemoteAddress();
+$ip = trim(parse_url($address, PHP_URL_HOST), '[]');
+echo 'Connection with ' . $ip . PHP_EOL;
+```
+
+#### getLocalAddress()
+
+The `getLocalAddress(): ?string` method returns the full local address
+(URI) where this connection has been established with.
+
+```php
+$address = $connection->getLocalAddress();
+echo 'Connection with ' . $address . PHP_EOL;
+```
+
+If the local address can not be determined or is unknown at this time (such as
+after the connection has been closed), it MAY return a `NULL` value instead.
+
+Otherwise, it will return the full address (URI) as a string value, such
+as `tcp://127.0.0.1:8080`, `tcp://[::1]:80`, `tls://127.0.0.1:443`,
+`unix://example.sock` or `unix:///path/to/example.sock`.
+Note that individual URI components are application specific and depend
+on the underlying transport protocol.
+
+This method complements the [`getRemoteAddress()`](#getremoteaddress) method,
+so they should not be confused.
+
+If your `TcpServer` instance is listening on multiple interfaces (e.g. using
+the address `0.0.0.0`), you can use this method to find out which interface
+actually accepted this connection (such as a public or local interface).
+
+If your system has multiple interfaces (e.g. a WAN and a LAN interface),
+you can use this method to find out which interface was actually
+used for this connection.
+
+## Server usage
+
+### ServerInterface
+
+The `ServerInterface` is responsible for providing an interface for accepting
+incoming streaming connections, such as a normal TCP/IP connection.
+
+Most higher-level components (such as a HTTP server) accept an instance
+implementing this interface to accept incoming streaming connections.
+This is usually done via dependency injection, so it's fairly simple to actually
+swap this implementation against any other implementation of this interface.
+This means that you SHOULD typehint against this interface instead of a concrete
+implementation of this interface.
+
+Besides defining a few methods, this interface also implements the
+[`EventEmitterInterface`](https://github.com/igorw/evenement)
+which allows you to react to certain events.
+
+#### connection event
+
+The `connection` event will be emitted whenever a new connection has been
+established, i.e. a new client connects to this server socket:
+
+```php
+$server->on('connection', function (ConnectionInterface $connection) {
+    echo 'new connection' . PHP_EOL;
+});
+```
+
+See also the [`ConnectionInterface`](#connectioninterface) for more details
+about handling the incoming connection.
+
+#### error event
+
+The `error` event will be emitted whenever there's an error accepting a new
+connection from a client.
+
+```php
+$server->on('error', function (Exception $e) {
+    echo 'error: ' . $e->getMessage() . PHP_EOL;
+});
+```
+
+Note that this is not a fatal error event, i.e. the server keeps listening for
+new connections even after this event.
+
+
+#### getAddress()
+
+The `getAddress(): ?string` method can be used to
+return the full address (URI) this server is currently listening on.
+
+```php
+$address = $server->getAddress();
+echo 'Server listening on ' . $address . PHP_EOL;
+```
+
+If the address can not be determined or is unknown at this time (such as
+after the socket has been closed), it MAY return a `NULL` value instead.
+
+Otherwise, it will return the full address (URI) as a string value, such
+as `tcp://127.0.0.1:8080`, `tcp://[::1]:80`, `tls://127.0.0.1:443`
+`unix://example.sock` or `unix:///path/to/example.sock`.
+Note that individual URI components are application specific and depend
+on the underlying transport protocol.
+
+If this is a TCP/IP based server and you only want the local port, you may
+use something like this:
+
+```php
+$address = $server->getAddress();
+$port = parse_url($address, PHP_URL_PORT);
+echo 'Server listening on port ' . $port . PHP_EOL;
+```
+
+#### pause()
+
+The `pause(): void` method can be used to
+pause accepting new incoming connections.
+
+Removes the socket resource from the EventLoop and thus stop accepting
+new connections. Note that the listening socket stays active and is not
+closed.
+
+This means that new incoming connections will stay pending in the
+operating system backlog until its configurable backlog is filled.
+Once the backlog is filled, the operating system may reject further
+incoming connections until the backlog is drained again by resuming
+to accept new connections.
+
+Once the server is paused, no futher `connection` events SHOULD
+be emitted.
+
+```php
+$server->pause();
+
+$server->on('connection', assertShouldNeverCalled());
+```
+
+This method is advisory-only, though generally not recommended, the
+server MAY continue emitting `connection` events.
+
+Unless otherwise noted, a successfully opened server SHOULD NOT start
+in paused state.
+
+You can continue processing events by calling `resume()` again.
+
+Note that both methods can be called any number of times, in particular
+calling `pause()` more than once SHOULD NOT have any effect.
+Similarly, calling this after `close()` is a NO-OP.
+
+#### resume()
+
+The `resume(): void` method can be used to
+resume accepting new incoming connections.
+
+Re-attach the socket resource to the EventLoop after a previous `pause()`.
+
+```php
+$server->pause();
+
+$loop->addTimer(1.0, function () use ($server) {
+    $server->resume();
+});
+```
+
+Note that both methods can be called any number of times, in particular
+calling `resume()` without a prior `pause()` SHOULD NOT have any effect.
+Similarly, calling this after `close()` is a NO-OP.
+
+#### close()
+
+The `close(): void` method can be used to
+shut down this listening socket.
+
+This will stop listening for new incoming connections on this socket.
+
+```php
+echo 'Shutting down server socket' . PHP_EOL;
+$server->close();
+```
+
+Calling this method more than once on the same instance is a NO-OP.
+
+### Server
+
+The `Server` class is the main class in this package that implements the
+[`ServerInterface`](#serverinterface) and allows you to accept incoming
+streaming connections, such as plaintext TCP/IP or secure TLS connection streams.
+Connections can also be accepted on Unix domain sockets.
+
+```php
+$server = new Server(8080, $loop);
+```
+
+As above, the `$uri` parameter can consist of only a port, in which case the
+server will default to listening on the localhost address `127.0.0.1`,
+which means it will not be reachable from outside of this system.
+
+In order to use a random port assignment, you can use the port `0`:
+
+```php
+$server = new Server(0, $loop);
+$address = $server->getAddress();
+```
+
+In order to change the host the socket is listening on, you can provide an IP
+address through the first parameter provided to the constructor, optionally
+preceded by the `tcp://` scheme:
+
+```php
+$server = new Server('192.168.0.1:8080', $loop);
+```
+
+If you want to listen on an IPv6 address, you MUST enclose the host in square
+brackets:
+
+```php
+$server = new Server('[::1]:8080', $loop);
+```
+
+To listen on a Unix domain socket (UDS) path, you MUST prefix the URI with the
+`unix://` scheme:
+
+```php
+$server = new Server('unix:///tmp/server.sock', $loop);
+```
+
+If the given URI is invalid, does not contain a port, any other scheme or if it
+contains a hostname, it will throw an `InvalidArgumentException`:
+
+```php
+// throws InvalidArgumentException due to missing port
+$server = new Server('127.0.0.1', $loop);
+```
+
+If the given URI appears to be valid, but listening on it fails (such as if port
+is already in use or port below 1024 may require root access etc.), it will
+throw a `RuntimeException`:
+
+```php
+$first = new Server(8080, $loop);
+
+// throws RuntimeException because port is already in use
+$second = new Server(8080, $loop);
+```
+
+> Note that these error conditions may vary depending on your system and/or
+  configuration.
+  See the exception message and code for more details about the actual error
+  condition.
+
+Optionally, you can specify [TCP socket context options](http://php.net/manual/en/context.socket.php)
+for the underlying stream socket resource like this:
+
+```php
+$server = new Server('[::1]:8080', $loop, array(
+    'tcp' => array(
+        'backlog' => 200,
+        'so_reuseport' => true,
+        'ipv6_v6only' => true
+    )
+));
+```
+
+> Note that available [socket context options](http://php.net/manual/en/context.socket.php),
+  their defaults and effects of changing these may vary depending on your system
+  and/or PHP version.
+  Passing unknown context options has no effect.
+  For BC reasons, you can also pass the TCP socket context options as a simple
+  array without wrapping this in another array under the `tcp` key.
+
+You can start a secure TLS (formerly known as SSL) server by simply prepending
+the `tls://` URI scheme.
+Internally, it will wait for plaintext TCP/IP connections and then performs a
+TLS handshake for each connection.
+It thus requires valid [TLS context options](http://php.net/manual/en/context.ssl.php),
+which in its most basic form may look something like this if you're using a
+PEM encoded certificate file:
+
+```php
+$server = new Server('tls://127.0.0.1:8080', $loop, array(
+    'tls' => array(
+        'local_cert' => 'server.pem'
+    )
+));
+```
+
+> Note that the certificate file will not be loaded on instantiation but when an
+  incoming connection initializes its TLS context.
+  This implies that any invalid certificate file paths or contents will only cause
+  an `error` event at a later time.
+
+If your private key is encrypted with a passphrase, you have to specify it
+like this:
+
+```php
+$server = new Server('tls://127.0.0.1:8000', $loop, array(
+    'tls' => array(
+        'local_cert' => 'server.pem',
+        'passphrase' => 'secret'
+    )
+));
+```
+
+By default, this server supports TLSv1.0+ and excludes support for legacy
+SSLv2/SSLv3. As of PHP 5.6+ you can also explicitly choose the TLS version you
+want to negotiate with the remote side:
+
+```php
+$server = new Server('tls://127.0.0.1:8000', $loop, array(
+    'tls' => array(
+        'local_cert' => 'server.pem',
+        'crypto_method' => STREAM_CRYPTO_METHOD_TLSv1_2_SERVER
+    )
+));
+```
+
+> Note that available [TLS context options](http://php.net/manual/en/context.ssl.php),
+  their defaults and effects of changing these may vary depending on your system
+  and/or PHP version.
+  The outer context array allows you to also use `tcp` (and possibly more)
+  context options at the same time.
+  Passing unknown context options has no effect.
+  If you do not use the `tls://` scheme, then passing `tls` context options
+  has no effect.
+
+Whenever a client connects, it will emit a `connection` event with a connection
+instance implementing [`ConnectionInterface`](#connectioninterface):
+
+```php
+$server->on('connection', function (ConnectionInterface $connection) {
+    echo 'Plaintext connection from ' . $connection->getRemoteAddress() . PHP_EOL;
+    
+    $connection->write('hello there!' . PHP_EOL);
+    …
+});
+```
+
+See also the [`ServerInterface`](#serverinterface) for more details.
+
+> Note that the `Server` class is a concrete implementation for TCP/IP sockets.
+  If you want to typehint in your higher-level protocol implementation, you SHOULD
+  use the generic [`ServerInterface`](#serverinterface) instead.
+
+### Advanced server usage
+
+#### TcpServer
+
+The `TcpServer` class implements the [`ServerInterface`](#serverinterface) and
+is responsible for accepting plaintext TCP/IP connections.
+
+```php
+$server = new TcpServer(8080, $loop);
+```
+
+As above, the `$uri` parameter can consist of only a port, in which case the
+server will default to listening on the localhost address `127.0.0.1`,
+which means it will not be reachable from outside of this system.
+
+In order to use a random port assignment, you can use the port `0`:
+
+```php
+$server = new TcpServer(0, $loop);
+$address = $server->getAddress();
+```
+
+In order to change the host the socket is listening on, you can provide an IP
+address through the first parameter provided to the constructor, optionally
+preceded by the `tcp://` scheme:
+
+```php
+$server = new TcpServer('192.168.0.1:8080', $loop);
+```
+
+If you want to listen on an IPv6 address, you MUST enclose the host in square
+brackets:
+
+```php
+$server = new TcpServer('[::1]:8080', $loop);
+```
+
+If the given URI is invalid, does not contain a port, any other scheme or if it
+contains a hostname, it will throw an `InvalidArgumentException`:
+
+```php
+// throws InvalidArgumentException due to missing port
+$server = new TcpServer('127.0.0.1', $loop);
+```
+
+If the given URI appears to be valid, but listening on it fails (such as if port
+is already in use or port below 1024 may require root access etc.), it will
+throw a `RuntimeException`:
+
+```php
+$first = new TcpServer(8080, $loop);
+
+// throws RuntimeException because port is already in use
+$second = new TcpServer(8080, $loop);
+```
+
+> Note that these error conditions may vary depending on your system and/or
+configuration.
+See the exception message and code for more details about the actual error
+condition.
+
+Optionally, you can specify [socket context options](http://php.net/manual/en/context.socket.php)
+for the underlying stream socket resource like this:
+
+```php
+$server = new TcpServer('[::1]:8080', $loop, array(
+    'backlog' => 200,
+    'so_reuseport' => true,
+    'ipv6_v6only' => true
+));
+```
+
+> Note that available [socket context options](http://php.net/manual/en/context.socket.php),
+their defaults and effects of changing these may vary depending on your system
+and/or PHP version.
+Passing unknown context options has no effect.
+
+Whenever a client connects, it will emit a `connection` event with a connection
+instance implementing [`ConnectionInterface`](#connectioninterface):
+
+```php
+$server->on('connection', function (ConnectionInterface $connection) {
+    echo 'Plaintext connection from ' . $connection->getRemoteAddress() . PHP_EOL;
+    
+    $connection->write('hello there!' . PHP_EOL);
+    …
+});
+```
+
+See also the [`ServerInterface`](#serverinterface) for more details.
+
+#### SecureServer
+
+The `SecureServer` class implements the [`ServerInterface`](#serverinterface)
+and is responsible for providing a secure TLS (formerly known as SSL) server.
+
+It does so by wrapping a [`TcpServer`](#tcpserver) instance which waits for plaintext
+TCP/IP connections and then performs a TLS handshake for each connection.
+It thus requires valid [TLS context options](http://php.net/manual/en/context.ssl.php),
+which in its most basic form may look something like this if you're using a
+PEM encoded certificate file:
+
+```php
+$server = new TcpServer(8000, $loop);
+$server = new SecureServer($server, $loop, array(
+    'local_cert' => 'server.pem'
+));
+```
+
+> Note that the certificate file will not be loaded on instantiation but when an
+incoming connection initializes its TLS context.
+This implies that any invalid certificate file paths or contents will only cause
+an `error` event at a later time.
+
+If your private key is encrypted with a passphrase, you have to specify it
+like this:
+
+```php
+$server = new TcpServer(8000, $loop);
+$server = new SecureServer($server, $loop, array(
+    'local_cert' => 'server.pem',
+    'passphrase' => 'secret'
+));
+```
+
+By default, this server supports TLSv1.0+ and excludes support for legacy
+SSLv2/SSLv3. As of PHP 5.6+ you can also explicitly choose the TLS version you
+want to negotiate with the remote side:
+
+```php
+$server = new TcpServer(8000, $loop);
+$server = new SecureServer($server, $loop, array(
+    'local_cert' => 'server.pem',
+    'crypto_method' => STREAM_CRYPTO_METHOD_TLSv1_2_SERVER
+));
+```
+
+> Note that available [TLS context options](http://php.net/manual/en/context.ssl.php),
+their defaults and effects of changing these may vary depending on your system
+and/or PHP version.
+Passing unknown context options has no effect.
+
+Whenever a client completes the TLS handshake, it will emit a `connection` event
+with a connection instance implementing [`ConnectionInterface`](#connectioninterface):
+
+```php
+$server->on('connection', function (ConnectionInterface $connection) {
+    echo 'Secure connection from' . $connection->getRemoteAddress() . PHP_EOL;
+    
+    $connection->write('hello there!' . PHP_EOL);
+    …
+});
+```
+
+Whenever a client fails to perform a successful TLS handshake, it will emit an
+`error` event and then close the underlying TCP/IP connection:
+
+```php
+$server->on('error', function (Exception $e) {
+    echo 'Error' . $e->getMessage() . PHP_EOL;
+});
+```
+
+See also the [`ServerInterface`](#serverinterface) for more details.
+
+Note that the `SecureServer` class is a concrete implementation for TLS sockets.
+If you want to typehint in your higher-level protocol implementation, you SHOULD
+use the generic [`ServerInterface`](#serverinterface) instead.
+
+> Advanced usage: Despite allowing any `ServerInterface` as first parameter,
+you SHOULD pass a `TcpServer` instance as first parameter, unless you
+know what you're doing.
+Internally, the `SecureServer` has to set the required TLS context options on
+the underlying stream resources.
+These resources are not exposed through any of the interfaces defined in this
+package, but only through the internal `Connection` class.
+The `TcpServer` class is guaranteed to emit connections that implement
+the `ConnectionInterface` and uses the internal `Connection` class in order to
+expose these underlying resources.
+If you use a custom `ServerInterface` and its `connection` event does not
+meet this requirement, the `SecureServer` will emit an `error` event and
+then close the underlying connection.
+
+#### UnixServer
+
+The `UnixServer` class implements the [`ServerInterface`](#serverinterface) and
+is responsible for accepting connections on Unix domain sockets (UDS).
+
+```php
+$server = new UnixServer('/tmp/server.sock', $loop);
+```
+
+As above, the `$uri` parameter can consist of only a socket path or socket path
+prefixed by the `unix://` scheme.
+
+If the given URI appears to be valid, but listening on it fails (such as if the
+socket is already in use or the file not accessible etc.), it will throw a
+`RuntimeException`:
+
+```php
+$first = new UnixServer('/tmp/same.sock', $loop);
+
+// throws RuntimeException because socket is already in use
+$second = new UnixServer('/tmp/same.sock', $loop);
+```
+
+Whenever a client connects, it will emit a `connection` event with a connection
+instance implementing [`ConnectionInterface`](#connectioninterface):
+
+```php
+$server->on('connection', function (ConnectionInterface $connection) {
+    echo 'New connection' . PHP_EOL;
+
+    $connection->write('hello there!' . PHP_EOL);
+    …
+});
+```
+
+See also the [`ServerInterface`](#serverinterface) for more details.
+
+#### LimitingServer
+
+The `LimitingServer` decorator wraps a given `ServerInterface` and is responsible
+for limiting and keeping track of open connections to this server instance.
+
+Whenever the underlying server emits a `connection` event, it will check its
+limits and then either
+ - keep track of this connection by adding it to the list of
+   open connections and then forward the `connection` event
+ - or reject (close) the connection when its limits are exceeded and will
+   forward an `error` event instead.
+
+Whenever a connection closes, it will remove this connection from the list of
+open connections.
+
+```php
+$server = new LimitingServer($server, 100);
+$server->on('connection', function (ConnectionInterface $connection) {
+    $connection->write('hello there!' . PHP_EOL);
+    …
+});
+```
+
+See also the [second example](examples) for more details.
+
+You have to pass a maximum number of open connections to ensure
+the server will automatically reject (close) connections once this limit
+is exceeded. In this case, it will emit an `error` event to inform about
+this and no `connection` event will be emitted.
+
+```php
+$server = new LimitingServer($server, 100);
+$server->on('connection', function (ConnectionInterface $connection) {
+    $connection->write('hello there!' . PHP_EOL);
+    …
+});
+```
+
+You MAY pass a `null` limit in order to put no limit on the number of
+open connections and keep accepting new connection until you run out of
+operating system resources (such as open file handles). This may be
+useful if you do not want to take care of applying a limit but still want
+to use the `getConnections()` method.
+
+You can optionally configure the server to pause accepting new
+connections once the connection limit is reached. In this case, it will
+pause the underlying server and no longer process any new connections at
+all, thus also no longer closing any excessive connections.
+The underlying operating system is responsible for keeping a backlog of
+pending connections until its limit is reached, at which point it will
+start rejecting further connections.
+Once the server is below the connection limit, it will continue consuming
+connections from the backlog and will process any outstanding data on
+each connection.
+This mode may be useful for some protocols that are designed to wait for
+a response message (such as HTTP), but may be less useful for other
+protocols that demand immediate responses (such as a "welcome" message in
+an interactive chat).
+
+```php
+$server = new LimitingServer($server, 100, true);
+$server->on('connection', function (ConnectionInterface $connection) {
+    $connection->write('hello there!' . PHP_EOL);
+    …
+});
+```
+
+##### getConnections()
+
+The `getConnections(): ConnectionInterface[]` method can be used to
+return an array with all currently active connections.
+
+```php
+foreach ($server->getConnection() as $connection) {
+    $connection->write('Hi!');
+}
+```
+
+## Client usage
+
+### ConnectorInterface
+
+The `ConnectorInterface` is responsible for providing an interface for
+establishing streaming connections, such as a normal TCP/IP connection.
+
+This is the main interface defined in this package and it is used throughout
+React's vast ecosystem.
+
+Most higher-level components (such as HTTP, database or other networking
+service clients) accept an instance implementing this interface to create their
+TCP/IP connection to the underlying networking service.
+This is usually done via dependency injection, so it's fairly simple to actually
+swap this implementation against any other implementation of this interface.
+
+The interface only offers a single method:
+
+#### connect()
+
+The `connect(string $uri): PromiseInterface<ConnectionInterface, Exception>` method
+can be used to create a streaming connection to the given remote address.
+
+It returns a [Promise](https://github.com/reactphp/promise) which either
+fulfills with a stream implementing [`ConnectionInterface`](#connectioninterface)
+on success or rejects with an `Exception` if the connection is not successful:
+
+```php
+$connector->connect('google.com:443')->then(
+    function (ConnectionInterface $connection) {
+        // connection successfully established
+    },
+    function (Exception $error) {
+        // failed to connect due to $error
+    }
+);
+```
+
+See also [`ConnectionInterface`](#connectioninterface) for more details.
+
+The returned Promise MUST be implemented in such a way that it can be
+cancelled when it is still pending. Cancelling a pending promise MUST
+reject its value with an `Exception`. It SHOULD clean up any underlying
+resources and references as applicable:
+
+```php
+$promise = $connector->connect($uri);
+
+$promise->cancel();
+```
+
+### Connector
+
+The `Connector` class is the main class in this package that implements the
+[`ConnectorInterface`](#connectorinterface) and allows you to create streaming connections.
+
+You can use this connector to create any kind of streaming connections, such
+as plaintext TCP/IP, secure TLS or local Unix connection streams.
+
+It binds to the main event loop and can be used like this:
+
+```php
+$loop = React\EventLoop\Factory::create();
+$connector = new Connector($loop);
+
+$connector->connect($uri)->then(function (ConnectionInterface $connection) {
+    $connection->write('...');
+    $connection->end();
+});
+
+$loop->run();
+```
+
+In order to create a plaintext TCP/IP connection, you can simply pass a host
+and port combination like this:
+
+```php
+$connector->connect('www.google.com:80')->then(function (ConnectionInterface $connection) {
+    $connection->write('...');
+    $connection->end();
+});
+```
+
+> If you do no specify a URI scheme in the destination URI, it will assume
+  `tcp://` as a default and establish a plaintext TCP/IP connection.
+  Note that TCP/IP connections require a host and port part in the destination
+  URI like above, all other URI components are optional.
+
+In order to create a secure TLS connection, you can use the `tls://` URI scheme
+like this:
+
+```php
+$connector->connect('tls://www.google.com:443')->then(function (ConnectionInterface $connection) {
+    $connection->write('...');
+    $connection->end();
+});
+```
+
+In order to create a local Unix domain socket connection, you can use the
+`unix://` URI scheme like this:
+
+```php
+$connector->connect('unix:///tmp/demo.sock')->then(function (ConnectionInterface $connection) {
+    $connection->write('...');
+    $connection->end();
+});
+```
+
+> The [`getRemoteAddress()`](#getremoteaddress) method will return the target
+  Unix domain socket (UDS) path as given to the `connect()` method, including
+  the `unix://` scheme, for example `unix:///tmp/demo.sock`.
+  The [`getLocalAddress()`](#getlocaladdress) method will most likely return a
+  `null` value as this value is not applicable to UDS connections here.
+
+Under the hood, the `Connector` is implemented as a *higher-level facade*
+for the lower-level connectors implemented in this package. This means it
+also shares all of their features and implementation details.
+If you want to typehint in your higher-level protocol implementation, you SHOULD
+use the generic [`ConnectorInterface`](#connectorinterface) instead.
+
+The `Connector` class will try to detect your system DNS settings (and uses
+Google's public DNS server `8.8.8.8` as a fallback if unable to determine your
+system settings) to resolve all public hostnames into underlying IP addresses by
+default.
+If you explicitly want to use a custom DNS server (such as a local DNS relay or
+a company wide DNS server), you can set up the `Connector` like this:
+
+```php
+$connector = new Connector($loop, array(
+    'dns' => '127.0.1.1'
+));
+
+$connector->connect('localhost:80')->then(function (ConnectionInterface $connection) {
+    $connection->write('...');
+    $connection->end();
+});
+```
+
+If you do not want to use a DNS resolver at all and want to connect to IP
+addresses only, you can also set up your `Connector` like this:
+
+```php
+$connector = new Connector($loop, array(
+    'dns' => false
+));
+
+$connector->connect('127.0.0.1:80')->then(function (ConnectionInterface $connection) {
+    $connection->write('...');
+    $connection->end();
+});
+```
+
+Advanced: If you need a custom DNS `Resolver` instance, you can also set up
+your `Connector` like this:
+
+```php
+$dnsResolverFactory = new React\Dns\Resolver\Factory();
+$resolver = $dnsResolverFactory->createCached('127.0.1.1', $loop);
+
+$connector = new Connector($loop, array(
+    'dns' => $resolver
+));
+
+$connector->connect('localhost:80')->then(function (ConnectionInterface $connection) {
+    $connection->write('...');
+    $connection->end();
+});
+```
+
+By default, the `tcp://` and `tls://` URI schemes will use timeout value that
+repects your `default_socket_timeout` ini setting (which defaults to 60s).
+If you want a custom timeout value, you can simply pass this like this:
+
+```php
+$connector = new Connector($loop, array(
+    'timeout' => 10.0
+));
+```
+
+Similarly, if you do not want to apply a timeout at all and let the operating
+system handle this, you can pass a boolean flag like this:
+
+```php
+$connector = new Connector($loop, array(
+    'timeout' => false
+));
+```
+
+By default, the `Connector` supports the `tcp://`, `tls://` and `unix://`
+URI schemes. If you want to explicitly prohibit any of these, you can simply
+pass boolean flags like this:
+
+```php
+// only allow secure TLS connections
+$connector = new Connector($loop, array(
+    'tcp' => false,
+    'tls' => true,
+    'unix' => false,
+));
+
+$connector->connect('tls://google.com:443')->then(function (ConnectionInterface $connection) {
+    $connection->write('...');
+    $connection->end();
+});
+```
+
+The `tcp://` and `tls://` also accept additional context options passed to
+the underlying connectors.
+If you want to explicitly pass additional context options, you can simply
+pass arrays of context options like this:
+
+```php
+// allow insecure TLS connections
+$connector = new Connector($loop, array(
+    'tcp' => array(
+        'bindto' => '192.168.0.1:0'
+    ),
+    'tls' => array(
+        'verify_peer' => false,
+        'verify_peer_name' => false
+    ),
+));
+
+$connector->connect('tls://localhost:443')->then(function (ConnectionInterface $connection) {
+    $connection->write('...');
+    $connection->end();
+});
+```
+
+By default, this connector supports TLSv1.0+ and excludes support for legacy
+SSLv2/SSLv3. As of PHP 5.6+ you can also explicitly choose the TLS version you
+want to negotiate with the remote side:
+
+```php
+$connector = new Connector($loop, array(
+    'tls' => array(
+        'crypto_method' => STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT
+    )
+));
+```
+
+> For more details about context options, please refer to the PHP documentation
+  about [socket context options](http://php.net/manual/en/context.socket.php)
+  and [SSL context options](http://php.net/manual/en/context.ssl.php).
+
+Advanced: By default, the `Connector` supports the `tcp://`, `tls://` and
+`unix://` URI schemes.
+For this, it sets up the required connector classes automatically.
+If you want to explicitly pass custom connectors for any of these, you can simply
+pass an instance implementing the `ConnectorInterface` like this:
+
+```php
+$dnsResolverFactory = new React\Dns\Resolver\Factory();
+$resolver = $dnsResolverFactory->createCached('127.0.1.1', $loop);
+$tcp = new DnsConnector(new TcpConnector($loop), $resolver);
+
+$tls = new SecureConnector($tcp, $loop);
+
+$unix = new UnixConnector($loop);
+
+$connector = new Connector($loop, array(
+    'tcp' => $tcp,
+    'tls' => $tls,
+    'unix' => $unix,
+
+    'dns' => false,
+    'timeout' => false,
+));
+
+$connector->connect('google.com:80')->then(function (ConnectionInterface $connection) {
+    $connection->write('...');
+    $connection->end();
+});
+```
+
+> Internally, the `tcp://` connector will always be wrapped by the DNS resolver,
+  unless you disable DNS like in the above example. In this case, the `tcp://`
+  connector receives the actual hostname instead of only the resolved IP address
+  and is thus responsible for performing the lookup.
+  Internally, the automatically created `tls://` connector will always wrap the
+  underlying `tcp://` connector for establishing the underlying plaintext
+  TCP/IP connection before enabling secure TLS mode. If you want to use a custom
+  underlying `tcp://` connector for secure TLS connections only, you may
+  explicitly pass a `tls://` connector like above instead.
+  Internally, the `tcp://` and `tls://` connectors will always be wrapped by
+  `TimeoutConnector`, unless you disable timeouts like in the above example.
+
+### Advanced client usage
+
+#### TcpConnector
+
+The `React\Socket\TcpConnector` class implements the
+[`ConnectorInterface`](#connectorinterface) and allows you to create plaintext
+TCP/IP connections to any IP-port-combination:
+
+```php
+$tcpConnector = new React\Socket\TcpConnector($loop);
+
+$tcpConnector->connect('127.0.0.1:80')->then(function (ConnectionInterface $connection) {
+    $connection->write('...');
+    $connection->end();
+});
+
+$loop->run();
+```
+
+See also the [examples](examples).
+
+Pending connection attempts can be cancelled by cancelling its pending promise like so:
+
+```php
+$promise = $tcpConnector->connect('127.0.0.1:80');
+
+$promise->cancel();
+```
+
+Calling `cancel()` on a pending promise will close the underlying socket
+resource, thus cancelling the pending TCP/IP connection, and reject the
+resulting promise.
+
+You can optionally pass additional
+[socket context options](http://php.net/manual/en/context.socket.php)
+to the constructor like this:
+
+```php
+$tcpConnector = new React\Socket\TcpConnector($loop, array(
+    'bindto' => '192.168.0.1:0'
+));
+```
+
+Note that this class only allows you to connect to IP-port-combinations.
+If the given URI is invalid, does not contain a valid IP address and port
+or contains any other scheme, it will reject with an
+`InvalidArgumentException`:
+
+If the given URI appears to be valid, but connecting to it fails (such as if
+the remote host rejects the connection etc.), it will reject with a
+`RuntimeException`.
+
+If you want to connect to hostname-port-combinations, see also the following chapter.
+
+> Advanced usage: Internally, the `TcpConnector` allocates an empty *context*
+resource for each stream resource.
+If the destination URI contains a `hostname` query parameter, its value will
+be used to set up the TLS peer name.
+This is used by the `SecureConnector` and `DnsConnector` to verify the peer
+name and can also be used if you want a custom TLS peer name.
+
+#### DnsConnector
+
+The `DnsConnector` class implements the
+[`ConnectorInterface`](#connectorinterface) and allows you to create plaintext
+TCP/IP connections to any hostname-port-combination.
+
+It does so by decorating a given `TcpConnector` instance so that it first
+looks up the given domain name via DNS (if applicable) and then establishes the
+underlying TCP/IP connection to the resolved target IP address.
+
+Make sure to set up your DNS resolver and underlying TCP connector like this:
+
+```php
+$dnsResolverFactory = new React\Dns\Resolver\Factory();
+$dns = $dnsResolverFactory->createCached('8.8.8.8', $loop);
+
+$dnsConnector = new React\Socket\DnsConnector($tcpConnector, $dns);
+
+$dnsConnector->connect('www.google.com:80')->then(function (ConnectionInterface $connection) {
+    $connection->write('...');
+    $connection->end();
+});
+
+$loop->run();
+```
+
+See also the [examples](examples).
+
+Pending connection attempts can be cancelled by cancelling its pending promise like so:
+
+```php
+$promise = $dnsConnector->connect('www.google.com:80');
+
+$promise->cancel();
+```
+
+Calling `cancel()` on a pending promise will cancel the underlying DNS lookup
+and/or the underlying TCP/IP connection and reject the resulting promise.
+
+> Advanced usage: Internally, the `DnsConnector` relies on a `Resolver` to
+look up the IP address for the given hostname.
+It will then replace the hostname in the destination URI with this IP and
+append a `hostname` query parameter and pass this updated URI to the underlying
+connector.
+The underlying connector is thus responsible for creating a connection to the
+target IP address, while this query parameter can be used to check the original
+hostname and is used by the `TcpConnector` to set up the TLS peer name.
+If a `hostname` is given explicitly, this query parameter will not be modified,
+which can be useful if you want a custom TLS peer name.
+
+#### SecureConnector
+
+The `SecureConnector` class implements the
+[`ConnectorInterface`](#connectorinterface) and allows you to create secure
+TLS (formerly known as SSL) connections to any hostname-port-combination.
+
+It does so by decorating a given `DnsConnector` instance so that it first
+creates a plaintext TCP/IP connection and then enables TLS encryption on this
+stream.
+
+```php
+$secureConnector = new React\Socket\SecureConnector($dnsConnector, $loop);
+
+$secureConnector->connect('www.google.com:443')->then(function (ConnectionInterface $connection) {
+    $connection->write("GET / HTTP/1.0\r\nHost: www.google.com\r\n\r\n");
+    ...
+});
+
+$loop->run();
+```
+
+See also the [examples](examples).
+
+Pending connection attempts can be cancelled by cancelling its pending promise like so:
+
+```php
+$promise = $secureConnector->connect('www.google.com:443');
+
+$promise->cancel();
+```
+
+Calling `cancel()` on a pending promise will cancel the underlying TCP/IP
+connection and/or the SSL/TLS negotiation and reject the resulting promise.
+
+You can optionally pass additional
+[SSL context options](http://php.net/manual/en/context.ssl.php)
+to the constructor like this:
+
+```php
+$secureConnector = new React\Socket\SecureConnector($dnsConnector, $loop, array(
+    'verify_peer' => false,
+    'verify_peer_name' => false
+));
+```
+
+By default, this connector supports TLSv1.0+ and excludes support for legacy
+SSLv2/SSLv3. As of PHP 5.6+ you can also explicitly choose the TLS version you
+want to negotiate with the remote side:
+
+```php
+$secureConnector = new React\Socket\SecureConnector($dnsConnector, $loop, array(
+    'crypto_method' => STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT
+));
+```
+
+> Advanced usage: Internally, the `SecureConnector` relies on setting up the
+required *context options* on the underlying stream resource.
+It should therefor be used with a `TcpConnector` somewhere in the connector
+stack so that it can allocate an empty *context* resource for each stream
+resource and verify the peer name.
+Failing to do so may result in a TLS peer name mismatch error or some hard to
+trace race conditions, because all stream resources will use a single, shared
+*default context* resource otherwise.
+
+#### TimeoutConnector
+
+The `TimeoutConnector` class implements the
+[`ConnectorInterface`](#connectorinterface) and allows you to add timeout
+handling to any existing connector instance.
+
+It does so by decorating any given [`ConnectorInterface`](#connectorinterface)
+instance and starting a timer that will automatically reject and abort any
+underlying connection attempt if it takes too long.
+
+```php
+$timeoutConnector = new React\Socket\TimeoutConnector($connector, 3.0, $loop);
+
+$timeoutConnector->connect('google.com:80')->then(function (ConnectionInterface $connection) {
+    // connection succeeded within 3.0 seconds
+});
+```
+
+See also any of the [examples](examples).
+
+Pending connection attempts can be cancelled by cancelling its pending promise like so:
+
+```php
+$promise = $timeoutConnector->connect('google.com:80');
+
+$promise->cancel();
+```
+
+Calling `cancel()` on a pending promise will cancel the underlying connection
+attempt, abort the timer and reject the resulting promise.
+
+#### UnixConnector
+
+The `UnixConnector` class implements the
+[`ConnectorInterface`](#connectorinterface) and allows you to connect to
+Unix domain socket (UDS) paths like this:
+
+```php
+$connector = new React\Socket\UnixConnector($loop);
+
+$connector->connect('/tmp/demo.sock')->then(function (ConnectionInterface $connection) {
+    $connection->write("HELLO\n");
+});
+
+$loop->run();
+```
+
+Connecting to Unix domain sockets is an atomic operation, i.e. its promise will
+settle (either resolve or reject) immediately.
+As such, calling `cancel()` on the resulting promise has no effect.
+
+> The [`getRemoteAddress()`](#getremoteaddress) method will return the target
+  Unix domain socket (UDS) path as given to the `connect()` method, prepended
+  with the `unix://` scheme, for example `unix:///tmp/demo.sock`.
+  The [`getLocalAddress()`](#getlocaladdress) method will most likely return a
+  `null` value as this value is not applicable to UDS connections here.
+
+#### FixedUriConnector
+
+The `FixedUriConnector` class implements the
+[`ConnectorInterface`](#connectorinterface) and decorates an existing Connector
+to always use a fixed, preconfigured URI.
+
+This can be useful for consumers that do not support certain URIs, such as
+when you want to explicitly connect to a Unix domain socket (UDS) path
+instead of connecting to a default address assumed by an higher-level API:
+
+```php
+$connector = new FixedUriConnector(
+    'unix:///var/run/docker.sock',
+    new UnixConnector($loop)
+);
+
+// destination will be ignored, actually connects to Unix domain socket
+$promise = $connector->connect('localhost:80');
+```
+
+## Install
+
+The recommended way to install this library is [through Composer](https://getcomposer.org).
+[New to Composer?](https://getcomposer.org/doc/00-intro.md)
+
+This will install the latest supported version:
+
+```bash
+$ composer require react/socket:^0.8.10
+```
+
+See also the [CHANGELOG](CHANGELOG.md) for details about version upgrades.
+
+This project aims to run on any platform and thus does not require any PHP
+extensions and supports running on legacy PHP 5.3 through current PHP 7+ and HHVM.
+It's *highly recommended to use PHP 7+* for this project, partly due to its vast
+performance improvements and partly because legacy PHP versions require several
+workarounds as described below.
+
+Secure TLS connections received some major upgrades starting with PHP 5.6, with
+the defaults now being more secure, while older versions required explicit
+context options.
+This library does not take responsibility over these context options, so it's
+up to consumers of this library to take care of setting appropriate context
+options as described above.
+
+All versions of PHP prior to 5.6.8 suffered from a buffering issue where reading
+from a streaming TLS connection could be one `data` event behind.
+This library implements a work-around to try to flush the complete incoming
+data buffers on these legacy PHP versions, which has a penalty of around 10% of
+throughput on all connections.
+With this work-around, we have not been able to reproduce this issue anymore,
+but we have seen reports of people saying this could still affect some of the
+older PHP versions (`5.5.23`, `5.6.7`, and `5.6.8`).
+Note that this only affects *some* higher-level streaming protocols, such as
+IRC over TLS, but should not affect HTTP over TLS (HTTPS).
+Further investigation of this issue is needed.
+For more insights, this issue is also covered by our test suite.
+
+PHP < 7.1.4 (and PHP < 7.0.18) suffers from a bug when writing big
+chunks of data over TLS streams at once.
+We try to work around this by limiting the write chunk size to 8192
+bytes for older PHP versions only.
+This is only a work-around and has a noticable performance penalty on
+affected versions.
+
+This project also supports running on HHVM.
+Note that really old HHVM < 3.8 does not support secure TLS connections, as it
+lacks the required `stream_socket_enable_crypto()` function.
+As such, trying to create a secure TLS connections on affected versions will
+return a rejected promise instead.
+This issue is also covered by our test suite, which will skip related tests
+on affected versions.
+
+## Tests
+
+To run the test suite, you first need to clone this repo and then install all
+dependencies [through Composer](https://getcomposer.org):
+
+```bash
+$ composer install
+```
+
+To run the test suite, go to the project root and run:
+
+```bash
+$ php vendor/bin/phpunit
+```
+
+The test suite also contains a number of functional integration tests that rely
+on a stable internet connection.
+If you do not want to run these, they can simply be skipped like this:
+
+```bash
+$ php vendor/bin/phpunit --exclude-group internet
+```
+
+## License
+
+MIT, see [LICENSE file](LICENSE).
diff --git a/assets/php/vendor/react/socket/composer.json b/assets/php/vendor/react/socket/composer.json
new file mode 100644
index 0000000..bc85aab
--- /dev/null
+++ b/assets/php/vendor/react/socket/composer.json
@@ -0,0 +1,29 @@
+{
+    "name": "react/socket",
+    "description": "Async, streaming plaintext TCP/IP and secure TLS socket server and client connections for ReactPHP",
+    "keywords": ["async", "socket", "stream", "connection", "ReactPHP"],
+    "license": "MIT",
+    "require": {
+        "php": ">=5.3.0",
+        "evenement/evenement": "^3.0 || ^2.0 || ^1.0",
+        "react/dns": "^0.4.13",
+        "react/event-loop": "^1.0 || ^0.5 || ^0.4 || ^0.3.5",
+        "react/stream": "^1.0 || ^0.7.1",
+        "react/promise": "^2.1 || ^1.2",
+        "react/promise-timer": "~1.0"
+    },
+    "require-dev": {
+        "clue/block-react": "^1.2",
+        "phpunit/phpunit": "^6.4 || ^5.7 || ^4.8.35"
+    },
+    "autoload": {
+        "psr-4": {
+            "React\\Socket\\": "src"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "React\\Tests\\Socket\\": "tests"
+        }
+    }
+}
diff --git a/assets/php/vendor/react/socket/examples/01-echo-server.php b/assets/php/vendor/react/socket/examples/01-echo-server.php
new file mode 100644
index 0000000..2c0be57
--- /dev/null
+++ b/assets/php/vendor/react/socket/examples/01-echo-server.php
@@ -0,0 +1,42 @@
+<?php
+
+// Just start this server and connect to it. Everything you send to it will be
+// sent back to you.
+//
+// $ php examples/01-echo-server.php 8000
+// $ telnet localhost 8000
+//
+// You can also run a secure TLS echo server like this:
+//
+// $ php examples/01-echo-server.php tls://127.0.0.1:8000 examples/localhost.pem
+// $ openssl s_client -connect localhost:8000
+//
+// You can also run a Unix domain socket (UDS) server like this:
+//
+// $ php examples/01-echo-server.php unix:///tmp/server.sock
+// $ nc -U /tmp/server.sock
+
+use React\EventLoop\Factory;
+use React\Socket\Server;
+use React\Socket\ConnectionInterface;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = Factory::create();
+
+$server = new Server(isset($argv[1]) ? $argv[1] : 0, $loop, array(
+    'tls' => array(
+        'local_cert' => isset($argv[2]) ? $argv[2] : (__DIR__ . '/localhost.pem')
+    )
+));
+
+$server->on('connection', function (ConnectionInterface $conn) {
+    echo '[' . $conn->getRemoteAddress() . ' connected]' . PHP_EOL;
+    $conn->pipe($conn);
+});
+
+$server->on('error', 'printf');
+
+echo 'Listening on ' . $server->getAddress() . PHP_EOL;
+
+$loop->run();
diff --git a/assets/php/vendor/react/socket/examples/02-chat-server.php b/assets/php/vendor/react/socket/examples/02-chat-server.php
new file mode 100644
index 0000000..46439e0
--- /dev/null
+++ b/assets/php/vendor/react/socket/examples/02-chat-server.php
@@ -0,0 +1,59 @@
+<?php
+
+// Just start this server and connect with any number of clients to it.
+// Everything a client sends will be broadcasted to all connected clients.
+//
+// $ php examples/02-chat-server.php 8000
+// $ telnet localhost 8000
+//
+// You can also run a secure TLS chat server like this:
+//
+// $ php examples/02-chat-server.php tls://127.0.0.1:8000 examples/localhost.pem
+// $ openssl s_client -connect localhost:8000
+//
+// You can also run a Unix domain socket (UDS) server like this:
+//
+// $ php examples/02-chat-server.php unix:///tmp/server.sock
+// $ nc -U /tmp/server.sock
+
+use React\EventLoop\Factory;
+use React\Socket\Server;
+use React\Socket\ConnectionInterface;
+use React\Socket\LimitingServer;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = Factory::create();
+
+$server = new Server(isset($argv[1]) ? $argv[1] : 0, $loop, array(
+    'tls' => array(
+        'local_cert' => isset($argv[2]) ? $argv[2] : (__DIR__ . '/localhost.pem')
+    )
+));
+
+$server = new LimitingServer($server, null);
+
+$server->on('connection', function (ConnectionInterface $client) use ($server) {
+    // whenever a new message comes in
+    $client->on('data', function ($data) use ($client, $server) {
+        // remove any non-word characters (just for the demo)
+        $data = trim(preg_replace('/[^\w\d \.\,\-\!\?]/u', '', $data));
+
+        // ignore empty messages
+        if ($data === '') {
+            return;
+        }
+
+        // prefix with client IP and broadcast to all connected clients
+        $data = trim(parse_url($client->getRemoteAddress(), PHP_URL_HOST), '[]') . ': ' . $data . PHP_EOL;
+        foreach ($server->getConnections() as $connection) {
+            $connection->write($data);
+        }
+    });
+});
+
+$server->on('error', 'printf');
+
+echo 'Listening on ' . $server->getAddress() . PHP_EOL;
+
+$loop->run();
diff --git a/assets/php/vendor/react/socket/examples/03-http-server.php b/assets/php/vendor/react/socket/examples/03-http-server.php
new file mode 100644
index 0000000..eb6d454
--- /dev/null
+++ b/assets/php/vendor/react/socket/examples/03-http-server.php
@@ -0,0 +1,57 @@
+<?php
+
+// Simple HTTP server example (for illustration purposes only).
+// This shows how a plaintext TCP/IP connection is accepted to then receive an
+// application level protocol message (HTTP request) and reply with an
+// application level protocol message (HTTP response) in return.
+//
+// This example exists for illustraion purposes only. It does not actually
+// parse incoming HTTP requests, so you can actually send *anything* and will
+// still respond with a valid HTTP response.
+// Real applications should use react/http instead!
+//
+// Just start this server and send a request to it:
+//
+// $ php examples/03-http-server.php 8000
+// $ curl -v http://localhost:8000/
+// $ ab -n1000 -c10 http://localhost:8000/
+// $ docker run -it --rm --net=host jordi/ab ab -n1000 -c10 http://localhost:8000/
+//
+// You can also run a secure HTTPS echo server like this:
+//
+// $ php examples/03-http-server.php tls://127.0.0.1:8000 examples/localhost.pem
+// $ curl -v --insecure https://localhost:8000/
+// $ ab -n1000 -c10 https://localhost:8000/
+// $ docker run -it --rm --net=host jordi/ab ab -n1000 -c10 https://localhost:8000/
+//
+// You can also run a Unix domain socket (UDS) server like this:
+//
+// $ php examples/03-http-server.php unix:///tmp/server.sock
+// $ nc -U /tmp/server.sock
+
+use React\EventLoop\Factory;
+use React\Socket\Server;
+use React\Socket\ConnectionInterface;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = Factory::create();
+
+$server = new Server(isset($argv[1]) ? $argv[1] : 0, $loop, array(
+    'tls' => array(
+        'local_cert' => isset($argv[2]) ? $argv[2] : (__DIR__ . '/localhost.pem')
+    )
+));
+
+$server->on('connection', function (ConnectionInterface $conn) {
+    $conn->once('data', function () use ($conn) {
+        $body = "<html><h1>Hello world!</h1></html>\r\n";
+        $conn->end("HTTP/1.1 200 OK\r\nContent-Length: " . strlen($body) . "\r\nConnection: close\r\n\r\n" . $body);
+    });
+});
+
+$server->on('error', 'printf');
+
+echo 'Listening on ' . strtr($server->getAddress(), array('tcp:' => 'http:', 'tls:' => 'https:')) . PHP_EOL;
+
+$loop->run();
diff --git a/assets/php/vendor/react/socket/examples/11-http-client.php b/assets/php/vendor/react/socket/examples/11-http-client.php
new file mode 100644
index 0000000..2b64a43
--- /dev/null
+++ b/assets/php/vendor/react/socket/examples/11-http-client.php
@@ -0,0 +1,36 @@
+<?php
+
+// Simple plaintext HTTP client example (for illustration purposes only).
+// This shows how a plaintext TCP/IP connection is established to then send an
+// application level protocol message (HTTP).
+// Real applications should use react/http-client instead!
+//
+// This simple example only accepts an optional host parameter to send the
+// request to. See also example #22 for proper URI parsing.
+//
+// $ php examples/11-http-client.php
+// $ php examples/11-http-client.php reactphp.org
+
+use React\EventLoop\Factory;
+use React\Socket\Connector;
+use React\Socket\ConnectionInterface;
+
+$host = isset($argv[1]) ? $argv[1] : 'www.google.com';
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = Factory::create();
+$connector = new Connector($loop);
+
+$connector->connect($host. ':80')->then(function (ConnectionInterface $connection) use ($host) {
+    $connection->on('data', function ($data) {
+        echo $data;
+    });
+    $connection->on('close', function () {
+        echo '[CLOSED]' . PHP_EOL;
+    });
+
+    $connection->write("GET / HTTP/1.0\r\nHost: $host\r\n\r\n");
+}, 'printf');
+
+$loop->run();
diff --git a/assets/php/vendor/react/socket/examples/12-https-client.php b/assets/php/vendor/react/socket/examples/12-https-client.php
new file mode 100644
index 0000000..6e3f279
--- /dev/null
+++ b/assets/php/vendor/react/socket/examples/12-https-client.php
@@ -0,0 +1,36 @@
+<?php
+
+// Simple secure HTTPS client example (for illustration purposes only).
+// This shows how a secure TLS connection is established to then send an
+// application level protocol message (HTTP).
+// Real applications should use react/http-client instead
+//
+// This simple example only accepts an optional host parameter to send the
+// request to. See also example #22 for proper URI parsing.
+//
+// $ php examples/12-https-client.php
+// $ php examples/12-https-client.php reactphp.org
+
+use React\EventLoop\Factory;
+use React\Socket\Connector;
+use React\Socket\ConnectionInterface;
+
+$host = isset($argv[1]) ? $argv[1] : 'www.google.com';
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = Factory::create();
+$connector = new Connector($loop);
+
+$connector->connect('tls://' . $host . ':443')->then(function (ConnectionInterface $connection) use ($host) {
+    $connection->on('data', function ($data) {
+        echo $data;
+    });
+    $connection->on('close', function () {
+        echo '[CLOSED]' . PHP_EOL;
+    });
+
+    $connection->write("GET / HTTP/1.0\r\nHost: $host\r\n\r\n");
+}, 'printf');
+
+$loop->run();
diff --git a/assets/php/vendor/react/socket/examples/21-netcat-client.php b/assets/php/vendor/react/socket/examples/21-netcat-client.php
new file mode 100644
index 0000000..9140e2c
--- /dev/null
+++ b/assets/php/vendor/react/socket/examples/21-netcat-client.php
@@ -0,0 +1,68 @@
+<?php
+
+// Simple plaintext TCP/IP and secure TLS client example that pipes console I/O.
+// This shows how a plaintext TCP/IP or secure TLS connection is established and
+// then everything you type on STDIN will be sent and everything the server
+// sends will be piped to your STDOUT.
+//
+// $ php examples/21-netcat-client.php www.google.com:80
+// $ php examples/21-netcat-client.php tls://www.google.com:443
+
+use React\EventLoop\Factory;
+use React\Socket\Connector;
+use React\Socket\ConnectionInterface;
+use React\Stream\ReadableResourceStream;
+use React\Stream\WritableResourceStream;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+if (!defined('STDIN')) {
+    echo 'STDIO streams require CLI SAPI' . PHP_EOL;
+    exit(1);
+}
+
+if (DIRECTORY_SEPARATOR === '\\') {
+    fwrite(STDERR, 'Non-blocking console I/O not supported on Microsoft Windows' . PHP_EOL);
+    exit(1);
+}
+
+if (!isset($argv[1])) {
+    fwrite(STDERR, 'Usage error: required argument <host:port>' . PHP_EOL);
+    exit(1);
+}
+
+$loop = Factory::create();
+$connector = new Connector($loop);
+
+$stdin = new ReadableResourceStream(STDIN, $loop);
+$stdin->pause();
+$stdout = new WritableResourceStream(STDOUT, $loop);
+$stderr = new WritableResourceStream(STDERR, $loop);
+
+$stderr->write('Connecting' . PHP_EOL);
+
+$connector->connect($argv[1])->then(function (ConnectionInterface $connection) use ($stdin, $stdout, $stderr) {
+    // pipe everything from STDIN into connection
+    $stdin->resume();
+    $stdin->pipe($connection);
+
+    // pipe everything from connection to STDOUT
+    $connection->pipe($stdout);
+
+    // report errors to STDERR
+    $connection->on('error', function ($error) use ($stderr) {
+        $stderr->write('Stream ERROR: ' . $error . PHP_EOL);
+    });
+
+    // report closing and stop reading from input
+    $connection->on('close', function () use ($stderr, $stdin) {
+        $stderr->write('[CLOSED]' . PHP_EOL);
+        $stdin->close();
+    });
+
+    $stderr->write('Connected' . PHP_EOL);
+}, function ($error) use ($stderr) {
+    $stderr->write('Connection ERROR: ' . $error . PHP_EOL);
+});
+
+$loop->run();
diff --git a/assets/php/vendor/react/socket/examples/22-http-client.php b/assets/php/vendor/react/socket/examples/22-http-client.php
new file mode 100644
index 0000000..fcb8107
--- /dev/null
+++ b/assets/php/vendor/react/socket/examples/22-http-client.php
@@ -0,0 +1,60 @@
+<?php
+
+// Simple plaintext HTTP and secure HTTPS client example (for illustration purposes only).
+// This shows how an URI parameter can parsed to decide whether to establish
+// a plaintext TCP/IP or secure TLS connection and then send an
+// application level protocol message (HTTP).
+// Real applications should use react/http-client instead!
+//
+// Unlike examples #11 and #12, this example will actually take an optional URI
+// parameter and parse it to connect to the correct default port and use the
+// correct transport protocol.
+//
+// $ php examples/22-http-client.php
+// $ php examples/22-http-client.php https://reactphp.org/
+
+use React\EventLoop\Factory;
+use React\Socket\ConnectionInterface;
+use React\Socket\Connector;
+use React\Stream\WritableResourceStream;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$uri = isset($argv[1]) ? $argv[1] : 'www.google.com';
+
+if (strpos($uri, '://') === false) {
+    $uri = 'http://' . $uri;
+}
+$parts = parse_url($uri);
+
+if (!$parts || !isset($parts['scheme'], $parts['host'])) {
+    fwrite(STDERR, 'Usage error: required argument <host:port>' . PHP_EOL);
+    exit(1);
+}
+
+$loop = Factory::create();
+$connector = new Connector($loop);
+
+if (!isset($parts['port'])) {
+    $parts['port'] = $parts['scheme'] === 'https' ? 443 : 80;
+}
+
+$host = $parts['host'];
+if (($parts['scheme'] === 'http' && $parts['port'] !== 80) || ($parts['scheme'] === 'https' && $parts['port'] !== 443)) {
+    $host .= ':' . $parts['port'];
+}
+$target = ($parts['scheme'] === 'https' ? 'tls' : 'tcp') . '://' . $parts['host'] . ':' . $parts['port'];
+$resource = isset($parts['path']) ? $parts['path'] : '/';
+if (isset($parts['query'])) {
+    $resource .= '?' . $parts['query'];
+}
+
+$stdout = new WritableResourceStream(STDOUT, $loop);
+
+$connector->connect($target)->then(function (ConnectionInterface $connection) use ($resource, $host, $stdout) {
+    $connection->pipe($stdout);
+
+    $connection->write("GET $resource HTTP/1.0\r\nHost: $host\r\n\r\n");
+}, 'printf');
+
+$loop->run();
diff --git a/assets/php/vendor/react/socket/examples/91-benchmark-server.php b/assets/php/vendor/react/socket/examples/91-benchmark-server.php
new file mode 100644
index 0000000..420d474
--- /dev/null
+++ b/assets/php/vendor/react/socket/examples/91-benchmark-server.php
@@ -0,0 +1,60 @@
+<?php
+
+// Just start the server and connect to it. It will count the number of bytes
+// sent for each connection and will print the average throughput once the
+// connection closes.
+//
+// $ php examples/91-benchmark-server.php 8000
+// $ telnet localhost 8000
+// $ echo hello world | nc -N localhost 8000
+// $ dd if=/dev/zero bs=1M count=1000 | nc -N localhost 8000
+//
+// You can also run a secure TLS benchmarking server like this:
+//
+// $ php examples/91-benchmark-server.php tls://127.0.0.1:8000 examples/localhost.pem
+// $ openssl s_client -connect localhost:8000
+// $ echo hello world | openssl s_client -connect localhost:8000
+// $ dd if=/dev/zero bs=1M count=1000 | openssl s_client -connect localhost:8000
+//
+// You can also run a Unix domain socket (UDS) server benchmark like this:
+//
+// $ php examples/91-benchmark-server.php unix:///tmp/server.sock
+// $ nc -N -U /tmp/server.sock
+// $ dd if=/dev/zero bs=1M count=1000 | nc -N -U /tmp/server.sock
+
+use React\EventLoop\Factory;
+use React\Socket\Server;
+use React\Socket\ConnectionInterface;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$loop = Factory::create();
+
+$server = new Server(isset($argv[1]) ? $argv[1] : 0, $loop, array(
+    'tls' => array(
+        'local_cert' => isset($argv[2]) ? $argv[2] : (__DIR__ . '/localhost.pem')
+    )
+));
+
+$server->on('connection', function (ConnectionInterface $conn) use ($loop) {
+    echo '[connected]' . PHP_EOL;
+
+    // count the number of bytes received from this connection
+    $bytes = 0;
+    $conn->on('data', function ($chunk) use (&$bytes) {
+        $bytes += strlen($chunk);
+    });
+
+    // report average throughput once client disconnects
+    $t = microtime(true);
+    $conn->on('close', function () use ($conn, $t, &$bytes) {
+        $t = microtime(true) - $t;
+        echo '[disconnected after receiving ' . $bytes . ' bytes in ' . round($t, 3) . 's => ' . round($bytes / $t / 1024 / 1024, 1) . ' MiB/s]' . PHP_EOL;
+    });
+});
+
+$server->on('error', 'printf');
+
+echo 'Listening on ' . $server->getAddress() . PHP_EOL;
+
+$loop->run();
diff --git a/assets/php/vendor/react/socket/examples/99-generate-self-signed.php b/assets/php/vendor/react/socket/examples/99-generate-self-signed.php
new file mode 100644
index 0000000..00f9314
--- /dev/null
+++ b/assets/php/vendor/react/socket/examples/99-generate-self-signed.php
@@ -0,0 +1,31 @@
+<?php
+
+// A very simple helper script used to generate self-signed certificates.
+// Accepts the CN and an optional passphrase to encrypt the private key.
+//
+// $ php 10-generate-self-signed.php localhost swordfish > secret.pem
+
+// certificate details (Distinguished Name)
+// (OpenSSL applies defaults to missing fields)
+$dn = array(
+    "commonName" => isset($argv[1]) ? $argv[1] : "localhost",
+//     "countryName" => "AU",
+//     "stateOrProvinceName" => "Some-State",
+//     "localityName" => "London",
+//     "organizationName" => "Internet Widgits Pty Ltd",
+//     "organizationalUnitName" => "R&D",
+//     "emailAddress" => "admin@example.com"
+);
+
+// create certificate which is valid for ~10 years
+$privkey = openssl_pkey_new();
+$cert = openssl_csr_new($dn, $privkey);
+$cert = openssl_csr_sign($cert, null, $privkey, 3650);
+
+// export public and (optionally encrypted) private key in PEM format
+openssl_x509_export($cert, $out);
+echo $out;
+
+$passphrase = isset($argv[2]) ? $argv[2] : null;
+openssl_pkey_export($privkey, $out, $passphrase);
+echo $out;
diff --git a/assets/php/vendor/react/socket/examples/localhost.pem b/assets/php/vendor/react/socket/examples/localhost.pem
new file mode 100644
index 0000000..be69279
--- /dev/null
+++ b/assets/php/vendor/react/socket/examples/localhost.pem
@@ -0,0 +1,49 @@
+-----BEGIN CERTIFICATE-----
+MIIDfTCCAmWgAwIBAgIBADANBgkqhkiG9w0BAQUFADBZMRIwEAYDVQQDDAkxMjcu
+MC4wLjExCzAJBgNVBAYTAkFVMRMwEQYDVQQIDApTb21lLVN0YXRlMSEwHwYDVQQK
+DBhJbnRlcm5ldCBXaWRnaXRzIFB0eSBMdGQwHhcNMTYxMjMwMTQ1OTA2WhcNMjYx
+MjI4MTQ1OTA2WjBZMRIwEAYDVQQDDAkxMjcuMC4wLjExCzAJBgNVBAYTAkFVMRMw
+EQYDVQQIDApTb21lLVN0YXRlMSEwHwYDVQQKDBhJbnRlcm5ldCBXaWRnaXRzIFB0
+eSBMdGQwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQC8SZWNS+Ktg0Py
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+zNi6JxxpDAXTFSB4GiWsI4tFu2XmMRhfm6LRK4WPfsZIJKokdiG5fKSPDn7nrVj0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+-----END CERTIFICATE-----
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----
diff --git a/assets/php/vendor/react/socket/examples/localhost_swordfish.pem b/assets/php/vendor/react/socket/examples/localhost_swordfish.pem
new file mode 100644
index 0000000..7d1ee80
--- /dev/null
+++ b/assets/php/vendor/react/socket/examples/localhost_swordfish.pem
@@ -0,0 +1,51 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
+-----BEGIN ENCRYPTED PRIVATE KEY-----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++DqaIHz2jUetMo7gWtqGn/wwSopOs87VM1rcALhZL4EsJ+Zy81I/hA32RNnGbuol
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+DAFYP2jksBqijM8YtEgPWYzEP5buYxZnf/LK7FDocLsNcdF38UaKBbeF90e7bR8j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+-----END ENCRYPTED PRIVATE KEY-----
diff --git a/assets/php/vendor/react/socket/phpunit.xml.dist b/assets/php/vendor/react/socket/phpunit.xml.dist
new file mode 100644
index 0000000..13d3fab
--- /dev/null
+++ b/assets/php/vendor/react/socket/phpunit.xml.dist
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit backupGlobals="false"
+         backupStaticAttributes="false"
+         colors="true"
+         convertErrorsToExceptions="true"
+         convertNoticesToExceptions="true"
+         convertWarningsToExceptions="true"
+         processIsolation="false"
+         stopOnFailure="false"
+         syntaxCheck="false"
+         bootstrap="vendor/autoload.php"
+>
+    <testsuites>
+        <testsuite name="React Test Suite">
+            <directory>./tests/</directory>
+        </testsuite>
+    </testsuites>
+
+    <filter>
+        <whitelist>
+            <directory>./src/</directory>
+        </whitelist>
+    </filter>
+</phpunit>
diff --git a/assets/php/vendor/react/socket/src/Connection.php b/assets/php/vendor/react/socket/src/Connection.php
new file mode 100644
index 0000000..c6267cc
--- /dev/null
+++ b/assets/php/vendor/react/socket/src/Connection.php
@@ -0,0 +1,178 @@
+<?php
+
+namespace React\Socket;
+
+use Evenement\EventEmitter;
+use React\EventLoop\LoopInterface;
+use React\Stream\DuplexResourceStream;
+use React\Stream\Util;
+use React\Stream\WritableResourceStream;
+use React\Stream\WritableStreamInterface;
+
+/**
+ * The actual connection implementation for ConnectionInterface
+ *
+ * This class should only be used internally, see ConnectionInterface instead.
+ *
+ * @see ConnectionInterface
+ * @internal
+ */
+class Connection extends EventEmitter implements ConnectionInterface
+{
+    /**
+     * Internal flag whether this is a Unix domain socket (UDS) connection
+     *
+     * @internal
+     */
+    public $unix = false;
+
+    /**
+     * Internal flag whether encryption has been enabled on this connection
+     *
+     * Mostly used by internal StreamEncryption so that connection returns
+     * `tls://` scheme for encrypted connections instead of `tcp://`.
+     *
+     * @internal
+     */
+    public $encryptionEnabled = false;
+
+    /** @internal */
+    public $stream;
+
+    private $input;
+
+    public function __construct($resource, LoopInterface $loop)
+    {
+        // PHP < 5.6.8 suffers from a buffer indicator bug on secure TLS connections
+        // as a work-around we always read the complete buffer until its end.
+        // The buffer size is limited due to TCP/IP buffers anyway, so this
+        // should not affect usage otherwise.
+        // See https://bugs.php.net/bug.php?id=65137
+        // https://bugs.php.net/bug.php?id=41631
+        // https://github.com/reactphp/socket-client/issues/24
+        $clearCompleteBuffer = PHP_VERSION_ID < 50608;
+
+        // PHP < 7.1.4 (and PHP < 7.0.18) suffers from a bug when writing big
+        // chunks of data over TLS streams at once.
+        // We try to work around this by limiting the write chunk size to 8192
+        // bytes for older PHP versions only.
+        // This is only a work-around and has a noticable performance penalty on
+        // affected versions. Please update your PHP version.
+        // This applies to all streams because TLS may be enabled later on.
+        // See https://github.com/reactphp/socket/issues/105
+        $limitWriteChunks = (PHP_VERSION_ID < 70018 || (PHP_VERSION_ID >= 70100 && PHP_VERSION_ID < 70104));
+
+        $this->input = new DuplexResourceStream(
+            $resource,
+            $loop,
+            $clearCompleteBuffer ? -1 : null,
+            new WritableResourceStream($resource, $loop, null, $limitWriteChunks ? 8192 : null)
+        );
+
+        $this->stream = $resource;
+
+        Util::forwardEvents($this->input, $this, array('data', 'end', 'error', 'close', 'pipe', 'drain'));
+
+        $this->input->on('close', array($this, 'close'));
+    }
+
+    public function isReadable()
+    {
+        return $this->input->isReadable();
+    }
+
+    public function isWritable()
+    {
+        return $this->input->isWritable();
+    }
+
+    public function pause()
+    {
+        $this->input->pause();
+    }
+
+    public function resume()
+    {
+        $this->input->resume();
+    }
+
+    public function pipe(WritableStreamInterface $dest, array $options = array())
+    {
+        return $this->input->pipe($dest, $options);
+    }
+
+    public function write($data)
+    {
+        return $this->input->write($data);
+    }
+
+    public function end($data = null)
+    {
+        $this->input->end($data);
+    }
+
+    public function close()
+    {
+        $this->input->close();
+        $this->handleClose();
+        $this->removeAllListeners();
+    }
+
+    public function handleClose()
+    {
+        if (!is_resource($this->stream)) {
+            return;
+        }
+
+        // Try to cleanly shut down socket and ignore any errors in case other
+        // side already closed. Shutting down may return to blocking mode on
+        // some legacy versions, so reset to non-blocking just in case before
+        // continuing to close the socket resource.
+        // Underlying Stream implementation will take care of closing file
+        // handle, so we otherwise keep this open here.
+        @stream_socket_shutdown($this->stream, STREAM_SHUT_RDWR);
+        stream_set_blocking($this->stream, false);
+    }
+
+    public function getRemoteAddress()
+    {
+        return $this->parseAddress(@stream_socket_get_name($this->stream, true));
+    }
+
+    public function getLocalAddress()
+    {
+        return $this->parseAddress(@stream_socket_get_name($this->stream, false));
+    }
+
+    private function parseAddress($address)
+    {
+        if ($address === false) {
+            return null;
+        }
+
+        if ($this->unix) {
+            // remove trailing colon from address for HHVM < 3.19: https://3v4l.org/5C1lo
+            // note that technically ":" is a valid address, so keep this in place otherwise
+            if (substr($address, -1) === ':' && defined('HHVM_VERSION_ID') && HHVM_VERSION_ID < 31900) {
+                $address = (string)substr($address, 0, -1);
+            }
+
+            // work around unknown addresses should return null value: https://3v4l.org/5C1lo and https://bugs.php.net/bug.php?id=74556
+            // PHP uses "\0" string and HHVM uses empty string (colon removed above)
+            if ($address === '' || $address[0] === "\x00" ) {
+                return null;
+            }
+
+            return 'unix://' . $address;
+        }
+
+        // check if this is an IPv6 address which includes multiple colons but no square brackets
+        $pos = strrpos($address, ':');
+        if ($pos !== false && strpos($address, ':') < $pos && substr($address, 0, 1) !== '[') {
+            $port = substr($address, $pos + 1);
+            $address = '[' . substr($address, 0, $pos) . ']:' . $port;
+        }
+
+        return ($this->encryptionEnabled ? 'tls' : 'tcp') . '://' . $address;
+    }
+}
diff --git a/assets/php/vendor/react/socket/src/ConnectionInterface.php b/assets/php/vendor/react/socket/src/ConnectionInterface.php
new file mode 100644
index 0000000..64613b5
--- /dev/null
+++ b/assets/php/vendor/react/socket/src/ConnectionInterface.php
@@ -0,0 +1,119 @@
+<?php
+
+namespace React\Socket;
+
+use React\Stream\DuplexStreamInterface;
+
+/**
+ * Any incoming and outgoing connection is represented by this interface,
+ * such as a normal TCP/IP connection.
+ *
+ * An incoming or outgoing connection is a duplex stream (both readable and
+ * writable) that implements React's
+ * [`DuplexStreamInterface`](https://github.com/reactphp/stream#duplexstreaminterface).
+ * It contains additional properties for the local and remote address (client IP)
+ * where this connection has been established to/from.
+ *
+ * Most commonly, instances implementing this `ConnectionInterface` are emitted
+ * by all classes implementing the [`ServerInterface`](#serverinterface) and
+ * used by all classes implementing the [`ConnectorInterface`](#connectorinterface).
+ *
+ * Because the `ConnectionInterface` implements the underlying
+ * [`DuplexStreamInterface`](https://github.com/reactphp/stream#duplexstreaminterface)
+ * you can use any of its events and methods as usual:
+ *
+ * ```php
+ * $connection->on('data', function ($chunk) {
+ *     echo $chunk;
+ * });
+ *
+ * $connection->on('end', function () {
+ *     echo 'ended';
+ * });
+ *
+ * $connection->on('error', function (Exception $e) {
+ *     echo 'error: ' . $e->getMessage();
+ * });
+ *
+ * $connection->on('close', function () {
+ *     echo 'closed';
+ * });
+ *
+ * $connection->write($data);
+ * $connection->end($data = null);
+ * $connection->close();
+ * // …
+ * ```
+ *
+ * For more details, see the
+ * [`DuplexStreamInterface`](https://github.com/reactphp/stream#duplexstreaminterface).
+ *
+ * @see DuplexStreamInterface
+ * @see ServerInterface
+ * @see ConnectorInterface
+ */
+interface ConnectionInterface extends DuplexStreamInterface
+{
+    /**
+     * Returns the full remote address (URI) where this connection has been established with
+     *
+     * ```php
+     * $address = $connection->getRemoteAddress();
+     * echo 'Connection with ' . $address . PHP_EOL;
+     * ```
+     *
+     * If the remote address can not be determined or is unknown at this time (such as
+     * after the connection has been closed), it MAY return a `NULL` value instead.
+     *
+     * Otherwise, it will return the full address (URI) as a string value, such
+     * as `tcp://127.0.0.1:8080`, `tcp://[::1]:80`, `tls://127.0.0.1:443`,
+     * `unix://example.sock` or `unix:///path/to/example.sock`.
+     * Note that individual URI components are application specific and depend
+     * on the underlying transport protocol.
+     *
+     * If this is a TCP/IP based connection and you only want the remote IP, you may
+     * use something like this:
+     *
+     * ```php
+     * $address = $connection->getRemoteAddress();
+     * $ip = trim(parse_url($address, PHP_URL_HOST), '[]');
+     * echo 'Connection with ' . $ip . PHP_EOL;
+     * ```
+     *
+     * @return ?string remote address (URI) or null if unknown
+     */
+    public function getRemoteAddress();
+
+    /**
+     * Returns the full local address (full URI with scheme, IP and port) where this connection has been established with
+     *
+     * ```php
+     * $address = $connection->getLocalAddress();
+     * echo 'Connection with ' . $address . PHP_EOL;
+     * ```
+     *
+     * If the local address can not be determined or is unknown at this time (such as
+     * after the connection has been closed), it MAY return a `NULL` value instead.
+     *
+     * Otherwise, it will return the full address (URI) as a string value, such
+     * as `tcp://127.0.0.1:8080`, `tcp://[::1]:80`, `tls://127.0.0.1:443`,
+     * `unix://example.sock` or `unix:///path/to/example.sock`.
+     * Note that individual URI components are application specific and depend
+     * on the underlying transport protocol.
+     *
+     * This method complements the [`getRemoteAddress()`](#getremoteaddress) method,
+     * so they should not be confused.
+     *
+     * If your `TcpServer` instance is listening on multiple interfaces (e.g. using
+     * the address `0.0.0.0`), you can use this method to find out which interface
+     * actually accepted this connection (such as a public or local interface).
+     *
+     * If your system has multiple interfaces (e.g. a WAN and a LAN interface),
+     * you can use this method to find out which interface was actually
+     * used for this connection.
+     *
+     * @return ?string local address (URI) or null if unknown
+     * @see self::getRemoteAddress()
+     */
+    public function getLocalAddress();
+}
diff --git a/assets/php/vendor/react/socket/src/Connector.php b/assets/php/vendor/react/socket/src/Connector.php
new file mode 100644
index 0000000..75276bc
--- /dev/null
+++ b/assets/php/vendor/react/socket/src/Connector.php
@@ -0,0 +1,136 @@
+<?php
+
+namespace React\Socket;
+
+use React\Dns\Config\Config;
+use React\Dns\Resolver\Factory;
+use React\Dns\Resolver\Resolver;
+use React\EventLoop\LoopInterface;
+use React\Promise;
+use RuntimeException;
+
+/**
+ * The `Connector` class is the main class in this package that implements the
+ * `ConnectorInterface` and allows you to create streaming connections.
+ *
+ * You can use this connector to create any kind of streaming connections, such
+ * as plaintext TCP/IP, secure TLS or local Unix connection streams.
+ *
+ * Under the hood, the `Connector` is implemented as a *higher-level facade*
+ * or the lower-level connectors implemented in this package. This means it
+ * also shares all of their features and implementation details.
+ * If you want to typehint in your higher-level protocol implementation, you SHOULD
+ * use the generic [`ConnectorInterface`](#connectorinterface) instead.
+ *
+ * @see ConnectorInterface for the base interface
+ */
+final class Connector implements ConnectorInterface
+{
+    private $connectors = array();
+
+    public function __construct(LoopInterface $loop, array $options = array())
+    {
+        // apply default options if not explicitly given
+        $options += array(
+            'tcp' => true,
+            'tls' => true,
+            'unix' => true,
+
+            'dns' => true,
+            'timeout' => true,
+        );
+
+        if ($options['timeout'] === true) {
+            $options['timeout'] = (float)ini_get("default_socket_timeout");
+        }
+
+        if ($options['tcp'] instanceof ConnectorInterface) {
+            $tcp = $options['tcp'];
+        } else {
+            $tcp = new TcpConnector(
+                $loop,
+                is_array($options['tcp']) ? $options['tcp'] : array()
+            );
+        }
+
+        if ($options['dns'] !== false) {
+            if ($options['dns'] instanceof Resolver) {
+                $resolver = $options['dns'];
+            } else {
+                if ($options['dns'] !== true) {
+                    $server = $options['dns'];
+                } else {
+                    // try to load nameservers from system config or default to Google's public DNS
+                    $config = Config::loadSystemConfigBlocking();
+                    $server = $config->nameservers ? reset($config->nameservers) : '8.8.8.8';
+                }
+
+                $factory = new Factory();
+                $resolver = $factory->create(
+                    $server,
+                    $loop
+                );
+            }
+
+            $tcp = new DnsConnector($tcp, $resolver);
+        }
+
+        if ($options['tcp'] !== false) {
+            $options['tcp'] = $tcp;
+
+            if ($options['timeout'] !== false) {
+                $options['tcp'] = new TimeoutConnector(
+                    $options['tcp'],
+                    $options['timeout'],
+                    $loop
+                );
+            }
+
+            $this->connectors['tcp'] = $options['tcp'];
+        }
+
+        if ($options['tls'] !== false) {
+            if (!$options['tls'] instanceof ConnectorInterface) {
+                $options['tls'] = new SecureConnector(
+                    $tcp,
+                    $loop,
+                    is_array($options['tls']) ? $options['tls'] : array()
+                );
+            }
+
+            if ($options['timeout'] !== false) {
+                $options['tls'] = new TimeoutConnector(
+                    $options['tls'],
+                    $options['timeout'],
+                    $loop
+                );
+            }
+
+            $this->connectors['tls'] = $options['tls'];
+        }
+
+        if ($options['unix'] !== false) {
+            if (!$options['unix'] instanceof ConnectorInterface) {
+                $options['unix'] = new UnixConnector($loop);
+            }
+            $this->connectors['unix'] = $options['unix'];
+        }
+    }
+
+    public function connect($uri)
+    {
+        $scheme = 'tcp';
+        if (strpos($uri, '://') !== false) {
+            $scheme = (string)substr($uri, 0, strpos($uri, '://'));
+        }
+
+        if (!isset($this->connectors[$scheme])) {
+            return Promise\reject(new RuntimeException(
+                'No connector available for URI scheme "' . $scheme . '"'
+            ));
+        }
+
+        return $this->connectors[$scheme]->connect($uri);
+    }
+}
+
diff --git a/assets/php/vendor/react/socket/src/ConnectorInterface.php b/assets/php/vendor/react/socket/src/ConnectorInterface.php
new file mode 100644
index 0000000..196d01a
--- /dev/null
+++ b/assets/php/vendor/react/socket/src/ConnectorInterface.php
@@ -0,0 +1,58 @@
+<?php
+
+namespace React\Socket;
+
+/**
+ * The `ConnectorInterface` is responsible for providing an interface for
+ * establishing streaming connections, such as a normal TCP/IP connection.
+ *
+ * This is the main interface defined in this package and it is used throughout
+ * React's vast ecosystem.
+ *
+ * Most higher-level components (such as HTTP, database or other networking
+ * service clients) accept an instance implementing this interface to create their
+ * TCP/IP connection to the underlying networking service.
+ * This is usually done via dependency injection, so it's fairly simple to actually
+ * swap this implementation against any other implementation of this interface.
+ *
+ * The interface only offers a single `connect()` method.
+ *
+ * @see ConnectionInterface
+ */
+interface ConnectorInterface
+{
+    /**
+     * Creates a streaming connection to the given remote address
+     *
+     * If returns a Promise which either fulfills with a stream implementing
+     * `ConnectionInterface` on success or rejects with an `Exception` if the
+     * connection is not successful.
+     *
+     * ```php
+     * $connector->connect('google.com:443')->then(
+     *     function (ConnectionInterface $connection) {
+     *         // connection successfully established
+     *     },
+     *     function (Exception $error) {
+     *         // failed to connect due to $error
+     *     }
+     * );
+     * ```
+     *
+     * The returned Promise MUST be implemented in such a way that it can be
+     * cancelled when it is still pending. Cancelling a pending promise MUST
+     * reject its value with an Exception. It SHOULD clean up any underlying
+     * resources and references as applicable.
+     *
+     * ```php
+     * $promise = $connector->connect($uri);
+     *
+     * $promise->cancel();
+     * ```
+     *
+     * @param string $uri
+     * @return \React\Promise\PromiseInterface resolves with a stream implementing ConnectionInterface on success or rejects with an Exception on error
+     * @see ConnectionInterface
+     */
+    public function connect($uri);
+}
diff --git a/assets/php/vendor/react/socket/src/DnsConnector.php b/assets/php/vendor/react/socket/src/DnsConnector.php
new file mode 100644
index 0000000..90170e5
--- /dev/null
+++ b/assets/php/vendor/react/socket/src/DnsConnector.php
@@ -0,0 +1,111 @@
+<?php
+
+namespace React\Socket;
+
+use React\Dns\Resolver\Resolver;
+use React\Promise;
+use React\Promise\CancellablePromiseInterface;
+use InvalidArgumentException;
+use RuntimeException;
+
+final class DnsConnector implements ConnectorInterface
+{
+    private $connector;
+    private $resolver;
+
+    public function __construct(ConnectorInterface $connector, Resolver $resolver)
+    {
+        $this->connector = $connector;
+        $this->resolver = $resolver;
+    }
+
+    public function connect($uri)
+    {
+        if (strpos($uri, '://') === false) {
+            $parts = parse_url('tcp://' . $uri);
+            unset($parts['scheme']);
+        } else {
+            $parts = parse_url($uri);
+        }
+
+        if (!$parts || !isset($parts['host'])) {
+            return Promise\reject(new InvalidArgumentException('Given URI "' . $uri . '" is invalid'));
+        }
+
+        $host = trim($parts['host'], '[]');
+        $connector = $this->connector;
+
+        return $this
+            ->resolveHostname($host)
+            ->then(function ($ip) use ($connector, $host, $parts) {
+                $uri = '';
+
+                // prepend original scheme if known
+                if (isset($parts['scheme'])) {
+                    $uri .= $parts['scheme'] . '://';
+                }
+
+                if (strpos($ip, ':') !== false) {
+                    // enclose IPv6 addresses in square brackets before appending port
+                    $uri .= '[' . $ip . ']';
+                } else {
+                    $uri .= $ip;
+                }
+
+                // append original port if known
+                if (isset($parts['port'])) {
+                    $uri .= ':' . $parts['port'];
+                }
+
+                // append orignal path if known
+                if (isset($parts['path'])) {
+                    $uri .= $parts['path'];
+                }
+
+                // append original query if known
+                if (isset($parts['query'])) {
+                    $uri .= '?' . $parts['query'];
+                }
+
+                // append original hostname as query if resolved via DNS and if
+                // destination URI does not contain "hostname" query param already
+                $args = array();
+                parse_str(isset($parts['query']) ? $parts['query'] : '', $args);
+                if ($host !== $ip && !isset($args['hostname'])) {
+                    $uri .= (isset($parts['query']) ? '&' : '?') . 'hostname=' . rawurlencode($host);
+                }
+
+                // append original fragment if known
+                if (isset($parts['fragment'])) {
+                    $uri .= '#' . $parts['fragment'];
+                }
+
+                return $connector->connect($uri);
+            });
+    }
+
+    private function resolveHostname($host)
+    {
+        if (false !== filter_var($host, FILTER_VALIDATE_IP)) {
+            return Promise\resolve($host);
+        }
+
+        $promise = $this->resolver->resolve($host);
+
+        return new Promise\Promise(
+            function ($resolve, $reject) use ($promise) {
+                // resolve/reject with result of DNS lookup
+                $promise->then($resolve, $reject);
+            },
+            function ($_, $reject) use ($promise) {
+                // cancellation should reject connection attempt
+                $reject(new RuntimeException('Connection attempt cancelled during DNS lookup'));
+
+                // (try to) cancel pending DNS lookup
+                if ($promise instanceof CancellablePromiseInterface) {
+                    $promise->cancel();
+                }
+            }
+        );
+    }
+}
diff --git a/assets/php/vendor/react/socket/src/FixedUriConnector.php b/assets/php/vendor/react/socket/src/FixedUriConnector.php
new file mode 100644
index 0000000..057bcdf
--- /dev/null
+++ b/assets/php/vendor/react/socket/src/FixedUriConnector.php
@@ -0,0 +1,41 @@
+<?php
+
+namespace React\Socket;
+
+/**
+ * Decorates an existing Connector to always use a fixed, preconfigured URI
+ *
+ * This can be useful for consumers that do not support certain URIs, such as
+ * when you want to explicitly connect to a Unix domain socket (UDS) path
+ * instead of connecting to a default address assumed by an higher-level API:
+ *
+ * ```php
+ * $connector = new FixedUriConnector(
+ *     'unix:///var/run/docker.sock',
+ *     new UnixConnector($loop)
+ * );
+ *
+ * // destination will be ignored, actually connects to Unix domain socket
+ * $promise = $connector->connect('localhost:80');
+ * ```
+ */
+class FixedUriConnector implements ConnectorInterface
+{
+    private $uri;
+    private $connector;
+
+    /**
+     * @param string $uri
+     * @param ConnectorInterface $connector
+     */
+    public function __construct($uri, ConnectorInterface $connector)
+    {
+        $this->uri = $uri;
+        $this->connector = $connector;
+    }
+
+    public function connect($_)
+    {
+        return $this->connector->connect($this->uri);
+    }
+}
diff --git a/assets/php/vendor/react/socket/src/LimitingServer.php b/assets/php/vendor/react/socket/src/LimitingServer.php
new file mode 100644
index 0000000..c7874ee
--- /dev/null
+++ b/assets/php/vendor/react/socket/src/LimitingServer.php
@@ -0,0 +1,203 @@
+<?php
+
+namespace React\Socket;
+
+use Evenement\EventEmitter;
+use Exception;
+use OverflowException;
+
+/**
+ * The `LimitingServer` decorator wraps a given `ServerInterface` and is responsible
+ * for limiting and keeping track of open connections to this server instance.
+ *
+ * Whenever the underlying server emits a `connection` event, it will check its
+ * limits and then either
+ * - keep track of this connection by adding it to the list of
+ *   open connections and then forward the `connection` event
+ * - or reject (close) the connection when its limits are exceeded and will
+ *   forward an `error` event instead.
+ *
+ * Whenever a connection closes, it will remove this connection from the list of
+ * open connections.
+ *
+ * ```php
+ * $server = new LimitingServer($server, 100);
+ * $server->on('connection', function (ConnectionInterface $connection) {
+ *     $connection->write('hello there!' . PHP_EOL);
+ *     …
+ * });
+ * ```
+ *
+ * See also the `ServerInterface` for more details.
+ *
+ * @see ServerInterface
+ * @see ConnectionInterface
+ */
+class LimitingServer extends EventEmitter implements ServerInterface
+{
+    private $connections = array();
+    private $server;
+    private $limit;
+
+    private $pauseOnLimit = false;
+    private $autoPaused = false;
+    private $manuPaused = false;
+
+    /**
+     * Instantiates a new LimitingServer.
+     *
+     * You have to pass a maximum number of open connections to ensure
+     * the server will automatically reject (close) connections once this limit
+     * is exceeded. In this case, it will emit an `error` event to inform about
+     * this and no `connection` event will be emitted.
+     *
+     * ```php
+     * $server = new LimitingServer($server, 100);
+     * $server->on('connection', function (ConnectionInterface $connection) {
+     *     $connection->write('hello there!' . PHP_EOL);
+     *     …
+     * });
+     * ```
+     *
+     * You MAY pass a `null` limit in order to put no limit on the number of
+     * open connections and keep accepting new connection until you run out of
+     * operating system resources (such as open file handles). This may be
+     * useful if you do not want to take care of applying a limit but still want
+     * to use the `getConnections()` method.
+     *
+     * You can optionally configure the server to pause accepting new
+     * connections once the connection limit is reached. In this case, it will
+     * pause the underlying server and no longer process any new connections at
+     * all, thus also no longer closing any excessive connections.
+     * The underlying operating system is responsible for keeping a backlog of
+     * pending connections until its limit is reached, at which point it will
+     * start rejecting further connections.
+     * Once the server is below the connection limit, it will continue consuming
+     * connections from the backlog and will process any outstanding data on
+     * each connection.
+     * This mode may be useful for some protocols that are designed to wait for
+     * a response message (such as HTTP), but may be less useful for other
+     * protocols that demand immediate responses (such as a "welcome" message in
+     * an interactive chat).
+     *
+     * ```php
+     * $server = new LimitingServer($server, 100, true);
+     * $server->on('connection', function (ConnectionInterface $connection) {
+     *     $connection->write('hello there!' . PHP_EOL);
+     *     …
+     * });
+     * ```
+     *
+     * @param ServerInterface $server
+     * @param int|null        $connectionLimit
+     * @param bool            $pauseOnLimit
+     */
+    public function __construct(ServerInterface $server, $connectionLimit, $pauseOnLimit = false)
+    {
+        $this->server = $server;
+        $this->limit = $connectionLimit;
+        if ($connectionLimit !== null) {
+            $this->pauseOnLimit = $pauseOnLimit;
+        }
+
+        $this->server->on('connection', array($this, 'handleConnection'));
+        $this->server->on('error', array($this, 'handleError'));
+    }
+
+    /**
+     * Returns an array with all currently active connections
+     *
+     * ```php
+     * foreach ($server->getConnection() as $connection) {
+     *     $connection->write('Hi!');
+     * }
+     * ```
+     *
+     * @return ConnectionInterface[]
+     */
+    public function getConnections()
+    {
+        return $this->connections;
+    }
+
+    public function getAddress()
+    {
+        return $this->server->getAddress();
+    }
+
+    public function pause()
+    {
+        if (!$this->manuPaused) {
+            $this->manuPaused = true;
+
+            if (!$this->autoPaused) {
+                $this->server->pause();
+            }
+        }
+    }
+
+    public function resume()
+    {
+        if ($this->manuPaused) {
+            $this->manuPaused = false;
+
+            if (!$this->autoPaused) {
+                $this->server->resume();
+            }
+        }
+    }
+
+    public function close()
+    {
+        $this->server->close();
+    }
+
+    /** @internal */
+    public function handleConnection(ConnectionInterface $connection)
+    {
+        // close connection if limit exceeded
+        if ($this->limit !== null && count($this->connections) >= $this->limit) {
+            $this->handleError(new OverflowException('Connection closed because server reached connection limit'));
+            $connection->close();
+            return;
+        }
+
+        $this->connections[] = $connection;
+        $that = $this;
+        $connection->on('close', function () use ($that, $connection) {
+            $that->handleDisconnection($connection);
+        });
+
+        // pause accepting new connections if limit exceeded
+        if ($this->pauseOnLimit && !$this->autoPaused && count($this->connections) >= $this->limit) {
+            $this->autoPaused = true;
+
+            if (!$this->manuPaused) {
+                $this->server->pause();
+            }
+        }
+
+        $this->emit('connection', array($connection));
+    }
+
+    /** @internal */
+    public function handleDisconnection(ConnectionInterface $connection)
+    {
+        unset($this->connections[array_search($connection, $this->connections)]);
+
+        // continue accepting new connection if below limit
+        if ($this->autoPaused && count($this->connections) < $this->limit) {
+            $this->autoPaused = false;
+
+            if (!$this->manuPaused) {
+                $this->server->resume();
+            }
+        }
+    }
+
+    /** @internal */
+    public function handleError(Exception $error)
+    {
+        $this->emit('error', array($error));
+    }
+}
diff --git a/assets/php/vendor/react/socket/src/SecureConnector.php b/assets/php/vendor/react/socket/src/SecureConnector.php
new file mode 100644
index 0000000..f04183d
--- /dev/null
+++ b/assets/php/vendor/react/socket/src/SecureConnector.php
@@ -0,0 +1,64 @@
+<?php
+
+namespace React\Socket;
+
+use React\EventLoop\LoopInterface;
+use React\Promise;
+use BadMethodCallException;
+use InvalidArgumentException;
+use UnexpectedValueException;
+
+final class SecureConnector implements ConnectorInterface
+{
+    private $connector;
+    private $streamEncryption;
+    private $context;
+
+    public function __construct(ConnectorInterface $connector, LoopInterface $loop, array $context = array())
+    {
+        $this->connector = $connector;
+        $this->streamEncryption = new StreamEncryption($loop, false);
+        $this->context = $context;
+    }
+
+    public function connect($uri)
+    {
+        if (!function_exists('stream_socket_enable_crypto')) {
+            return Promise\reject(new BadMethodCallException('Encryption not supported on your platform (HHVM < 3.8?)')); // @codeCoverageIgnore
+        }
+
+        if (strpos($uri, '://') === false) {
+            $uri = 'tls://' . $uri;
+        }
+
+        $parts = parse_url($uri);
+        if (!$parts || !isset($parts['scheme']) || $parts['scheme'] !== 'tls') {
+            return Promise\reject(new InvalidArgumentException('Given URI "' . $uri . '" is invalid'));
+        }
+
+        $uri = str_replace('tls://', '', $uri);
+        $context = $this->context;
+
+        $encryption = $this->streamEncryption;
+        return $this->connector->connect($uri)->then(function (ConnectionInterface $connection) use ($context, $encryption) {
+            // (unencrypted) TCP/IP connection succeeded
+
+            if (!$connection instanceof Connection) {
+                $connection->close();
+                throw new UnexpectedValueException('Base connector does not use internal Connection class exposing stream resource');
+            }
+
+            // set required SSL/TLS context options
+            foreach ($context as $name => $value) {
+                stream_context_set_option($connection->stream, 'ssl', $name, $value);
+            }
+
+            // try to enable encryption
+            return $encryption->enable($connection)->then(null, function ($error) use ($connection) {
+                // establishing encryption failed => close invalid connection and return error
+                $connection->close();
+                throw $error;
+            });
+        });
+    }
+}
diff --git a/assets/php/vendor/react/socket/src/SecureServer.php b/assets/php/vendor/react/socket/src/SecureServer.php
new file mode 100644
index 0000000..302ae93
--- /dev/null
+++ b/assets/php/vendor/react/socket/src/SecureServer.php
@@ -0,0 +1,192 @@
+<?php
+
+namespace React\Socket;
+
+use Evenement\EventEmitter;
+use React\EventLoop\LoopInterface;
+use BadMethodCallException;
+use UnexpectedValueException;
+
+/**
+ * The `SecureServer` class implements the `ServerInterface` and is responsible
+ * for providing a secure TLS (formerly known as SSL) server.
+ *
+ * It does so by wrapping a `TcpServer` instance which waits for plaintext
+ * TCP/IP connections and then performs a TLS handshake for each connection.
+ *
+ * ```php
+ * $server = new TcpServer(8000, $loop);
+ * $server = new SecureServer($server, $loop, array(
+ *     // tls context options here…
+ * ));
+ * ```
+ *
+ * Whenever a client completes the TLS handshake, it will emit a `connection` event
+ * with a connection instance implementing [`ConnectionInterface`](#connectioninterface):
+ *
+ * ```php
+ * $server->on('connection', function (ConnectionInterface $connection) {
+ *     echo 'Secure connection from' . $connection->getRemoteAddress() . PHP_EOL;
+ *
+ *     $connection->write('hello there!' . PHP_EOL);
+ *     …
+ * });
+ * ```
+ *
+ * Whenever a client fails to perform a successful TLS handshake, it will emit an
+ * `error` event and then close the underlying TCP/IP connection:
+ *
+ * ```php
+ * $server->on('error', function (Exception $e) {
+ *     echo 'Error' . $e->getMessage() . PHP_EOL;
+ * });
+ * ```
+ *
+ * See also the `ServerInterface` for more details.
+ *
+ * Note that the `SecureServer` class is a concrete implementation for TLS sockets.
+ * If you want to typehint in your higher-level protocol implementation, you SHOULD
+ * use the generic `ServerInterface` instead.
+ *
+ * @see ServerInterface
+ * @see ConnectionInterface
+ */
+final class SecureServer extends EventEmitter implements ServerInterface
+{
+    private $tcp;
+    private $encryption;
+    private $context;
+
+    /**
+     * Creates a secure TLS server and starts waiting for incoming connections
+     *
+     * It does so by wrapping a `TcpServer` instance which waits for plaintext
+     * TCP/IP connections and then performs a TLS handshake for each connection.
+     * It thus requires valid [TLS context options],
+     * which in its most basic form may look something like this if you're using a
+     * PEM encoded certificate file:
+     *
+     * ```php
+     * $server = new TcpServer(8000, $loop);
+     * $server = new SecureServer($server, $loop, array(
+     *     'local_cert' => 'server.pem'
+     * ));
+     * ```
+     *
+     * Note that the certificate file will not be loaded on instantiation but when an
+     * incoming connection initializes its TLS context.
+     * This implies that any invalid certificate file paths or contents will only cause
+     * an `error` event at a later time.
+     *
+     * If your private key is encrypted with a passphrase, you have to specify it
+     * like this:
+     *
+     * ```php
+     * $server = new TcpServer(8000, $loop);
+     * $server = new SecureServer($server, $loop, array(
+     *     'local_cert' => 'server.pem',
+     *     'passphrase' => 'secret'
+     * ));
+     * ```
+     *
+     * Note that available [TLS context options],
+     * their defaults and effects of changing these may vary depending on your system
+     * and/or PHP version.
+     * Passing unknown context options has no effect.
+     *
+     * Advanced usage: Despite allowing any `ServerInterface` as first parameter,
+     * you SHOULD pass a `TcpServer` instance as first parameter, unless you
+     * know what you're doing.
+     * Internally, the `SecureServer` has to set the required TLS context options on
+     * the underlying stream resources.
+     * These resources are not exposed through any of the interfaces defined in this
+     * package, but only through the internal `Connection` class.
+     * The `TcpServer` class is guaranteed to emit connections that implement
+     * the `ConnectionInterface` and uses the internal `Connection` class in order to
+     * expose these underlying resources.
+     * If you use a custom `ServerInterface` and its `connection` event does not
+     * meet this requirement, the `SecureServer` will emit an `error` event and
+     * then close the underlying connection.
+     *
+     * @param ServerInterface|TcpServer $tcp
+     * @param LoopInterface $loop
+     * @param array $context
+     * @throws BadMethodCallException for legacy HHVM < 3.8 due to lack of support
+     * @see TcpServer
+     * @link http://php.net/manual/en/context.ssl.php for TLS context options
+     */
+    public function __construct(ServerInterface $tcp, LoopInterface $loop, array $context)
+    {
+        if (!function_exists('stream_socket_enable_crypto')) {
+            throw new BadMethodCallException('Encryption not supported on your platform (HHVM < 3.8?)'); // @codeCoverageIgnore
+        }
+
+        // default to empty passphrase to suppress blocking passphrase prompt
+        $context += array(
+            'passphrase' => ''
+        );
+
+        $this->tcp = $tcp;
+        $this->encryption = new StreamEncryption($loop);
+        $this->context = $context;
+
+        $that = $this;
+        $this->tcp->on('connection', function ($connection) use ($that) {
+            $that->handleConnection($connection);
+        });
+        $this->tcp->on('error', function ($error) use ($that) {
+            $that->emit('error', array($error));
+        });
+    }
+
+    public function getAddress()
+    {
+        $address = $this->tcp->getAddress();
+        if ($address === null) {
+            return null;
+        }
+
+        return str_replace('tcp://' , 'tls://', $address);
+    }
+
+    public function pause()
+    {
+        $this->tcp->pause();
+    }
+
+    public function resume()
+    {
+        $this->tcp->resume();
+    }
+
+    public function close()
+    {
+        return $this->tcp->close();
+    }
+
+    /** @internal */
+    public function handleConnection(ConnectionInterface $connection)
+    {
+        if (!$connection instanceof Connection) {
+            $this->emit('error', array(new UnexpectedValueException('Base server does not use internal Connection class exposing stream resource')));
+            $connection->end();
+            return;
+        }
+
+        foreach ($this->context as $name => $value) {
+            stream_context_set_option($connection->stream, 'ssl', $name, $value);
+        }
+
+        $that = $this;
+
+        $this->encryption->enable($connection)->then(
+            function ($conn) use ($that) {
+                $that->emit('connection', array($conn));
+            },
+            function ($error) use ($that, $connection) {
+                $that->emit('error', array($error));
+                $connection->end();
+            }
+        );
+    }
+}
diff --git a/assets/php/vendor/react/socket/src/Server.php b/assets/php/vendor/react/socket/src/Server.php
new file mode 100644
index 0000000..72712e4
--- /dev/null
+++ b/assets/php/vendor/react/socket/src/Server.php
@@ -0,0 +1,73 @@
+<?php
+
+namespace React\Socket;
+
+use Evenement\EventEmitter;
+use React\EventLoop\LoopInterface;
+use Exception;
+
+final class Server extends EventEmitter implements ServerInterface
+{
+    private $server;
+
+    public function __construct($uri, LoopInterface $loop, array $context = array())
+    {
+        // sanitize TCP context options if not properly wrapped
+        if ($context && (!isset($context['tcp']) && !isset($context['tls']) && !isset($context['unix']))) {
+            $context = array('tcp' => $context);
+        }
+
+        // apply default options if not explicitly given
+        $context += array(
+            'tcp' => array(),
+            'tls' => array(),
+            'unix' => array()
+        );
+
+        $scheme = 'tcp';
+        $pos = strpos($uri, '://');
+        if ($pos !== false) {
+            $scheme = substr($uri, 0, $pos);
+        }
+
+        if ($scheme === 'unix') {
+            $server = new UnixServer($uri, $loop, $context['unix']);
+        } else {
+            $server = new TcpServer(str_replace('tls://', '', $uri), $loop, $context['tcp']);
+
+            if ($scheme === 'tls') {
+                $server = new SecureServer($server, $loop, $context['tls']);
+            }
+        }
+
+        $this->server = $server;
+
+        $that = $this;
+        $server->on('connection', function (ConnectionInterface $conn) use ($that) {
+            $that->emit('connection', array($conn));
+        });
+        $server->on('error', function (Exception $error) use ($that) {
+            $that->emit('error', array($error));
+        });
+    }
+
+    public function getAddress()
+    {
+        return $this->server->getAddress();
+    }
+
+    public function pause()
+    {
+        $this->server->pause();
+    }
+
+    public function resume()
+    {
+        $this->server->resume();
+    }
+
+    public function close()
+    {
+        $this->server->close();
+    }
+}
diff --git a/assets/php/vendor/react/socket/src/ServerInterface.php b/assets/php/vendor/react/socket/src/ServerInterface.php
new file mode 100644
index 0000000..5319678
--- /dev/null
+++ b/assets/php/vendor/react/socket/src/ServerInterface.php
@@ -0,0 +1,151 @@
+<?php
+
+namespace React\Socket;
+
+use Evenement\EventEmitterInterface;
+
+/**
+ * The `ServerInterface` is responsible for providing an interface for accepting
+ * incoming streaming connections, such as a normal TCP/IP connection.
+ *
+ * Most higher-level components (such as a HTTP server) accept an instance
+ * implementing this interface to accept incoming streaming connections.
+ * This is usually done via dependency injection, so it's fairly simple to actually
+ * swap this implementation against any other implementation of this interface.
+ * This means that you SHOULD typehint against this interface instead of a concrete
+ * implementation of this interface.
+ *
+ * Besides defining a few methods, this interface also implements the
+ * `EventEmitterInterface` which allows you to react to certain events:
+ *
+ * connection event:
+ *     The `connection` event will be emitted whenever a new connection has been
+ *     established, i.e. a new client connects to this server socket:
+ *
+ *     ```php
+ *     $server->on('connection', function (ConnectionInterface $connection) {
+ *         echo 'new connection' . PHP_EOL;
+ *     });
+ *     ```
+ *
+ *     See also the `ConnectionInterface` for more details about handling the
+ *     incoming connection.
+ *
+ * error event:
+ *     The `error` event will be emitted whenever there's an error accepting a new
+ *     connection from a client.
+ *
+ *     ```php
+ *     $server->on('error', function (Exception $e) {
+ *         echo 'error: ' . $e->getMessage() . PHP_EOL;
+ *     });
+ *     ```
+ *
+ *     Note that this is not a fatal error event, i.e. the server keeps listening for
+ *     new connections even after this event.
+ *
+ * @see ConnectionInterface
+ */
+interface ServerInterface extends EventEmitterInterface
+{
+    /**
+     * Returns the full address (URI) this server is currently listening on
+     *
+     * ```php
+     * $address = $server->getAddress();
+     * echo 'Server listening on ' . $address . PHP_EOL;
+     * ```
+     *
+     * If the address can not be determined or is unknown at this time (such as
+     * after the socket has been closed), it MAY return a `NULL` value instead.
+     *
+     * Otherwise, it will return the full address (URI) as a string value, such
+     * as `tcp://127.0.0.1:8080`, `tcp://[::1]:80` or `tls://127.0.0.1:443`.
+     * Note that individual URI components are application specific and depend
+     * on the underlying transport protocol.
+     *
+     * If this is a TCP/IP based server and you only want the local port, you may
+     * use something like this:
+     *
+     * ```php
+     * $address = $server->getAddress();
+     * $port = parse_url($address, PHP_URL_PORT);
+     * echo 'Server listening on port ' . $port . PHP_EOL;
+     * ```
+     *
+     * @return ?string the full listening address (URI) or NULL if it is unknown (not applicable to this server socket or already closed)
+     */
+    public function getAddress();
+
+    /**
+     * Pauses accepting new incoming connections.
+     *
+     * Removes the socket resource from the EventLoop and thus stop accepting
+     * new connections. Note that the listening socket stays active and is not
+     * closed.
+     *
+     * This means that new incoming connections will stay pending in the
+     * operating system backlog until its configurable backlog is filled.
+     * Once the backlog is filled, the operating system may reject further
+     * incoming connections until the backlog is drained again by resuming
+     * to accept new connections.
+     *
+     * Once the server is paused, no futher `connection` events SHOULD
+     * be emitted.
+     *
+     * ```php
+     * $server->pause();
+     *
+     * $server->on('connection', assertShouldNeverCalled());
+     * ```
+     *
+     * This method is advisory-only, though generally not recommended, the
+     * server MAY continue emitting `connection` events.
+     *
+     * Unless otherwise noted, a successfully opened server SHOULD NOT start
+     * in paused state.
+     *
+     * You can continue processing events by calling `resume()` again.
+     *
+     * Note that both methods can be called any number of times, in particular
+     * calling `pause()` more than once SHOULD NOT have any effect.
+     * Similarly, calling this after `close()` is a NO-OP.
+     *
+     * @see self::resume()
+     * @return void
+     */
+    public function pause();
+
+    /**
+     * Resumes accepting new incoming connections.
+     *
+     * Re-attach the socket resource to the EventLoop after a previous `pause()`.
+     *
+     * ```php
+     * $server->pause();
+     *
+     * $loop->addTimer(1.0, function () use ($server) {
+     *     $server->resume();
+     * });
+     * ```
+     *
+     * Note that both methods can be called any number of times, in particular
+     * calling `resume()` without a prior `pause()` SHOULD NOT have any effect.
+     * Similarly, calling this after `close()` is a NO-OP.
+     *
+     * @see self::pause()
+     * @return void
+     */
+    public function resume();
+
+    /**
+     * Shuts down this listening socket
+     *
+     * This will stop listening for new incoming connections on this socket.
+     *
+     * Calling this method more than once on the same instance is a NO-OP.
+     *
+     * @return void
+     */
+    public function close();
+}
diff --git a/assets/php/vendor/react/socket/src/StreamEncryption.php b/assets/php/vendor/react/socket/src/StreamEncryption.php
new file mode 100644
index 0000000..ba5d472
--- /dev/null
+++ b/assets/php/vendor/react/socket/src/StreamEncryption.php
@@ -0,0 +1,146 @@
+<?php
+
+namespace React\Socket;
+
+use React\EventLoop\LoopInterface;
+use React\Promise\Deferred;
+use RuntimeException;
+use UnexpectedValueException;
+
+/**
+ * This class is considered internal and its API should not be relied upon
+ * outside of Socket.
+ *
+ * @internal
+ */
+class StreamEncryption
+{
+    private $loop;
+    private $method;
+    private $server;
+
+    private $errstr;
+    private $errno;
+
+    public function __construct(LoopInterface $loop, $server = true)
+    {
+        $this->loop = $loop;
+        $this->server = $server;
+
+        // support TLSv1.0+ by default and exclude legacy SSLv2/SSLv3.
+        // PHP 5.6+ supports bitmasks, legacy PHP only supports predefined
+        // constants, so apply accordingly below.
+        // Also, since PHP 5.6.7 up until before PHP 7.2.0 the main constant did
+        // only support TLSv1.0, so we explicitly apply all versions.
+        // @link http://php.net/manual/en/migration56.openssl.php#migration56.openssl.crypto-method
+        // @link https://3v4l.org/plbFn
+        if ($server) {
+            $this->method = STREAM_CRYPTO_METHOD_TLS_SERVER;
+
+            if (defined('STREAM_CRYPTO_METHOD_TLSv1_0_SERVER')) {
+                $this->method |= STREAM_CRYPTO_METHOD_TLSv1_0_SERVER;
+            }
+            if (defined('STREAM_CRYPTO_METHOD_TLSv1_1_SERVER')) {
+                $this->method |= STREAM_CRYPTO_METHOD_TLSv1_1_SERVER;
+            }
+            if (defined('STREAM_CRYPTO_METHOD_TLSv1_2_SERVER')) {
+                $this->method |= STREAM_CRYPTO_METHOD_TLSv1_2_SERVER;
+            }
+        } else {
+            $this->method = STREAM_CRYPTO_METHOD_TLS_CLIENT;
+
+            if (defined('STREAM_CRYPTO_METHOD_TLSv1_0_CLIENT')) {
+                $this->method |= STREAM_CRYPTO_METHOD_TLSv1_0_CLIENT;
+            }
+            if (defined('STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT')) {
+                $this->method |= STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT;
+            }
+            if (defined('STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT')) {
+                $this->method |= STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT;
+            }
+        }
+    }
+
+    public function enable(Connection $stream)
+    {
+        return $this->toggle($stream, true);
+    }
+
+    public function disable(Connection $stream)
+    {
+        return $this->toggle($stream, false);
+    }
+
+    public function toggle(Connection $stream, $toggle)
+    {
+        // pause actual stream instance to continue operation on raw stream socket
+        $stream->pause();
+
+        // TODO: add write() event to make sure we're not sending any excessive data
+
+        $deferred = new Deferred(function ($_, $reject) use ($toggle) {
+            // cancelling this leaves this stream in an inconsistent state…
+            $reject(new RuntimeException('Cancelled toggling encryption ' . $toggle ? 'on' : 'off'));
+        });
+
+        // get actual stream socket from stream instance
+        $socket = $stream->stream;
+
+        // get crypto method from context options or use global setting from constructor
+        $method = $this->method;
+        $context = stream_context_get_options($socket);
+        if (isset($context['ssl']['crypto_method'])) {
+            $method = $context['ssl']['crypto_method'];
+        }
+
+        $that = $this;
+        $toggleCrypto = function () use ($socket, $deferred, $toggle, $method, $that) {
+            $that->toggleCrypto($socket, $deferred, $toggle, $method);
+        };
+
+        $this->loop->addReadStream($socket, $toggleCrypto);
+
+        if (!$this->server) {
+            $toggleCrypto();
+        }
+
+        $loop = $this->loop;
+
+        return $deferred->promise()->then(function () use ($stream, $socket, $loop, $toggle) {
+            $loop->removeReadStream($socket);
+
+            $stream->encryptionEnabled = $toggle;
+            $stream->resume();
+
+            return $stream;
+        }, function($error) use ($stream, $socket, $loop) {
+            $loop->removeReadStream($socket);
+            $stream->resume();
+            throw $error;
+        });
+    }
+
+    public function toggleCrypto($socket, Deferred $deferred, $toggle, $method)
+    {
+        set_error_handler(array($this, 'handleError'));
+        $result = stream_socket_enable_crypto($socket, $toggle, $method);
+        restore_error_handler();
+
+        if (true === $result) {
+            $deferred->resolve();
+        } else if (false === $result) {
+            $deferred->reject(new UnexpectedValueException(
+                sprintf("Unable to complete SSL/TLS handshake: %s", $this->errstr),
+                $this->errno
+            ));
+        } else {
+            // need more data, will retry
+        }
+    }
+
+    public function handleError($errno, $errstr)
+    {
+        $this->errstr = str_replace(array("\r", "\n"), ' ', $errstr);
+        $this->errno  = $errno;
+    }
+}
diff --git a/assets/php/vendor/react/socket/src/TcpConnector.php b/assets/php/vendor/react/socket/src/TcpConnector.php
new file mode 100644
index 0000000..90d7df1
--- /dev/null
+++ b/assets/php/vendor/react/socket/src/TcpConnector.php
@@ -0,0 +1,122 @@
+<?php
+
+namespace React\Socket;
+
+use React\EventLoop\LoopInterface;
+use React\Promise;
+use InvalidArgumentException;
+use RuntimeException;
+
+final class TcpConnector implements ConnectorInterface
+{
+    private $loop;
+    private $context;
+
+    public function __construct(LoopInterface $loop, array $context = array())
+    {
+        $this->loop = $loop;
+        $this->context = $context;
+    }
+
+    public function connect($uri)
+    {
+        if (strpos($uri, '://') === false) {
+            $uri = 'tcp://' . $uri;
+        }
+
+        $parts = parse_url($uri);
+        if (!$parts || !isset($parts['scheme'], $parts['host'], $parts['port']) || $parts['scheme'] !== 'tcp') {
+            return Promise\reject(new InvalidArgumentException('Given URI "' . $uri . '" is invalid'));
+        }
+
+        $ip = trim($parts['host'], '[]');
+        if (false === filter_var($ip, FILTER_VALIDATE_IP)) {
+            return Promise\reject(new InvalidArgumentException('Given URI "' . $ip . '" does not contain a valid host IP'));
+        }
+
+        // use context given in constructor
+        $context = array(
+            'socket' => $this->context
+        );
+
+        // parse arguments from query component of URI
+        $args = array();
+        if (isset($parts['query'])) {
+            parse_str($parts['query'], $args);
+        }
+
+        // If an original hostname has been given, use this for TLS setup.
+        // This can happen due to layers of nested connectors, such as a
+        // DnsConnector reporting its original hostname.
+        // These context options are here in case TLS is enabled later on this stream.
+        // If TLS is not enabled later, this doesn't hurt either.
+        if (isset($args['hostname'])) {
+            $context['ssl'] = array(
+                'SNI_enabled' => true,
+                'peer_name' => $args['hostname']
+            );
+
+            // Legacy PHP < 5.6 ignores peer_name and requires legacy context options instead.
+            // The SNI_server_name context option has to be set here during construction,
+            // as legacy PHP ignores any values set later.
+            if (PHP_VERSION_ID < 50600) {
+                $context['ssl'] += array(
+                    'SNI_server_name' => $args['hostname'],
+                    'CN_match' => $args['hostname']
+                );
+            }
+        }
+
+        // latest versions of PHP no longer accept any other URI components and
+        // HHVM fails to parse URIs with a query but no path, so let's simplify our URI here
+        $remote = 'tcp://' . $parts['host'] . ':' . $parts['port'];
+
+        $socket = @stream_socket_client(
+            $remote,
+            $errno,
+            $errstr,
+            0,
+            STREAM_CLIENT_CONNECT | STREAM_CLIENT_ASYNC_CONNECT,
+            stream_context_create($context)
+        );
+
+        if (false === $socket) {
+            return Promise\reject(new RuntimeException(
+                sprintf("Connection to %s failed: %s", $uri, $errstr),
+                $errno
+            ));
+        }
+
+        stream_set_blocking($socket, 0);
+
+        // wait for connection
+
+        return $this->waitForStreamOnce($socket);
+    }
+
+    private function waitForStreamOnce($stream)
+    {
+        $loop = $this->loop;
+
+        return new Promise\Promise(function ($resolve, $reject) use ($loop, $stream) {
+            $loop->addWriteStream($stream, function ($stream) use ($loop, $resolve, $reject) {
+                $loop->removeWriteStream($stream);
+
+                // The following hack looks like the only way to
+                // detect connection refused errors with PHP's stream sockets.
+                if (false === stream_socket_get_name($stream, true)) {
+                    fclose($stream);
+
+                    $reject(new RuntimeException('Connection refused'));
+                } else {
+                    $resolve(new Connection($stream, $loop));
+                }
+            });
+        }, function () use ($loop, $stream) {
+            $loop->removeWriteStream($stream);
+            fclose($stream);
+
+            throw new RuntimeException('Cancelled while waiting for TCP/IP connection to be established');
+        });
+    }
+}
diff --git a/assets/php/vendor/react/socket/src/TcpServer.php b/assets/php/vendor/react/socket/src/TcpServer.php
new file mode 100644
index 0000000..119e177
--- /dev/null
+++ b/assets/php/vendor/react/socket/src/TcpServer.php
@@ -0,0 +1,236 @@
+<?php
+
+namespace React\Socket;
+
+use Evenement\EventEmitter;
+use React\EventLoop\LoopInterface;
+use InvalidArgumentException;
+use RuntimeException;
+
+/**
+ * The `TcpServer` class implements the `ServerInterface` and
+ * is responsible for accepting plaintext TCP/IP connections.
+ *
+ * ```php
+ * $server = new TcpServer(8080, $loop);
+ * ```
+ *
+ * Whenever a client connects, it will emit a `connection` event with a connection
+ * instance implementing `ConnectionInterface`:
+ *
+ * ```php
+ * $server->on('connection', function (ConnectionInterface $connection) {
+ *     echo 'Plaintext connection from ' . $connection->getRemoteAddress() . PHP_EOL;
+ *     $connection->write('hello there!' . PHP_EOL);
+ *     …
+ * });
+ * ```
+ *
+ * See also the `ServerInterface` for more details.
+ *
+ * @see ServerInterface
+ * @see ConnectionInterface
+ */
+final class TcpServer extends EventEmitter implements ServerInterface
+{
+    private $master;
+    private $loop;
+    private $listening = false;
+
+    /**
+     * Creates a plaintext TCP/IP socket server and starts listening on the given address
+     *
+     * This starts accepting new incoming connections on the given address.
+     * See also the `connection event` documented in the `ServerInterface`
+     * for more details.
+     *
+     * ```php
+     * $server = new TcpServer(8080, $loop);
+     * ```
+     *
+     * As above, the `$uri` parameter can consist of only a port, in which case the
+     * server will default to listening on the localhost address `127.0.0.1`,
+     * which means it will not be reachable from outside of this system.
+     *
+     * In order to use a random port assignment, you can use the port `0`:
+     *
+     * ```php
+     * $server = new TcpServer(0, $loop);
+     * $address = $server->getAddress();
+     * ```
+     *
+     * In order to change the host the socket is listening on, you can provide an IP
+     * address through the first parameter provided to the constructor, optionally
+     * preceded by the `tcp://` scheme:
+     *
+     * ```php
+     * $server = new TcpServer('192.168.0.1:8080', $loop);
+     * ```
+     *
+     * If you want to listen on an IPv6 address, you MUST enclose the host in square
+     * brackets:
+     *
+     * ```php
+     * $server = new TcpServer('[::1]:8080', $loop);
+     * ```
+     *
+     * If the given URI is invalid, does not contain a port, any other scheme or if it
+     * contains a hostname, it will throw an `InvalidArgumentException`:
+     *
+     * ```php
+     * // throws InvalidArgumentException due to missing port
+     * $server = new TcpServer('127.0.0.1', $loop);
+     * ```
+     *
+     * If the given URI appears to be valid, but listening on it fails (such as if port
+     * is already in use or port below 1024 may require root access etc.), it will
+     * throw a `RuntimeException`:
+     *
+     * ```php
+     * $first = new TcpServer(8080, $loop);
+     *
+     * // throws RuntimeException because port is already in use
+     * $second = new TcpServer(8080, $loop);
+     * ```
+     *
+     * Note that these error conditions may vary depending on your system and/or
+     * configuration.
+     * See the exception message and code for more details about the actual error
+     * condition.
+     *
+     * Optionally, you can specify [socket context options](http://php.net/manual/en/context.socket.php)
+     * for the underlying stream socket resource like this:
+     *
+     * ```php
+     * $server = new TcpServer('[::1]:8080', $loop, array(
+     *     'backlog' => 200,
+     *     'so_reuseport' => true,
+     *     'ipv6_v6only' => true
+     * ));
+     * ```
+     *
+     * Note that available [socket context options](http://php.net/manual/en/context.socket.php),
+     * their defaults and effects of changing these may vary depending on your system
+     * and/or PHP version.
+     * Passing unknown context options has no effect.
+     *
+     * @param string|int    $uri
+     * @param LoopInterface $loop
+     * @param array         $context
+     * @throws InvalidArgumentException if the listening address is invalid
+     * @throws RuntimeException if listening on this address fails (already in use etc.)
+     */
+    public function __construct($uri, LoopInterface $loop, array $context = array())
+    {
+        $this->loop = $loop;
+
+        // a single port has been given => assume localhost
+        if ((string)(int)$uri === (string)$uri) {
+            $uri = '127.0.0.1:' . $uri;
+        }
+
+        // assume default scheme if none has been given
+        if (strpos($uri, '://') === false) {
+            $uri = 'tcp://' . $uri;
+        }
+
+        // parse_url() does not accept null ports (random port assignment) => manually remove
+        if (substr($uri, -2) === ':0') {
+            $parts = parse_url(substr($uri, 0, -2));
+            if ($parts) {
+                $parts['port'] = 0;
+            }
+        } else {
+            $parts = parse_url($uri);
+        }
+
+        // ensure URI contains TCP scheme, host and port
+        if (!$parts || !isset($parts['scheme'], $parts['host'], $parts['port']) || $parts['scheme'] !== 'tcp') {
+            throw new InvalidArgumentException('Invalid URI "' . $uri . '" given');
+        }
+
+        if (false === filter_var(trim($parts['host'], '[]'), FILTER_VALIDATE_IP)) {
+            throw new InvalidArgumentException('Given URI "' . $uri . '" does not contain a valid host IP');
+        }
+
+        $this->master = @stream_socket_server(
+            $uri,
+            $errno,
+            $errstr,
+            STREAM_SERVER_BIND | STREAM_SERVER_LISTEN,
+            stream_context_create(array('socket' => $context))
+        );
+        if (false === $this->master) {
+            throw new RuntimeException('Failed to listen on "' . $uri . '": ' . $errstr, $errno);
+        }
+        stream_set_blocking($this->master, 0);
+
+        $this->resume();
+    }
+
+    public function getAddress()
+    {
+        if (!is_resource($this->master)) {
+            return null;
+        }
+
+        $address = stream_socket_get_name($this->master, false);
+
+        // check if this is an IPv6 address which includes multiple colons but no square brackets
+        $pos = strrpos($address, ':');
+        if ($pos !== false && strpos($address, ':') < $pos && substr($address, 0, 1) !== '[') {
+            $port = substr($address, $pos + 1);
+            $address = '[' . substr($address, 0, $pos) . ']:' . $port;
+        }
+
+        return 'tcp://' . $address;
+    }
+
+    public function pause()
+    {
+        if (!$this->listening) {
+            return;
+        }
+
+        $this->loop->removeReadStream($this->master);
+        $this->listening = false;
+    }
+
+    public function resume()
+    {
+        if ($this->listening || !is_resource($this->master)) {
+            return;
+        }
+
+        $that = $this;
+        $this->loop->addReadStream($this->master, function ($master) use ($that) {
+            $newSocket = @stream_socket_accept($master);
+            if (false === $newSocket) {
+                $that->emit('error', array(new RuntimeException('Error accepting new connection')));
+
+                return;
+            }
+            $that->handleConnection($newSocket);
+        });
+        $this->listening = true;
+    }
+
+    public function close()
+    {
+        if (!is_resource($this->master)) {
+            return;
+        }
+
+        $this->pause();
+        fclose($this->master);
+        $this->removeAllListeners();
+    }
+
+    /** @internal */
+    public function handleConnection($socket)
+    {
+        $this->emit('connection', array(
+            new Connection($socket, $this->loop)
+        ));
+    }
+}
diff --git a/assets/php/vendor/react/socket/src/TimeoutConnector.php b/assets/php/vendor/react/socket/src/TimeoutConnector.php
new file mode 100644
index 0000000..d4eba2e
--- /dev/null
+++ b/assets/php/vendor/react/socket/src/TimeoutConnector.php
@@ -0,0 +1,25 @@
+<?php
+
+namespace React\Socket;
+
+use React\EventLoop\LoopInterface;
+use React\Promise\Timer;
+
+final class TimeoutConnector implements ConnectorInterface
+{
+    private $connector;
+    private $timeout;
+    private $loop;
+
+    public function __construct(ConnectorInterface $connector, $timeout, LoopInterface $loop)
+    {
+        $this->connector = $connector;
+        $this->timeout = $timeout;
+        $this->loop = $loop;
+    }
+
+    public function connect($uri)
+    {
+        return Timer\timeout($this->connector->connect($uri), $this->timeout, $this->loop);
+    }
+}
diff --git a/assets/php/vendor/react/socket/src/UnixConnector.php b/assets/php/vendor/react/socket/src/UnixConnector.php
new file mode 100644
index 0000000..9b84ab0
--- /dev/null
+++ b/assets/php/vendor/react/socket/src/UnixConnector.php
@@ -0,0 +1,44 @@
+<?php
+
+namespace React\Socket;
+
+use React\EventLoop\LoopInterface;
+use React\Promise;
+use InvalidArgumentException;
+use RuntimeException;
+
+/**
+ * Unix domain socket connector
+ *
+ * Unix domain sockets use atomic operations, so we can as well emulate
+ * async behavior.
+ */
+final class UnixConnector implements ConnectorInterface
+{
+    private $loop;
+
+    public function __construct(LoopInterface $loop)
+    {
+        $this->loop = $loop;
+    }
+
+    public function connect($path)
+    {
+        if (strpos($path, '://') === false) {
+            $path = 'unix://' . $path;
+        } elseif (substr($path, 0, 7) !== 'unix://') {
+            return Promise\reject(new InvalidArgumentException('Given URI "' . $path . '" is invalid'));
+        }
+
+        $resource = @stream_socket_client($path, $errno, $errstr, 1.0);
+
+        if (!$resource) {
+            return Promise\reject(new RuntimeException('Unable to connect to unix domain socket "' . $path . '": ' . $errstr, $errno));
+        }
+
+        $connection = new Connection($resource, $this->loop);
+        $connection->unix = true;
+
+        return Promise\resolve($connection);
+    }
+}
diff --git a/assets/php/vendor/react/socket/src/UnixServer.php b/assets/php/vendor/react/socket/src/UnixServer.php
new file mode 100644
index 0000000..8f1ed98
--- /dev/null
+++ b/assets/php/vendor/react/socket/src/UnixServer.php
@@ -0,0 +1,130 @@
+<?php
+
+namespace React\Socket;
+
+use Evenement\EventEmitter;
+use React\EventLoop\LoopInterface;
+use InvalidArgumentException;
+use RuntimeException;
+
+/**
+ * The `UnixServer` class implements the `ServerInterface` and
+ * is responsible for accepting plaintext connections on unix domain sockets.
+ *
+ * ```php
+ * $server = new UnixServer('unix:///tmp/app.sock', $loop);
+ * ```
+ *
+ * See also the `ServerInterface` for more details.
+ *
+ * @see ServerInterface
+ * @see ConnectionInterface
+ */
+final class UnixServer extends EventEmitter implements ServerInterface
+{
+    private $master;
+    private $loop;
+    private $listening = false;
+
+    /**
+     * Creates a plaintext socket server and starts listening on the given unix socket
+     *
+     * This starts accepting new incoming connections on the given address.
+     * See also the `connection event` documented in the `ServerInterface`
+     * for more details.
+     *
+     * ```php
+     * $server = new UnixServer('unix:///tmp/app.sock', $loop);
+     * ```
+     *
+     * @param string        $path
+     * @param LoopInterface $loop
+     * @param array         $context
+     * @throws InvalidArgumentException if the listening address is invalid
+     * @throws RuntimeException if listening on this address fails (already in use etc.)
+     */
+    public function __construct($path, LoopInterface $loop, array $context = array())
+    {
+        $this->loop = $loop;
+
+        if (strpos($path, '://') === false) {
+            $path = 'unix://' . $path;
+        } elseif (substr($path, 0, 7) !== 'unix://') {
+            throw new InvalidArgumentException('Given URI "' . $path . '" is invalid');
+        }
+
+        $this->master = @stream_socket_server(
+            $path,
+            $errno,
+            $errstr,
+            STREAM_SERVER_BIND | STREAM_SERVER_LISTEN,
+            stream_context_create(array('socket' => $context))
+        );
+        if (false === $this->master) {
+            throw new RuntimeException('Failed to listen on unix domain socket "' . $path . '": ' . $errstr, $errno);
+        }
+        stream_set_blocking($this->master, 0);
+
+        $this->resume();
+    }
+
+    public function getAddress()
+    {
+        if (!is_resource($this->master)) {
+            return null;
+        }
+
+        return 'unix://' . stream_socket_get_name($this->master, false);
+    }
+
+    public function pause()
+    {
+        if (!$this->listening) {
+            return;
+        }
+
+        $this->loop->removeReadStream($this->master);
+        $this->listening = false;
+    }
+
+    public function resume()
+    {
+        if ($this->listening || !is_resource($this->master)) {
+            return;
+        }
+
+        $that = $this;
+        $this->loop->addReadStream($this->master, function ($master) use ($that) {
+            $newSocket = @stream_socket_accept($master);
+            if (false === $newSocket) {
+                $that->emit('error', array(new RuntimeException('Error accepting new connection')));
+
+                return;
+            }
+            $that->handleConnection($newSocket);
+        });
+        $this->listening = true;
+    }
+
+    public function close()
+    {
+        if (!is_resource($this->master)) {
+            return;
+        }
+
+        $this->pause();
+        fclose($this->master);
+        $this->removeAllListeners();
+    }
+
+    /** @internal */
+    public function handleConnection($socket)
+    {
+        $connection = new Connection($socket, $this->loop);
+        $connection->unix = true;
+
+        $this->emit('connection', array(
+            $connection
+        ));
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/ConnectionTest.php b/assets/php/vendor/react/socket/tests/ConnectionTest.php
new file mode 100644
index 0000000..d3563df
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/ConnectionTest.php
@@ -0,0 +1,47 @@
+<?php
+
+namespace React\Tests\Socket;
+
+use React\Socket\Connection;
+
+class ConnectionTest extends TestCase
+{
+    public function testCloseConnectionWillCloseSocketResource()
+    {
+        if (defined('HHVM_VERSION')) {
+            $this->markTestSkipped('HHVM does not support socket operation on test memory stream');
+        }
+
+        $resource = fopen('php://memory', 'r+');
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $connection = new Connection($resource, $loop);
+        $connection->close();
+
+        $this->assertFalse(is_resource($resource));
+    }
+
+    public function testCloseConnectionWillRemoveResourceFromLoopBeforeClosingResource()
+    {
+        if (defined('HHVM_VERSION')) {
+            $this->markTestSkipped('HHVM does not support socket operation on test memory stream');
+        }
+
+        $resource = fopen('php://memory', 'r+');
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('addWriteStream')->with($resource);
+
+        $onRemove = null;
+        $loop->expects($this->once())->method('removeWriteStream')->with($this->callback(function ($param) use (&$onRemove) {
+            $onRemove = is_resource($param);
+            return true;
+        }));
+
+        $connection = new Connection($resource, $loop);
+        $connection->write('test');
+        $connection->close();
+
+        $this->assertTrue($onRemove);
+        $this->assertFalse(is_resource($resource));
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/ConnectorTest.php b/assets/php/vendor/react/socket/tests/ConnectorTest.php
new file mode 100644
index 0000000..c8eb19b
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/ConnectorTest.php
@@ -0,0 +1,128 @@
+<?php
+
+namespace React\Tests\Socket;
+
+use React\Socket\Connector;
+use React\Promise\Promise;
+
+class ConnectorTest extends TestCase
+{
+    public function testConnectorUsesTcpAsDefaultScheme()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $promise = new Promise(function () { });
+        $tcp = $this->getMockBuilder('React\Socket\ConnectorInterface')->getMock();
+        $tcp->expects($this->once())->method('connect')->with('127.0.0.1:80')->willReturn($promise);
+
+        $connector = new Connector($loop, array(
+            'tcp' => $tcp
+        ));
+
+        $connector->connect('127.0.0.1:80');
+    }
+
+    public function testConnectorPassedThroughHostnameIfDnsIsDisabled()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $promise = new Promise(function () { });
+        $tcp = $this->getMockBuilder('React\Socket\ConnectorInterface')->getMock();
+        $tcp->expects($this->once())->method('connect')->with('tcp://google.com:80')->willReturn($promise);
+
+        $connector = new Connector($loop, array(
+            'tcp' => $tcp,
+            'dns' => false
+        ));
+
+        $connector->connect('tcp://google.com:80');
+    }
+
+    public function testConnectorWithUnknownSchemeAlwaysFails()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $connector = new Connector($loop);
+
+        $promise = $connector->connect('unknown://google.com:80');
+        $promise->then(null, $this->expectCallableOnce());
+    }
+
+    public function testConnectorWithDisabledTcpDefaultSchemeAlwaysFails()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $connector = new Connector($loop, array(
+            'tcp' => false
+        ));
+
+        $promise = $connector->connect('google.com:80');
+        $promise->then(null, $this->expectCallableOnce());
+    }
+
+    public function testConnectorWithDisabledTcpSchemeAlwaysFails()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $connector = new Connector($loop, array(
+            'tcp' => false
+        ));
+
+        $promise = $connector->connect('tcp://google.com:80');
+        $promise->then(null, $this->expectCallableOnce());
+    }
+
+    public function testConnectorWithDisabledTlsSchemeAlwaysFails()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $connector = new Connector($loop, array(
+            'tls' => false
+        ));
+
+        $promise = $connector->connect('tls://google.com:443');
+        $promise->then(null, $this->expectCallableOnce());
+    }
+
+    public function testConnectorWithDisabledUnixSchemeAlwaysFails()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $connector = new Connector($loop, array(
+            'unix' => false
+        ));
+
+        $promise = $connector->connect('unix://demo.sock');
+        $promise->then(null, $this->expectCallableOnce());
+    }
+
+    public function testConnectorUsesGivenResolverInstance()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $promise = new Promise(function () { });
+        $resolver = $this->getMockBuilder('React\Dns\Resolver\Resolver')->disableOriginalConstructor()->getMock();
+        $resolver->expects($this->once())->method('resolve')->with('google.com')->willReturn($promise);
+
+        $connector = new Connector($loop, array(
+            'dns' => $resolver
+        ));
+
+        $connector->connect('google.com:80');
+    }
+
+    public function testConnectorUsesResolvedHostnameIfDnsIsUsed()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $promise = new Promise(function ($resolve) { $resolve('127.0.0.1'); });
+        $resolver = $this->getMockBuilder('React\Dns\Resolver\Resolver')->disableOriginalConstructor()->getMock();
+        $resolver->expects($this->once())->method('resolve')->with('google.com')->willReturn($promise);
+
+        $promise = new Promise(function () { });
+        $tcp = $this->getMockBuilder('React\Socket\ConnectorInterface')->getMock();
+        $tcp->expects($this->once())->method('connect')->with('tcp://127.0.0.1:80?hostname=google.com')->willReturn($promise);
+
+        $connector = new Connector($loop, array(
+            'tcp' => $tcp,
+            'dns' => $resolver
+        ));
+
+        $connector->connect('tcp://google.com:80');
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/DnsConnectorTest.php b/assets/php/vendor/react/socket/tests/DnsConnectorTest.php
new file mode 100644
index 0000000..3c94c39
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/DnsConnectorTest.php
@@ -0,0 +1,111 @@
+<?php
+
+namespace React\Tests\Socket;
+
+use React\Socket\DnsConnector;
+use React\Promise;
+
+class DnsConnectorTest extends TestCase
+{
+    private $tcp;
+    private $resolver;
+    private $connector;
+
+    public function setUp()
+    {
+        $this->tcp = $this->getMockBuilder('React\Socket\ConnectorInterface')->getMock();
+        $this->resolver = $this->getMockBuilder('React\Dns\Resolver\Resolver')->disableOriginalConstructor()->getMock();
+
+        $this->connector = new DnsConnector($this->tcp, $this->resolver);
+    }
+
+    public function testPassByResolverIfGivenIp()
+    {
+        $this->resolver->expects($this->never())->method('resolve');
+        $this->tcp->expects($this->once())->method('connect')->with($this->equalTo('127.0.0.1:80'))->will($this->returnValue(Promise\reject()));
+
+        $this->connector->connect('127.0.0.1:80');
+    }
+
+    public function testPassThroughResolverIfGivenHost()
+    {
+        $this->resolver->expects($this->once())->method('resolve')->with($this->equalTo('google.com'))->will($this->returnValue(Promise\resolve('1.2.3.4')));
+        $this->tcp->expects($this->once())->method('connect')->with($this->equalTo('1.2.3.4:80?hostname=google.com'))->will($this->returnValue(Promise\reject()));
+
+        $this->connector->connect('google.com:80');
+    }
+
+    public function testPassThroughResolverIfGivenHostWhichResolvesToIpv6()
+    {
+        $this->resolver->expects($this->once())->method('resolve')->with($this->equalTo('google.com'))->will($this->returnValue(Promise\resolve('::1')));
+        $this->tcp->expects($this->once())->method('connect')->with($this->equalTo('[::1]:80?hostname=google.com'))->will($this->returnValue(Promise\reject()));
+
+        $this->connector->connect('google.com:80');
+    }
+
+    public function testPassByResolverIfGivenCompleteUri()
+    {
+        $this->resolver->expects($this->never())->method('resolve');
+        $this->tcp->expects($this->once())->method('connect')->with($this->equalTo('scheme://127.0.0.1:80/path?query#fragment'))->will($this->returnValue(Promise\reject()));
+
+        $this->connector->connect('scheme://127.0.0.1:80/path?query#fragment');
+    }
+
+    public function testPassThroughResolverIfGivenCompleteUri()
+    {
+        $this->resolver->expects($this->once())->method('resolve')->with($this->equalTo('google.com'))->will($this->returnValue(Promise\resolve('1.2.3.4')));
+        $this->tcp->expects($this->once())->method('connect')->with($this->equalTo('scheme://1.2.3.4:80/path?query&hostname=google.com#fragment'))->will($this->returnValue(Promise\reject()));
+
+        $this->connector->connect('scheme://google.com:80/path?query#fragment');
+    }
+
+    public function testPassThroughResolverIfGivenExplicitHost()
+    {
+        $this->resolver->expects($this->once())->method('resolve')->with($this->equalTo('google.com'))->will($this->returnValue(Promise\resolve('1.2.3.4')));
+        $this->tcp->expects($this->once())->method('connect')->with($this->equalTo('scheme://1.2.3.4:80/?hostname=google.de'))->will($this->returnValue(Promise\reject()));
+
+        $this->connector->connect('scheme://google.com:80/?hostname=google.de');
+    }
+
+    public function testRejectsImmediatelyIfUriIsInvalid()
+    {
+        $this->resolver->expects($this->never())->method('resolve');
+        $this->tcp->expects($this->never())->method('connect');
+
+        $promise = $this->connector->connect('////');
+
+        $promise->then($this->expectCallableNever(), $this->expectCallableOnce());
+    }
+
+    public function testSkipConnectionIfDnsFails()
+    {
+        $this->resolver->expects($this->once())->method('resolve')->with($this->equalTo('example.invalid'))->will($this->returnValue(Promise\reject()));
+        $this->tcp->expects($this->never())->method('connect');
+
+        $this->connector->connect('example.invalid:80');
+    }
+
+    public function testCancelDuringDnsCancelsDnsAndDoesNotStartTcpConnection()
+    {
+        $pending = new Promise\Promise(function () { }, $this->expectCallableOnce());
+        $this->resolver->expects($this->once())->method('resolve')->with($this->equalTo('example.com'))->will($this->returnValue($pending));
+        $this->tcp->expects($this->never())->method('connect');
+
+        $promise = $this->connector->connect('example.com:80');
+        $promise->cancel();
+
+        $promise->then($this->expectCallableNever(), $this->expectCallableOnce());
+    }
+
+    public function testCancelDuringTcpConnectionCancelsTcpConnection()
+    {
+        $pending = new Promise\Promise(function () { }, function () { throw new \Exception(); });
+        $this->resolver->expects($this->once())->method('resolve')->with($this->equalTo('example.com'))->will($this->returnValue(Promise\resolve('1.2.3.4')));
+        $this->tcp->expects($this->once())->method('connect')->with($this->equalTo('1.2.3.4:80?hostname=example.com'))->will($this->returnValue($pending));
+
+        $promise = $this->connector->connect('example.com:80');
+        $promise->cancel();
+
+        $promise->then($this->expectCallableNever(), $this->expectCallableOnce());
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/FixedUriConnectorTest.php b/assets/php/vendor/react/socket/tests/FixedUriConnectorTest.php
new file mode 100644
index 0000000..f42d74f
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/FixedUriConnectorTest.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace React\Tests\Socket;
+
+use React\Socket\FixedUriConnector;
+use React\Tests\Socket\TestCase;
+
+class FixedUriConnectorTest extends TestCase
+{
+    public function testWillInvokeGivenConnector()
+    {
+        $base = $this->getMockBuilder('React\Socket\ConnectorInterface')->getMock();
+        $base->expects($this->once())->method('connect')->with('test')->willReturn('ret');
+
+        $connector = new FixedUriConnector('test', $base);
+
+        $this->assertEquals('ret', $connector->connect('ignored'));
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/FunctionalConnectorTest.php b/assets/php/vendor/react/socket/tests/FunctionalConnectorTest.php
new file mode 100644
index 0000000..6611352
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/FunctionalConnectorTest.php
@@ -0,0 +1,32 @@
+<?php
+
+namespace React\Tests\Socket;
+
+use Clue\React\Block;
+use React\EventLoop\Factory;
+use React\Socket\Connector;
+use React\Socket\TcpServer;
+
+class FunctionalConnectorTest extends TestCase
+{
+    const TIMEOUT = 1.0;
+
+    /** @test */
+    public function connectionToTcpServerShouldSucceedWithLocalhost()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(9998, $loop);
+        $server->on('connection', $this->expectCallableOnce());
+        $server->on('connection', array($server, 'close'));
+
+        $connector = new Connector($loop);
+
+        $connection = Block\await($connector->connect('localhost:9998'), $loop, self::TIMEOUT);
+
+        $this->assertInstanceOf('React\Socket\ConnectionInterface', $connection);
+
+        $connection->close();
+        $server->close();
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/FunctionalSecureServerTest.php b/assets/php/vendor/react/socket/tests/FunctionalSecureServerTest.php
new file mode 100644
index 0000000..78a59d0
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/FunctionalSecureServerTest.php
@@ -0,0 +1,438 @@
+<?php
+
+namespace React\Tests\Socket;
+
+use React\EventLoop\Factory;
+use React\Socket\SecureServer;
+use React\Socket\ConnectionInterface;
+use React\Socket\TcpServer;
+use React\Socket\TcpConnector;
+use React\Socket\SecureConnector;
+use Clue\React\Block;
+
+class FunctionalSecureServerTest extends TestCase
+{
+    const TIMEOUT = 0.5;
+
+    public function setUp()
+    {
+        if (!function_exists('stream_socket_enable_crypto')) {
+            $this->markTestSkipped('Not supported on your platform (outdated HHVM?)');
+        }
+    }
+
+    public function testEmitsConnectionForNewConnection()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server = new SecureServer($server, $loop, array(
+            'local_cert' => __DIR__ . '/../examples/localhost.pem'
+        ));
+        $server->on('connection', $this->expectCallableOnce());
+
+        $connector = new SecureConnector(new TcpConnector($loop), $loop, array(
+            'verify_peer' => false
+        ));
+        $promise = $connector->connect($server->getAddress());
+
+        Block\await($promise, $loop, self::TIMEOUT);
+    }
+
+    public function testWritesDataToConnection()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server = new SecureServer($server, $loop, array(
+            'local_cert' => __DIR__ . '/../examples/localhost.pem'
+        ));
+        $server->on('connection', $this->expectCallableOnce());
+
+        $server->on('connection', function (ConnectionInterface $conn) {
+            $conn->write('foo');
+        });
+
+        $connector = new SecureConnector(new TcpConnector($loop), $loop, array(
+            'verify_peer' => false
+        ));
+        $promise = $connector->connect($server->getAddress());
+
+        $local = Block\await($promise, $loop, self::TIMEOUT);
+        /* @var $local ConnectionInterface */
+
+        $local->on('data', $this->expectCallableOnceWith('foo'));
+
+        Block\sleep(self::TIMEOUT, $loop);
+    }
+
+    public function testWritesDataInMultipleChunksToConnection()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server = new SecureServer($server, $loop, array(
+            'local_cert' => __DIR__ . '/../examples/localhost.pem'
+        ));
+        $server->on('connection', $this->expectCallableOnce());
+
+        $server->on('connection', function (ConnectionInterface $conn) {
+            $conn->write(str_repeat('*', 400000));
+        });
+
+        $connector = new SecureConnector(new TcpConnector($loop), $loop, array(
+            'verify_peer' => false
+        ));
+        $promise = $connector->connect($server->getAddress());
+
+        $local = Block\await($promise, $loop, self::TIMEOUT);
+        /* @var $local React\Stream\Stream */
+
+        $received = 0;
+        $local->on('data', function ($chunk) use (&$received) {
+            $received += strlen($chunk);
+        });
+
+        Block\sleep(self::TIMEOUT, $loop);
+
+        $this->assertEquals(400000, $received);
+    }
+
+    public function testWritesMoreDataInMultipleChunksToConnection()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server = new SecureServer($server, $loop, array(
+            'local_cert' => __DIR__ . '/../examples/localhost.pem'
+        ));
+        $server->on('connection', $this->expectCallableOnce());
+
+        $server->on('connection', function (ConnectionInterface $conn) {
+            $conn->write(str_repeat('*', 2000000));
+        });
+
+        $connector = new SecureConnector(new TcpConnector($loop), $loop, array(
+            'verify_peer' => false
+        ));
+        $promise = $connector->connect($server->getAddress());
+
+        $local = Block\await($promise, $loop, self::TIMEOUT);
+        /* @var $local React\Stream\Stream */
+
+        $received = 0;
+        $local->on('data', function ($chunk) use (&$received) {
+            $received += strlen($chunk);
+        });
+
+        Block\sleep(self::TIMEOUT, $loop);
+
+        $this->assertEquals(2000000, $received);
+    }
+
+    public function testEmitsDataFromConnection()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server = new SecureServer($server, $loop, array(
+            'local_cert' => __DIR__ . '/../examples/localhost.pem'
+        ));
+        $server->on('connection', $this->expectCallableOnce());
+
+        $once = $this->expectCallableOnceWith('foo');
+        $server->on('connection', function (ConnectionInterface $conn) use ($once) {
+            $conn->on('data', $once);
+        });
+
+        $connector = new SecureConnector(new TcpConnector($loop), $loop, array(
+            'verify_peer' => false
+        ));
+        $promise = $connector->connect($server->getAddress());
+
+        $local = Block\await($promise, $loop, self::TIMEOUT);
+        /* @var $local React\Stream\Stream */
+
+        $local->write("foo");
+
+        Block\sleep(self::TIMEOUT, $loop);
+    }
+
+    public function testEmitsDataInMultipleChunksFromConnection()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server = new SecureServer($server, $loop, array(
+            'local_cert' => __DIR__ . '/../examples/localhost.pem'
+        ));
+        $server->on('connection', $this->expectCallableOnce());
+
+        $received = 0;
+        $server->on('connection', function (ConnectionInterface $conn) use (&$received) {
+            $conn->on('data', function ($chunk) use (&$received) {
+                $received += strlen($chunk);
+            });
+        });
+
+        $connector = new SecureConnector(new TcpConnector($loop), $loop, array(
+            'verify_peer' => false
+        ));
+        $promise = $connector->connect($server->getAddress());
+
+        $local = Block\await($promise, $loop, self::TIMEOUT);
+        /* @var $local React\Stream\Stream */
+
+        $local->write(str_repeat('*', 400000));
+
+        Block\sleep(self::TIMEOUT, $loop);
+
+        $this->assertEquals(400000, $received);
+    }
+
+    public function testPipesDataBackInMultipleChunksFromConnection()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server = new SecureServer($server, $loop, array(
+            'local_cert' => __DIR__ . '/../examples/localhost.pem'
+        ));
+        $server->on('connection', $this->expectCallableOnce());
+
+        $server->on('connection', function (ConnectionInterface $conn) use (&$received) {
+            $conn->pipe($conn);
+        });
+
+        $connector = new SecureConnector(new TcpConnector($loop), $loop, array(
+            'verify_peer' => false
+        ));
+        $promise = $connector->connect($server->getAddress());
+
+        $local = Block\await($promise, $loop, self::TIMEOUT);
+        /* @var $local React\Stream\Stream */
+
+        $received = 0;
+        $local->on('data', function ($chunk) use (&$received) {
+            $received += strlen($chunk);
+        });
+
+        $local->write(str_repeat('*', 400000));
+
+        Block\sleep(self::TIMEOUT, $loop);
+
+        $this->assertEquals(400000, $received);
+    }
+
+    /**
+     * @requires PHP 5.6
+     */
+    public function testEmitsConnectionForNewTlsv11Connection()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server = new SecureServer($server, $loop, array(
+            'local_cert' => __DIR__ . '/../examples/localhost.pem',
+            'crypto_method' => STREAM_CRYPTO_METHOD_TLSv1_1_SERVER
+        ));
+        $server->on('connection', $this->expectCallableOnce());
+
+        $connector = new SecureConnector(new TcpConnector($loop), $loop, array(
+            'verify_peer' => false,
+            'crypto_method' => STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT
+        ));
+        $promise = $connector->connect($server->getAddress());
+
+        Block\await($promise, $loop, self::TIMEOUT);
+    }
+
+    /**
+     * @requires PHP 5.6
+     */
+    public function testEmitsErrorForClientWithTlsVersionMismatch()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server = new SecureServer($server, $loop, array(
+            'local_cert' => __DIR__ . '/../examples/localhost.pem',
+            'crypto_method' => STREAM_CRYPTO_METHOD_TLSv1_1_SERVER|STREAM_CRYPTO_METHOD_TLSv1_2_SERVER
+        ));
+        $server->on('connection', $this->expectCallableNever());
+        $server->on('error', $this->expectCallableOnce());
+
+        $connector = new SecureConnector(new TcpConnector($loop), $loop, array(
+            'verify_peer' => false,
+            'crypto_method' => STREAM_CRYPTO_METHOD_TLSv1_0_CLIENT
+        ));
+        $promise = $connector->connect($server->getAddress());
+
+        $this->setExpectedException('RuntimeException', 'handshake');
+        Block\await($promise, $loop, self::TIMEOUT);
+    }
+
+    public function testEmitsConnectionForNewConnectionWithEncryptedCertificate()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server = new SecureServer($server, $loop, array(
+            'local_cert' => __DIR__ . '/../examples/localhost_swordfish.pem',
+            'passphrase' => 'swordfish'
+        ));
+        $server->on('connection', $this->expectCallableOnce());
+
+        $connector = new SecureConnector(new TcpConnector($loop), $loop, array(
+            'verify_peer' => false
+        ));
+        $promise = $connector->connect($server->getAddress());
+
+        Block\await($promise, $loop, self::TIMEOUT);
+    }
+
+    public function testEmitsErrorForServerWithInvalidCertificate()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server = new SecureServer($server, $loop, array(
+            'local_cert' => 'invalid.pem'
+        ));
+        $server->on('connection', $this->expectCallableNever());
+        $server->on('error', $this->expectCallableOnce());
+
+        $connector = new SecureConnector(new TcpConnector($loop), $loop, array(
+            'verify_peer' => false
+        ));
+        $promise = $connector->connect($server->getAddress());
+
+        $this->setExpectedException('RuntimeException', 'handshake');
+        Block\await($promise, $loop, self::TIMEOUT);
+    }
+
+    public function testEmitsErrorForServerWithEncryptedCertificateMissingPassphrase()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server = new SecureServer($server, $loop, array(
+            'local_cert' => __DIR__ . '/../examples/localhost_swordfish.pem'
+        ));
+        $server->on('connection', $this->expectCallableNever());
+        $server->on('error', $this->expectCallableOnce());
+
+        $connector = new SecureConnector(new TcpConnector($loop), $loop, array(
+            'verify_peer' => false
+        ));
+        $promise = $connector->connect($server->getAddress());
+
+        $this->setExpectedException('RuntimeException', 'handshake');
+        Block\await($promise, $loop, self::TIMEOUT);
+    }
+
+    public function testEmitsErrorForServerWithEncryptedCertificateWithInvalidPassphrase()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server = new SecureServer($server, $loop, array(
+            'local_cert' => __DIR__ . '/../examples/localhost_swordfish.pem',
+            'passphrase' => 'nope'
+        ));
+        $server->on('connection', $this->expectCallableNever());
+        $server->on('error', $this->expectCallableOnce());
+
+        $connector = new SecureConnector(new TcpConnector($loop), $loop, array(
+            'verify_peer' => false
+        ));
+        $promise = $connector->connect($server->getAddress());
+
+        $this->setExpectedException('RuntimeException', 'handshake');
+        Block\await($promise, $loop, self::TIMEOUT);
+    }
+
+    public function testEmitsErrorForConnectionWithPeerVerification()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server = new SecureServer($server, $loop, array(
+            'local_cert' => __DIR__ . '/../examples/localhost.pem'
+        ));
+        $server->on('connection', $this->expectCallableNever());
+        $server->on('error', $this->expectCallableOnce());
+
+        $connector = new SecureConnector(new TcpConnector($loop), $loop, array(
+            'verify_peer' => true
+        ));
+        $promise = $connector->connect($server->getAddress());
+
+        $promise->then(null, $this->expectCallableOnce());
+        Block\sleep(self::TIMEOUT, $loop);
+    }
+
+    public function testEmitsErrorIfConnectionIsCancelled()
+    {
+        if (PHP_OS !== 'Linux') {
+            $this->markTestSkipped('Linux only (OS is ' . PHP_OS . ')');
+        }
+
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server = new SecureServer($server, $loop, array(
+            'local_cert' => __DIR__ . '/../examples/localhost.pem'
+        ));
+        $server->on('connection', $this->expectCallableNever());
+        $server->on('error', $this->expectCallableOnce());
+
+        $connector = new SecureConnector(new TcpConnector($loop), $loop, array(
+            'verify_peer' => false
+        ));
+        $promise = $connector->connect($server->getAddress());
+        $promise->cancel();
+
+        $promise->then(null, $this->expectCallableOnce());
+        Block\sleep(self::TIMEOUT, $loop);
+    }
+
+    public function testEmitsNothingIfConnectionIsIdle()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server = new SecureServer($server, $loop, array(
+            'local_cert' => __DIR__ . '/../examples/localhost.pem'
+        ));
+        $server->on('connection', $this->expectCallableNever());
+        $server->on('error', $this->expectCallableNever());
+
+        $connector = new TcpConnector($loop);
+        $promise = $connector->connect(str_replace('tls://', '', $server->getAddress()));
+
+        $promise->then($this->expectCallableOnce());
+        Block\sleep(self::TIMEOUT, $loop);
+    }
+
+    public function testEmitsErrorIfConnectionIsNotSecureHandshake()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server = new SecureServer($server, $loop, array(
+            'local_cert' => __DIR__ . '/../examples/localhost.pem'
+        ));
+        $server->on('connection', $this->expectCallableNever());
+        $server->on('error', $this->expectCallableOnce());
+
+        $connector = new TcpConnector($loop);
+        $promise = $connector->connect(str_replace('tls://', '', $server->getAddress()));
+
+        $promise->then(function (ConnectionInterface $stream) {
+            $stream->write("GET / HTTP/1.0\r\n\r\n");
+        });
+
+        Block\sleep(self::TIMEOUT, $loop);
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/FunctionalTcpServerTest.php b/assets/php/vendor/react/socket/tests/FunctionalTcpServerTest.php
new file mode 100644
index 0000000..ec7855e
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/FunctionalTcpServerTest.php
@@ -0,0 +1,324 @@
+<?php
+
+namespace React\Tests\Socket;
+
+use React\EventLoop\Factory;
+use React\Socket\TcpServer;
+use React\Socket\ConnectionInterface;
+use React\Socket\TcpConnector;
+use Clue\React\Block;
+
+class FunctionalTcpServerTest extends TestCase
+{
+    public function testEmitsConnectionForNewConnection()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server->on('connection', $this->expectCallableOnce());
+
+        $connector = new TcpConnector($loop);
+        $promise = $connector->connect($server->getAddress());
+
+        $promise->then($this->expectCallableOnce());
+
+        Block\sleep(0.1, $loop);
+    }
+
+    public function testEmitsNoConnectionForNewConnectionWhenPaused()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server->on('connection', $this->expectCallableNever());
+        $server->pause();
+
+        $connector = new TcpConnector($loop);
+        $promise = $connector->connect($server->getAddress());
+
+        $promise->then($this->expectCallableOnce());
+
+        Block\sleep(0.1, $loop);
+    }
+
+    public function testEmitsConnectionForNewConnectionWhenResumedAfterPause()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server->on('connection', $this->expectCallableOnce());
+        $server->pause();
+        $server->resume();
+
+        $connector = new TcpConnector($loop);
+        $promise = $connector->connect($server->getAddress());
+
+        $promise->then($this->expectCallableOnce());
+
+        Block\sleep(0.1, $loop);
+    }
+
+    public function testEmitsConnectionWithRemoteIp()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $peer = null;
+        $server->on('connection', function (ConnectionInterface $conn) use (&$peer) {
+            $peer = $conn->getRemoteAddress();
+        });
+
+        $connector = new TcpConnector($loop);
+        $promise = $connector->connect($server->getAddress());
+
+        $promise->then($this->expectCallableOnce());
+
+        Block\sleep(0.1, $loop);
+
+        $this->assertContains('127.0.0.1:', $peer);
+    }
+
+    public function testEmitsConnectionWithLocalIp()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $local = null;
+        $server->on('connection', function (ConnectionInterface $conn) use (&$local) {
+            $local = $conn->getLocalAddress();
+        });
+
+        $connector = new TcpConnector($loop);
+        $promise = $connector->connect($server->getAddress());
+
+        $promise->then($this->expectCallableOnce());
+
+        Block\sleep(0.1, $loop);
+
+        $this->assertContains('127.0.0.1:', $local);
+        $this->assertEquals($server->getAddress(), $local);
+    }
+
+    public function testEmitsConnectionWithLocalIpDespiteListeningOnAll()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer('0.0.0.0:0', $loop);
+        $local = null;
+        $server->on('connection', function (ConnectionInterface $conn) use (&$local) {
+            $local = $conn->getLocalAddress();
+        });
+
+        $connector = new TcpConnector($loop);
+        $promise = $connector->connect($server->getAddress());
+
+        $promise->then($this->expectCallableOnce());
+
+        Block\sleep(0.1, $loop);
+
+        $this->assertContains('127.0.0.1:', $local);
+    }
+
+    public function testEmitsConnectionWithRemoteIpAfterConnectionIsClosedByPeer()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $peer = null;
+        $server->on('connection', function (ConnectionInterface $conn) use (&$peer) {
+            $conn->on('close', function () use ($conn, &$peer) {
+                $peer = $conn->getRemoteAddress();
+            });
+        });
+
+        $connector = new TcpConnector($loop);
+        $promise = $connector->connect($server->getAddress());
+
+        $client = Block\await($promise, $loop, 0.1);
+        $client->end();
+
+        Block\sleep(0.1, $loop);
+
+        $this->assertContains('127.0.0.1:', $peer);
+    }
+
+    public function testEmitsConnectionWithRemoteNullAddressAfterConnectionIsClosedLocally()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $peer = null;
+        $server->on('connection', function (ConnectionInterface $conn) use (&$peer) {
+            $conn->close();
+            $peer = $conn->getRemoteAddress();
+        });
+
+        $connector = new TcpConnector($loop);
+        $promise = $connector->connect($server->getAddress());
+
+        $promise->then($this->expectCallableOnce());
+
+        Block\sleep(0.1, $loop);
+
+        $this->assertNull($peer);
+    }
+
+    public function testEmitsConnectionEvenIfConnectionIsCancelled()
+    {
+        if (PHP_OS !== 'Linux') {
+            $this->markTestSkipped('Linux only (OS is ' . PHP_OS . ')');
+        }
+
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server->on('connection', $this->expectCallableOnce());
+
+        $connector = new TcpConnector($loop);
+        $promise = $connector->connect($server->getAddress());
+        $promise->cancel();
+
+        $promise->then(null, $this->expectCallableOnce());
+
+        Block\sleep(0.1, $loop);
+    }
+
+    public function testEmitsConnectionForNewIpv6Connection()
+    {
+        $loop = Factory::create();
+
+        try {
+            $server = new TcpServer('[::1]:0', $loop);
+        } catch (\RuntimeException $e) {
+            $this->markTestSkipped('Unable to start IPv6 server socket (not available on your platform?)');
+        }
+
+        $server->on('connection', $this->expectCallableOnce());
+
+        $connector = new TcpConnector($loop);
+        $promise = $connector->connect($server->getAddress());
+
+        $promise->then($this->expectCallableOnce());
+
+        Block\sleep(0.1, $loop);
+    }
+
+    public function testEmitsConnectionWithRemoteIpv6()
+    {
+        $loop = Factory::create();
+
+        try {
+            $server = new TcpServer('[::1]:0', $loop);
+        } catch (\RuntimeException $e) {
+            $this->markTestSkipped('Unable to start IPv6 server socket (not available on your platform?)');
+        }
+
+        $peer = null;
+        $server->on('connection', function (ConnectionInterface $conn) use (&$peer) {
+            $peer = $conn->getRemoteAddress();
+        });
+
+        $connector = new TcpConnector($loop);
+        $promise = $connector->connect($server->getAddress());
+
+        $promise->then($this->expectCallableOnce());
+
+        Block\sleep(0.1, $loop);
+
+        $this->assertContains('[::1]:', $peer);
+    }
+
+    public function testEmitsConnectionWithLocalIpv6()
+    {
+        $loop = Factory::create();
+
+        try {
+            $server = new TcpServer('[::1]:0', $loop);
+        } catch (\RuntimeException $e) {
+            $this->markTestSkipped('Unable to start IPv6 server socket (not available on your platform?)');
+        }
+
+        $local = null;
+        $server->on('connection', function (ConnectionInterface $conn) use (&$local) {
+            $local = $conn->getLocalAddress();
+        });
+
+        $connector = new TcpConnector($loop);
+        $promise = $connector->connect($server->getAddress());
+
+        $promise->then($this->expectCallableOnce());
+
+        Block\sleep(0.1, $loop);
+
+        $this->assertContains('[::1]:', $local);
+        $this->assertEquals($server->getAddress(), $local);
+    }
+
+    public function testEmitsConnectionWithInheritedContextOptions()
+    {
+        if (defined('HHVM_VERSION') && version_compare(HHVM_VERSION, '3.13', '<')) {
+            // https://3v4l.org/hB4Tc
+            $this->markTestSkipped('Not supported on legacy HHVM < 3.13');
+        }
+
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop, array(
+            'backlog' => 4
+        ));
+
+        $all = null;
+        $server->on('connection', function (ConnectionInterface $conn) use (&$all) {
+            $all = stream_context_get_options($conn->stream);
+        });
+
+        $connector = new TcpConnector($loop);
+        $promise = $connector->connect($server->getAddress());
+
+        $promise->then($this->expectCallableOnce());
+
+        Block\sleep(0.1, $loop);
+
+        $this->assertEquals(array('socket' => array('backlog' => 4)), $all);
+    }
+
+    /**
+     * @expectedException InvalidArgumentException
+     */
+    public function testFailsToListenOnInvalidUri()
+    {
+        $loop = Factory::create();
+
+        new TcpServer('///', $loop);
+    }
+
+    /**
+     * @expectedException InvalidArgumentException
+     */
+    public function testFailsToListenOnUriWithoutPort()
+    {
+        $loop = Factory::create();
+
+        new TcpServer('127.0.0.1', $loop);
+    }
+
+    /**
+     * @expectedException InvalidArgumentException
+     */
+    public function testFailsToListenOnUriWithWrongScheme()
+    {
+        $loop = Factory::create();
+
+        new TcpServer('udp://127.0.0.1:0', $loop);
+    }
+
+    /**
+     * @expectedException InvalidArgumentException
+     */
+    public function testFailsToListenOnUriWIthHostname()
+    {
+        $loop = Factory::create();
+
+        new TcpServer('localhost:8080', $loop);
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/IntegrationTest.php b/assets/php/vendor/react/socket/tests/IntegrationTest.php
new file mode 100644
index 0000000..24dbe37
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/IntegrationTest.php
@@ -0,0 +1,171 @@
+<?php
+
+namespace React\Tests\Socket;
+
+use Clue\React\Block;
+use React\Dns\Resolver\Factory as ResolverFactory;
+use React\EventLoop\Factory;
+use React\Socket\Connector;
+use React\Socket\DnsConnector;
+use React\Socket\SecureConnector;
+use React\Socket\TcpConnector;
+
+/** @group internet */
+class IntegrationTest extends TestCase
+{
+    const TIMEOUT = 5.0;
+
+    /** @test */
+    public function gettingStuffFromGoogleShouldWork()
+    {
+        $loop = Factory::create();
+        $connector = new Connector($loop);
+
+        $conn = Block\await($connector->connect('google.com:80'), $loop);
+
+        $this->assertContains(':80', $conn->getRemoteAddress());
+        $this->assertNotEquals('google.com:80', $conn->getRemoteAddress());
+
+        $conn->write("GET / HTTP/1.0\r\n\r\n");
+
+        $response = $this->buffer($conn, $loop, self::TIMEOUT);
+
+        $this->assertRegExp('#^HTTP/1\.0#', $response);
+    }
+
+    /** @test */
+    public function gettingEncryptedStuffFromGoogleShouldWork()
+    {
+        if (!function_exists('stream_socket_enable_crypto')) {
+            $this->markTestSkipped('Not supported on your platform (outdated HHVM?)');
+        }
+
+        $loop = Factory::create();
+        $secureConnector = new Connector($loop);
+
+        $conn = Block\await($secureConnector->connect('tls://google.com:443'), $loop);
+
+        $conn->write("GET / HTTP/1.0\r\n\r\n");
+
+        $response = $this->buffer($conn, $loop, self::TIMEOUT);
+
+        $this->assertRegExp('#^HTTP/1\.0#', $response);
+    }
+
+    /** @test */
+    public function gettingEncryptedStuffFromGoogleShouldWorkIfHostIsResolvedFirst()
+    {
+        if (!function_exists('stream_socket_enable_crypto')) {
+            $this->markTestSkipped('Not supported on your platform (outdated HHVM?)');
+        }
+
+        $loop = Factory::create();
+
+        $factory = new ResolverFactory();
+        $dns = $factory->create('8.8.8.8', $loop);
+
+        $connector = new DnsConnector(
+            new SecureConnector(
+                new TcpConnector($loop),
+                $loop
+            ),
+            $dns
+        );
+
+        $conn = Block\await($connector->connect('google.com:443'), $loop);
+
+        $conn->write("GET / HTTP/1.0\r\n\r\n");
+
+        $response = $this->buffer($conn, $loop, self::TIMEOUT);
+
+        $this->assertRegExp('#^HTTP/1\.0#', $response);
+    }
+
+    /** @test */
+    public function gettingPlaintextStuffFromEncryptedGoogleShouldNotWork()
+    {
+        $loop = Factory::create();
+        $connector = new Connector($loop);
+
+        $conn = Block\await($connector->connect('google.com:443'), $loop);
+
+        $this->assertContains(':443', $conn->getRemoteAddress());
+        $this->assertNotEquals('google.com:443', $conn->getRemoteAddress());
+
+        $conn->write("GET / HTTP/1.0\r\n\r\n");
+
+        $response = $this->buffer($conn, $loop, self::TIMEOUT);
+
+        $this->assertNotRegExp('#^HTTP/1\.0#', $response);
+    }
+
+    public function testConnectingFailsIfDnsUsesInvalidResolver()
+    {
+        $loop = Factory::create();
+
+        $factory = new ResolverFactory();
+        $dns = $factory->create('demo.invalid', $loop);
+
+        $connector = new Connector($loop, array(
+            'dns' => $dns
+        ));
+
+        $this->setExpectedException('RuntimeException');
+        Block\await($connector->connect('google.com:80'), $loop, self::TIMEOUT);
+    }
+
+    public function testConnectingFailsIfTimeoutIsTooSmall()
+    {
+        if (!function_exists('stream_socket_enable_crypto')) {
+            $this->markTestSkipped('Not supported on your platform (outdated HHVM?)');
+        }
+
+        $loop = Factory::create();
+
+        $connector = new Connector($loop, array(
+            'timeout' => 0.001
+        ));
+
+        $this->setExpectedException('RuntimeException');
+        Block\await($connector->connect('google.com:80'), $loop, self::TIMEOUT);
+    }
+
+    public function testSelfSignedRejectsIfVerificationIsEnabled()
+    {
+        if (!function_exists('stream_socket_enable_crypto')) {
+            $this->markTestSkipped('Not supported on your platform (outdated HHVM?)');
+        }
+
+        $loop = Factory::create();
+
+        $connector = new Connector($loop, array(
+            'tls' => array(
+                'verify_peer' => true
+            )
+        ));
+
+        $this->setExpectedException('RuntimeException');
+        Block\await($connector->connect('tls://self-signed.badssl.com:443'), $loop, self::TIMEOUT);
+    }
+
+    public function testSelfSignedResolvesIfVerificationIsDisabled()
+    {
+        if (!function_exists('stream_socket_enable_crypto')) {
+            $this->markTestSkipped('Not supported on your platform (outdated HHVM?)');
+        }
+
+        $loop = Factory::create();
+
+        $connector = new Connector($loop, array(
+            'tls' => array(
+                'verify_peer' => false
+            )
+        ));
+
+        $conn = Block\await($connector->connect('tls://self-signed.badssl.com:443'), $loop, self::TIMEOUT);
+        $conn->close();
+
+        // if we reach this, then everything is good
+        $this->assertNull(null);
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/LimitingServerTest.php b/assets/php/vendor/react/socket/tests/LimitingServerTest.php
new file mode 100644
index 0000000..2cc9a58
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/LimitingServerTest.php
@@ -0,0 +1,195 @@
+<?php
+
+namespace React\Tests\Socket;
+
+use React\Socket\LimitingServer;
+use React\Socket\TcpServer;
+use React\EventLoop\Factory;
+use Clue\React\Block;
+
+class LimitingServerTest extends TestCase
+{
+    public function testGetAddressWillBePassedThroughToTcpServer()
+    {
+        $tcp = $this->getMockBuilder('React\Socket\ServerInterface')->getMock();
+        $tcp->expects($this->once())->method('getAddress')->willReturn('127.0.0.1:1234');
+
+        $server = new LimitingServer($tcp, 100);
+
+        $this->assertEquals('127.0.0.1:1234', $server->getAddress());
+    }
+
+    public function testPauseWillBePassedThroughToTcpServer()
+    {
+        $tcp = $this->getMockBuilder('React\Socket\ServerInterface')->getMock();
+        $tcp->expects($this->once())->method('pause');
+
+        $server = new LimitingServer($tcp, 100);
+
+        $server->pause();
+    }
+
+    public function testPauseTwiceWillBePassedThroughToTcpServerOnce()
+    {
+        $tcp = $this->getMockBuilder('React\Socket\ServerInterface')->getMock();
+        $tcp->expects($this->once())->method('pause');
+
+        $server = new LimitingServer($tcp, 100);
+
+        $server->pause();
+        $server->pause();
+    }
+
+    public function testResumeWillBePassedThroughToTcpServer()
+    {
+        $tcp = $this->getMockBuilder('React\Socket\ServerInterface')->getMock();
+        $tcp->expects($this->once())->method('resume');
+
+        $server = new LimitingServer($tcp, 100);
+
+        $server->pause();
+        $server->resume();
+    }
+
+    public function testResumeTwiceWillBePassedThroughToTcpServerOnce()
+    {
+        $tcp = $this->getMockBuilder('React\Socket\ServerInterface')->getMock();
+        $tcp->expects($this->once())->method('resume');
+
+        $server = new LimitingServer($tcp, 100);
+
+        $server->pause();
+        $server->resume();
+        $server->resume();
+    }
+
+    public function testCloseWillBePassedThroughToTcpServer()
+    {
+        $tcp = $this->getMockBuilder('React\Socket\ServerInterface')->getMock();
+        $tcp->expects($this->once())->method('close');
+
+        $server = new LimitingServer($tcp, 100);
+
+        $server->close();
+    }
+
+    public function testSocketErrorWillBeForwarded()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $tcp = new TcpServer(0, $loop);
+
+        $server = new LimitingServer($tcp, 100);
+
+        $server->on('error', $this->expectCallableOnce());
+
+        $tcp->emit('error', array(new \RuntimeException('test')));
+    }
+
+    public function testSocketConnectionWillBeForwarded()
+    {
+        $connection = $this->getMockBuilder('React\Socket\ConnectionInterface')->getMock();
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $tcp = new TcpServer(0, $loop);
+
+        $server = new LimitingServer($tcp, 100);
+        $server->on('connection', $this->expectCallableOnceWith($connection));
+        $server->on('error', $this->expectCallableNever());
+
+        $tcp->emit('connection', array($connection));
+
+        $this->assertEquals(array($connection), $server->getConnections());
+    }
+
+    public function testSocketConnectionWillBeClosedOnceLimitIsReached()
+    {
+        $first = $this->getMockBuilder('React\Socket\ConnectionInterface')->getMock();
+        $first->expects($this->never())->method('close');
+        $second = $this->getMockBuilder('React\Socket\ConnectionInterface')->getMock();
+        $second->expects($this->once())->method('close');
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $tcp = new TcpServer(0, $loop);
+
+        $server = new LimitingServer($tcp, 1);
+        $server->on('connection', $this->expectCallableOnceWith($first));
+        $server->on('error', $this->expectCallableOnce());
+
+        $tcp->emit('connection', array($first));
+        $tcp->emit('connection', array($second));
+    }
+
+    public function testPausingServerWillBePausedOnceLimitIsReached()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('addReadStream');
+        $loop->expects($this->once())->method('removeReadStream');
+
+        $tcp = new TcpServer(0, $loop);
+
+        $connection = $this->getMockBuilder('React\Socket\ConnectionInterface')->getMock();
+
+        $server = new LimitingServer($tcp, 1, true);
+
+        $tcp->emit('connection', array($connection));
+    }
+
+    public function testSocketDisconnectionWillRemoveFromList()
+    {
+        $loop = Factory::create();
+
+        $tcp = new TcpServer(0, $loop);
+
+        $socket = stream_socket_client($tcp->getAddress());
+        fclose($socket);
+
+        $server = new LimitingServer($tcp, 100);
+        $server->on('connection', $this->expectCallableOnce());
+        $server->on('error', $this->expectCallableNever());
+
+        Block\sleep(0.1, $loop);
+
+        $this->assertEquals(array(), $server->getConnections());
+    }
+
+    public function testPausingServerWillEmitOnlyOneButAcceptTwoConnectionsDueToOperatingSystem()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(0, $loop);
+        $server = new LimitingServer($server, 1, true);
+        $server->on('connection', $this->expectCallableOnce());
+        $server->on('error', $this->expectCallableNever());
+
+        $first = stream_socket_client($server->getAddress());
+        $second = stream_socket_client($server->getAddress());
+
+        Block\sleep(0.1, $loop);
+
+        fclose($first);
+        fclose($second);
+    }
+
+    public function testPausingServerWillEmitTwoConnectionsFromBacklog()
+    {
+        $loop = Factory::create();
+
+        $twice = $this->createCallableMock();
+        $twice->expects($this->exactly(2))->method('__invoke');
+
+        $server = new TcpServer(0, $loop);
+        $server = new LimitingServer($server, 1, true);
+        $server->on('connection', $twice);
+        $server->on('error', $this->expectCallableNever());
+
+        $first = stream_socket_client($server->getAddress());
+        fclose($first);
+        $second = stream_socket_client($server->getAddress());
+        fclose($second);
+
+        Block\sleep(0.1, $loop);
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/SecureConnectorTest.php b/assets/php/vendor/react/socket/tests/SecureConnectorTest.php
new file mode 100644
index 0000000..0b3a702
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/SecureConnectorTest.php
@@ -0,0 +1,74 @@
+<?php
+
+namespace React\Tests\Socket;
+
+use React\Promise;
+use React\Socket\SecureConnector;
+
+class SecureConnectorTest extends TestCase
+{
+    private $loop;
+    private $tcp;
+    private $connector;
+
+    public function setUp()
+    {
+        if (!function_exists('stream_socket_enable_crypto')) {
+            $this->markTestSkipped('Not supported on your platform (outdated HHVM?)');
+        }
+
+        $this->loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $this->tcp = $this->getMockBuilder('React\Socket\ConnectorInterface')->getMock();
+        $this->connector = new SecureConnector($this->tcp, $this->loop);
+    }
+
+    public function testConnectionWillWaitForTcpConnection()
+    {
+        $pending = new Promise\Promise(function () { });
+        $this->tcp->expects($this->once())->method('connect')->with($this->equalTo('example.com:80'))->will($this->returnValue($pending));
+
+        $promise = $this->connector->connect('example.com:80');
+
+        $this->assertInstanceOf('React\Promise\PromiseInterface', $promise);
+    }
+
+    public function testConnectionWithCompleteUriWillBePassedThroughExpectForScheme()
+    {
+        $pending = new Promise\Promise(function () { });
+        $this->tcp->expects($this->once())->method('connect')->with($this->equalTo('example.com:80/path?query#fragment'))->will($this->returnValue($pending));
+
+        $this->connector->connect('tls://example.com:80/path?query#fragment');
+    }
+
+    public function testConnectionToInvalidSchemeWillReject()
+    {
+        $this->tcp->expects($this->never())->method('connect');
+
+        $promise = $this->connector->connect('tcp://example.com:80');
+
+        $promise->then(null, $this->expectCallableOnce());
+    }
+
+    public function testCancelDuringTcpConnectionCancelsTcpConnection()
+    {
+        $pending = new Promise\Promise(function () { }, function () { throw new \Exception(); });
+        $this->tcp->expects($this->once())->method('connect')->with($this->equalTo('example.com:80'))->will($this->returnValue($pending));
+
+        $promise = $this->connector->connect('example.com:80');
+        $promise->cancel();
+
+        $promise->then($this->expectCallableNever(), $this->expectCallableOnce());
+    }
+
+    public function testConnectionWillBeClosedAndRejectedIfConnectioIsNoStream()
+    {
+        $connection = $this->getMockBuilder('React\Socket\ConnectionInterface')->getMock();
+        $connection->expects($this->once())->method('close');
+
+        $this->tcp->expects($this->once())->method('connect')->with($this->equalTo('example.com:80'))->willReturn(Promise\resolve($connection));
+
+        $promise = $this->connector->connect('example.com:80');
+
+        $promise->then($this->expectCallableNever(), $this->expectCallableOnce());
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/SecureIntegrationTest.php b/assets/php/vendor/react/socket/tests/SecureIntegrationTest.php
new file mode 100644
index 0000000..8c9ba14
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/SecureIntegrationTest.php
@@ -0,0 +1,204 @@
+<?php
+
+namespace React\Tests\Socket;
+
+use React\EventLoop\Factory as LoopFactory;
+use React\Socket\TcpServer;
+use React\Socket\SecureServer;
+use React\Socket\TcpConnector;
+use React\Socket\SecureConnector;
+use Clue\React\Block;
+use React\Promise\Promise;
+use Evenement\EventEmitterInterface;
+use React\Promise\Deferred;
+use React\Socket\ConnectionInterface;
+
+class SecureIntegrationTest extends TestCase
+{
+    const TIMEOUT = 0.5;
+
+    private $loop;
+    private $server;
+    private $connector;
+    private $address;
+
+    public function setUp()
+    {
+        if (!function_exists('stream_socket_enable_crypto')) {
+            $this->markTestSkipped('Not supported on your platform (outdated HHVM?)');
+        }
+
+        $this->loop = LoopFactory::create();
+        $this->server = new TcpServer(0, $this->loop);
+        $this->server = new SecureServer($this->server, $this->loop, array(
+            'local_cert' => __DIR__ . '/../examples/localhost.pem'
+        ));
+        $this->address = $this->server->getAddress();
+        $this->connector = new SecureConnector(new TcpConnector($this->loop), $this->loop, array('verify_peer' => false));
+    }
+
+    public function tearDown()
+    {
+        if ($this->server !== null) {
+            $this->server->close();
+            $this->server = null;
+        }
+    }
+
+    public function testConnectToServer()
+    {
+        $client = Block\await($this->connector->connect($this->address), $this->loop, self::TIMEOUT);
+        /* @var $client ConnectionInterface */
+
+        $client->close();
+
+        // if we reach this, then everything is good
+        $this->assertNull(null);
+    }
+
+    public function testConnectToServerEmitsConnection()
+    {
+        $promiseServer = $this->createPromiseForEvent($this->server, 'connection', $this->expectCallableOnce());
+
+        $promiseClient = $this->connector->connect($this->address);
+
+        list($_, $client) = Block\awaitAll(array($promiseServer, $promiseClient), $this->loop, self::TIMEOUT);
+        /* @var $client ConnectionInterface */
+
+        $client->close();
+    }
+
+    public function testSendSmallDataToServerReceivesOneChunk()
+    {
+        // server expects one connection which emits one data event
+        $received = new Deferred();
+        $this->server->on('connection', function (ConnectionInterface $peer) use ($received) {
+            $peer->on('data', function ($chunk) use ($received) {
+                $received->resolve($chunk);
+            });
+        });
+
+        $client = Block\await($this->connector->connect($this->address), $this->loop, self::TIMEOUT);
+        /* @var $client ConnectionInterface */
+
+        $client->write('hello');
+
+        // await server to report one "data" event
+        $data = Block\await($received->promise(), $this->loop, self::TIMEOUT);
+
+        $client->close();
+
+        $this->assertEquals('hello', $data);
+    }
+
+    public function testSendDataWithEndToServerReceivesAllData()
+    {
+        $disconnected = new Deferred();
+        $this->server->on('connection', function (ConnectionInterface $peer) use ($disconnected) {
+            $received = '';
+            $peer->on('data', function ($chunk) use (&$received) {
+                $received .= $chunk;
+            });
+            $peer->on('close', function () use (&$received, $disconnected) {
+                $disconnected->resolve($received);
+            });
+        });
+
+        $client = Block\await($this->connector->connect($this->address), $this->loop, self::TIMEOUT);
+        /* @var $client ConnectionInterface */
+
+        $data = str_repeat('a', 200000);
+        $client->end($data);
+
+        // await server to report connection "close" event
+        $received = Block\await($disconnected->promise(), $this->loop, self::TIMEOUT);
+
+        $this->assertEquals($data, $received);
+    }
+
+    public function testSendDataWithoutEndingToServerReceivesAllData()
+    {
+        $received = '';
+        $this->server->on('connection', function (ConnectionInterface $peer) use (&$received) {
+            $peer->on('data', function ($chunk) use (&$received) {
+                $received .= $chunk;
+            });
+        });
+
+        $client = Block\await($this->connector->connect($this->address), $this->loop, self::TIMEOUT);
+        /* @var $client ConnectionInterface */
+
+        $data = str_repeat('d', 200000);
+        $client->write($data);
+
+        // buffer incoming data for 0.1s (should be plenty of time)
+        Block\sleep(0.1, $this->loop);
+
+        $client->close();
+
+        $this->assertEquals($data, $received);
+    }
+
+    public function testConnectToServerWhichSendsSmallDataReceivesOneChunk()
+    {
+        $this->server->on('connection', function (ConnectionInterface $peer) {
+            $peer->write('hello');
+        });
+
+        $client = Block\await($this->connector->connect($this->address), $this->loop, self::TIMEOUT);
+        /* @var $client ConnectionInterface */
+
+        // await client to report one "data" event
+        $receive = $this->createPromiseForEvent($client, 'data', $this->expectCallableOnceWith('hello'));
+        Block\await($receive, $this->loop, self::TIMEOUT);
+
+        $client->close();
+    }
+
+    public function testConnectToServerWhichSendsDataWithEndReceivesAllData()
+    {
+        $data = str_repeat('b', 100000);
+        $this->server->on('connection', function (ConnectionInterface $peer) use ($data) {
+            $peer->end($data);
+        });
+
+        $client = Block\await($this->connector->connect($this->address), $this->loop, self::TIMEOUT);
+        /* @var $client ConnectionInterface */
+
+        // await data from client until it closes
+        $received = $this->buffer($client, $this->loop, self::TIMEOUT);
+
+        $this->assertEquals($data, $received);
+    }
+
+    public function testConnectToServerWhichSendsDataWithoutEndingReceivesAllData()
+    {
+        $data = str_repeat('c', 100000);
+        $this->server->on('connection', function (ConnectionInterface $peer) use ($data) {
+            $peer->write($data);
+        });
+
+        $client = Block\await($this->connector->connect($this->address), $this->loop, self::TIMEOUT);
+        /* @var $client ConnectionInterface */
+
+        // buffer incoming data for 0.1s (should be plenty of time)
+        $received = '';
+        $client->on('data', function ($chunk) use (&$received) {
+            $received .= $chunk;
+        });
+        Block\sleep(0.1, $this->loop);
+
+        $client->close();
+
+        $this->assertEquals($data, $received);
+    }
+
+    private function createPromiseForEvent(EventEmitterInterface $emitter, $event, $fn)
+    {
+        return new Promise(function ($resolve) use ($emitter, $event, $fn) {
+            $emitter->on($event, function () use ($resolve, $fn) {
+                $resolve(call_user_func_array($fn, func_get_args()));
+            });
+        });
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/SecureServerTest.php b/assets/php/vendor/react/socket/tests/SecureServerTest.php
new file mode 100644
index 0000000..92c641f
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/SecureServerTest.php
@@ -0,0 +1,105 @@
+<?php
+
+namespace React\Tests\Socket;
+
+use React\Socket\SecureServer;
+use React\Socket\TcpServer;
+
+class SecureServerTest extends TestCase
+{
+    public function setUp()
+    {
+        if (!function_exists('stream_socket_enable_crypto')) {
+            $this->markTestSkipped('Not supported on your platform (outdated HHVM?)');
+        }
+    }
+
+    public function testGetAddressWillBePassedThroughToTcpServer()
+    {
+        $tcp = $this->getMockBuilder('React\Socket\ServerInterface')->getMock();
+        $tcp->expects($this->once())->method('getAddress')->willReturn('tcp://127.0.0.1:1234');
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $server = new SecureServer($tcp, $loop, array());
+
+        $this->assertEquals('tls://127.0.0.1:1234', $server->getAddress());
+    }
+
+    public function testGetAddressWillReturnNullIfTcpServerReturnsNull()
+    {
+        $tcp = $this->getMockBuilder('React\Socket\ServerInterface')->getMock();
+        $tcp->expects($this->once())->method('getAddress')->willReturn(null);
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $server = new SecureServer($tcp, $loop, array());
+
+        $this->assertNull($server->getAddress());
+    }
+
+    public function testPauseWillBePassedThroughToTcpServer()
+    {
+        $tcp = $this->getMockBuilder('React\Socket\ServerInterface')->getMock();
+        $tcp->expects($this->once())->method('pause');
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $server = new SecureServer($tcp, $loop, array());
+
+        $server->pause();
+    }
+
+    public function testResumeWillBePassedThroughToTcpServer()
+    {
+        $tcp = $this->getMockBuilder('React\Socket\ServerInterface')->getMock();
+        $tcp->expects($this->once())->method('resume');
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $server = new SecureServer($tcp, $loop, array());
+
+        $server->resume();
+    }
+
+    public function testCloseWillBePassedThroughToTcpServer()
+    {
+        $tcp = $this->getMockBuilder('React\Socket\ServerInterface')->getMock();
+        $tcp->expects($this->once())->method('close');
+
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $server = new SecureServer($tcp, $loop, array());
+
+        $server->close();
+    }
+
+    public function testConnectionWillBeEndedWithErrorIfItIsNotAStream()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $tcp = new TcpServer(0, $loop);
+
+        $connection = $this->getMockBuilder('React\Socket\ConnectionInterface')->getMock();
+        $connection->expects($this->once())->method('end');
+
+        $server = new SecureServer($tcp, $loop, array());
+
+        $server->on('error', $this->expectCallableOnce());
+
+        $tcp->emit('connection', array($connection));
+    }
+
+    public function testSocketErrorWillBeForwarded()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $tcp = new TcpServer(0, $loop);
+
+        $server = new SecureServer($tcp, $loop, array());
+
+        $server->on('error', $this->expectCallableOnce());
+
+        $tcp->emit('error', array(new \RuntimeException('test')));
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/ServerTest.php b/assets/php/vendor/react/socket/tests/ServerTest.php
new file mode 100644
index 0000000..14fdb2c
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/ServerTest.php
@@ -0,0 +1,173 @@
+<?php
+
+namespace React\Tests\Socket;
+
+use React\EventLoop\Factory;
+use React\Socket\Server;
+use React\Socket\TcpConnector;
+use React\Socket\UnixConnector;
+use Clue\React\Block;
+use React\Socket\ConnectionInterface;
+
+class ServerTest extends TestCase
+{
+    const TIMEOUT = 0.1;
+
+    public function testCreateServerWithZeroPortAssignsRandomPort()
+    {
+        $loop = Factory::create();
+
+        $server = new Server(0, $loop);
+        $this->assertNotEquals(0, $server->getAddress());
+        $server->close();
+    }
+
+    /**
+     * @expectedException InvalidArgumentException
+     */
+    public function testConstructorThrowsForInvalidUri()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $server = new Server('invalid URI', $loop);
+    }
+
+    public function testConstructorCreatesExpectedTcpServer()
+    {
+        $loop = Factory::create();
+
+        $server = new Server(0, $loop);
+
+        $connector = new TcpConnector($loop);
+        $connector->connect($server->getAddress())
+            ->then($this->expectCallableOnce(), $this->expectCallableNever());
+
+        $connection = Block\await($connector->connect($server->getAddress()), $loop, self::TIMEOUT);
+
+        $connection->close();
+        $server->close();
+    }
+
+    public function testConstructorCreatesExpectedUnixServer()
+    {
+        $loop = Factory::create();
+
+        $server = new Server($this->getRandomSocketUri(), $loop);
+
+        $connector = new UnixConnector($loop);
+        $connector->connect($server->getAddress())
+            ->then($this->expectCallableOnce(), $this->expectCallableNever());
+
+        $connection = Block\await($connector->connect($server->getAddress()), $loop, self::TIMEOUT);
+
+        $connection->close();
+        $server->close();
+    }
+
+    public function testEmitsConnectionForNewConnection()
+    {
+        $loop = Factory::create();
+
+        $server = new Server(0, $loop);
+        $server->on('connection', $this->expectCallableOnce());
+
+        $client = stream_socket_client($server->getAddress());
+
+        Block\sleep(0.1, $loop);
+    }
+
+    public function testDoesNotEmitConnectionForNewConnectionToPausedServer()
+    {
+        $loop = Factory::create();
+
+        $server = new Server(0, $loop);
+        $server->pause();
+        $server->on('connection', $this->expectCallableNever());
+
+        $client = stream_socket_client($server->getAddress());
+
+        Block\sleep(0.1, $loop);
+    }
+
+    public function testDoesEmitConnectionForNewConnectionToResumedServer()
+    {
+        $loop = Factory::create();
+
+        $server = new Server(0, $loop);
+        $server->pause();
+        $server->on('connection', $this->expectCallableOnce());
+
+        $client = stream_socket_client($server->getAddress());
+
+        Block\sleep(0.1, $loop);
+
+        $server->resume();
+        Block\sleep(0.1, $loop);
+    }
+
+    public function testDoesNotAllowConnectionToClosedServer()
+    {
+        $loop = Factory::create();
+
+        $server = new Server(0, $loop);
+        $server->on('connection', $this->expectCallableNever());
+        $address = $server->getAddress();
+        $server->close();
+
+        $client = @stream_socket_client($address);
+
+        Block\sleep(0.1, $loop);
+
+        $this->assertFalse($client);
+    }
+
+    public function testEmitsConnectionWithInheritedContextOptions()
+    {
+        if (defined('HHVM_VERSION') && version_compare(HHVM_VERSION, '3.13', '<')) {
+            // https://3v4l.org/hB4Tc
+            $this->markTestSkipped('Not supported on legacy HHVM < 3.13');
+        }
+
+        $loop = Factory::create();
+
+        $server = new Server(0, $loop, array(
+            'backlog' => 4
+        ));
+
+        $all = null;
+        $server->on('connection', function (ConnectionInterface $conn) use (&$all) {
+            $all = stream_context_get_options($conn->stream);
+        });
+
+        $client = stream_socket_client($server->getAddress());
+
+        Block\sleep(0.1, $loop);
+
+        $this->assertEquals(array('socket' => array('backlog' => 4)), $all);
+    }
+
+    public function testDoesNotEmitSecureConnectionForNewPlainConnection()
+    {
+        if (!function_exists('stream_socket_enable_crypto')) {
+            $this->markTestSkipped('Not supported on your platform (outdated HHVM?)');
+        }
+
+        $loop = Factory::create();
+
+        $server = new Server('tls://127.0.0.1:0', $loop, array(
+            'tls' => array(
+                'local_cert' => __DIR__ . '/../examples/localhost.pem'
+            )
+        ));
+        $server->on('connection', $this->expectCallableNever());
+
+        $client = stream_socket_client(str_replace('tls://', '', $server->getAddress()));
+
+        Block\sleep(0.1, $loop);
+    }
+
+    private function getRandomSocketUri()
+    {
+        return "unix://" . sys_get_temp_dir() . DIRECTORY_SEPARATOR . uniqid(rand(), true) . '.sock';
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/Stub/CallableStub.php b/assets/php/vendor/react/socket/tests/Stub/CallableStub.php
new file mode 100644
index 0000000..1b197eb
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/Stub/CallableStub.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace React\Tests\Socket\Stub;
+
+class CallableStub
+{
+    public function __invoke()
+    {
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/Stub/ConnectionStub.php b/assets/php/vendor/react/socket/tests/Stub/ConnectionStub.php
new file mode 100644
index 0000000..844b2ad
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/Stub/ConnectionStub.php
@@ -0,0 +1,63 @@
+<?php
+
+namespace React\Tests\Socket\Stub;
+
+use Evenement\EventEmitter;
+use React\Socket\ConnectionInterface;
+use React\Stream\WritableStreamInterface;
+use React\Stream\Util;
+
+class ConnectionStub extends EventEmitter implements ConnectionInterface
+{
+    private $data = '';
+
+    public function isReadable()
+    {
+        return true;
+    }
+
+    public function isWritable()
+    {
+        return true;
+    }
+
+    public function pause()
+    {
+    }
+
+    public function resume()
+    {
+    }
+
+    public function pipe(WritableStreamInterface $dest, array $options = array())
+    {
+        Util::pipe($this, $dest, $options);
+
+        return $dest;
+    }
+
+    public function write($data)
+    {
+        $this->data .= $data;
+
+        return true;
+    }
+
+    public function end($data = null)
+    {
+    }
+
+    public function close()
+    {
+    }
+
+    public function getData()
+    {
+        return $this->data;
+    }
+
+    public function getRemoteAddress()
+    {
+        return '127.0.0.1';
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/Stub/ServerStub.php b/assets/php/vendor/react/socket/tests/Stub/ServerStub.php
new file mode 100644
index 0000000..d9e74f4
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/Stub/ServerStub.php
@@ -0,0 +1,18 @@
+<?php
+
+namespace React\Tests\Socket\Stub;
+
+use Evenement\EventEmitter;
+use React\Socket\ServerInterface;
+
+class ServerStub extends EventEmitter implements ServerInterface
+{
+    public function getAddress()
+    {
+        return '127.0.0.1:80';
+    }
+
+    public function close()
+    {
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/TcpConnectorTest.php b/assets/php/vendor/react/socket/tests/TcpConnectorTest.php
new file mode 100644
index 0000000..e3575a7
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/TcpConnectorTest.php
@@ -0,0 +1,255 @@
+<?php
+
+namespace React\Tests\Socket;
+
+use Clue\React\Block;
+use React\EventLoop\Factory;
+use React\Socket\ConnectionInterface;
+use React\Socket\TcpConnector;
+use React\Socket\TcpServer;
+
+class TcpConnectorTest extends TestCase
+{
+    const TIMEOUT = 0.1;
+
+    /** @test */
+    public function connectionToEmptyPortShouldFail()
+    {
+        $loop = Factory::create();
+
+        $connector = new TcpConnector($loop);
+        $connector->connect('127.0.0.1:9999')
+                ->then($this->expectCallableNever(), $this->expectCallableOnce());
+
+        $loop->run();
+    }
+
+    /** @test */
+    public function connectionToTcpServerShouldAddResourceToLoop()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $connector = new TcpConnector($loop);
+
+        $server = new TcpServer(0, $loop);
+
+        $valid = false;
+        $loop->expects($this->once())->method('addWriteStream')->with($this->callback(function ($arg) use (&$valid) {
+            $valid = is_resource($arg);
+            return true;
+        }));
+        $connector->connect($server->getAddress());
+
+        $this->assertTrue($valid);
+    }
+
+    /** @test */
+    public function connectionToTcpServerShouldSucceed()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(9999, $loop);
+        $server->on('connection', $this->expectCallableOnce());
+        $server->on('connection', array($server, 'close'));
+
+        $connector = new TcpConnector($loop);
+
+        $connection = Block\await($connector->connect('127.0.0.1:9999'), $loop, self::TIMEOUT);
+
+        $this->assertInstanceOf('React\Socket\ConnectionInterface', $connection);
+
+        $connection->close();
+    }
+
+    /** @test */
+    public function connectionToTcpServerShouldSucceedWithRemoteAdressSameAsTarget()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(9999, $loop);
+        $server->on('connection', array($server, 'close'));
+
+        $connector = new TcpConnector($loop);
+
+        $connection = Block\await($connector->connect('127.0.0.1:9999'), $loop, self::TIMEOUT);
+        /* @var $connection ConnectionInterface */
+
+        $this->assertEquals('tcp://127.0.0.1:9999', $connection->getRemoteAddress());
+
+        $connection->close();
+    }
+
+    /** @test */
+    public function connectionToTcpServerShouldSucceedWithLocalAdressOnLocalhost()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(9999, $loop);
+        $server->on('connection', array($server, 'close'));
+
+        $connector = new TcpConnector($loop);
+
+        $connection = Block\await($connector->connect('127.0.0.1:9999'), $loop, self::TIMEOUT);
+        /* @var $connection ConnectionInterface */
+
+        $this->assertContains('tcp://127.0.0.1:', $connection->getLocalAddress());
+        $this->assertNotEquals('tcp://127.0.0.1:9999', $connection->getLocalAddress());
+
+        $connection->close();
+    }
+
+    /** @test */
+    public function connectionToTcpServerShouldSucceedWithNullAddressesAfterConnectionClosed()
+    {
+        $loop = Factory::create();
+
+        $server = new TcpServer(9999, $loop);
+        $server->on('connection', array($server, 'close'));
+
+        $connector = new TcpConnector($loop);
+
+        $connection = Block\await($connector->connect('127.0.0.1:9999'), $loop, self::TIMEOUT);
+        /* @var $connection ConnectionInterface */
+
+        $connection->close();
+
+        $this->assertNull($connection->getRemoteAddress());
+        $this->assertNull($connection->getLocalAddress());
+    }
+
+    /** @test */
+    public function connectionToTcpServerWillCloseWhenOtherSideCloses()
+    {
+        $loop = Factory::create();
+
+        // immediately close connection and server once connection is in
+        $server = new TcpServer(0, $loop);
+        $server->on('connection', function (ConnectionInterface $conn) use ($server) {
+            $conn->close();
+            $server->close();
+        });
+
+        $once = $this->expectCallableOnce();
+        $connector = new TcpConnector($loop);
+        $connector->connect($server->getAddress())->then(function (ConnectionInterface $conn) use ($once) {
+            $conn->write('hello');
+            $conn->on('close', $once);
+        });
+
+        $loop->run();
+    }
+
+    /** @test */
+    public function connectionToEmptyIp6PortShouldFail()
+    {
+        $loop = Factory::create();
+
+        $connector = new TcpConnector($loop);
+        $connector
+            ->connect('[::1]:9999')
+            ->then($this->expectCallableNever(), $this->expectCallableOnce());
+
+        $loop->run();
+    }
+
+    /** @test */
+    public function connectionToIp6TcpServerShouldSucceed()
+    {
+        $loop = Factory::create();
+
+        try {
+            $server = new TcpServer('[::1]:9999', $loop);
+        } catch (\Exception $e) {
+            $this->markTestSkipped('Unable to start IPv6 server socket (IPv6 not supported on this system?)');
+        }
+
+        $server->on('connection', $this->expectCallableOnce());
+        $server->on('connection', array($server, 'close'));
+
+        $connector = new TcpConnector($loop);
+
+        $connection = Block\await($connector->connect('[::1]:9999'), $loop, self::TIMEOUT);
+        /* @var $connection ConnectionInterface */
+
+        $this->assertEquals('tcp://[::1]:9999', $connection->getRemoteAddress());
+
+        $this->assertContains('tcp://[::1]:', $connection->getLocalAddress());
+        $this->assertNotEquals('tcp://[::1]:9999', $connection->getLocalAddress());
+
+        $connection->close();
+    }
+
+    /** @test */
+    public function connectionToHostnameShouldFailImmediately()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $connector = new TcpConnector($loop);
+        $connector->connect('www.google.com:80')->then(
+            $this->expectCallableNever(),
+            $this->expectCallableOnce()
+        );
+    }
+
+    /** @test */
+    public function connectionToInvalidPortShouldFailImmediately()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $connector = new TcpConnector($loop);
+        $connector->connect('255.255.255.255:12345678')->then(
+            $this->expectCallableNever(),
+            $this->expectCallableOnce()
+        );
+    }
+
+    /** @test */
+    public function connectionToInvalidSchemeShouldFailImmediately()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+
+        $connector = new TcpConnector($loop);
+        $connector->connect('tls://google.com:443')->then(
+            $this->expectCallableNever(),
+            $this->expectCallableOnce()
+        );
+    }
+
+    /** @test */
+    public function cancellingConnectionShouldRemoveResourceFromLoopAndCloseResource()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $connector = new TcpConnector($loop);
+
+        $server = new TcpServer(0, $loop);
+
+        $loop->expects($this->once())->method('addWriteStream');
+        $promise = $connector->connect($server->getAddress());
+
+        $resource = null;
+        $valid = false;
+        $loop->expects($this->once())->method('removeWriteStream')->with($this->callback(function ($arg) use (&$resource, &$valid) {
+            $resource = $arg;
+            $valid = is_resource($arg);
+            return true;
+        }));
+        $promise->cancel();
+
+        $this->assertTrue($valid);
+        $this->assertFalse(is_resource($resource));
+    }
+
+    /** @test */
+    public function cancellingConnectionShouldRejectPromise()
+    {
+        $loop = Factory::create();
+        $connector = new TcpConnector($loop);
+
+        $server = new TcpServer(0, $loop);
+
+        $promise = $connector->connect($server->getAddress());
+        $promise->cancel();
+
+        $this->setExpectedException('RuntimeException', 'Cancelled');
+        Block\await($promise, $loop);
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/TcpServerTest.php b/assets/php/vendor/react/socket/tests/TcpServerTest.php
new file mode 100644
index 0000000..72b3c28
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/TcpServerTest.php
@@ -0,0 +1,285 @@
+<?php
+
+namespace React\Tests\Socket;
+
+use Clue\React\Block;
+use React\EventLoop\Factory;
+use React\Socket\TcpServer;
+use React\Stream\DuplexResourceStream;
+
+class TcpServerTest extends TestCase
+{
+    private $loop;
+    private $server;
+    private $port;
+
+    private function createLoop()
+    {
+        return Factory::create();
+    }
+
+    /**
+     * @covers React\Socket\TcpServer::__construct
+     * @covers React\Socket\TcpServer::getAddress
+     */
+    public function setUp()
+    {
+        $this->loop = $this->createLoop();
+        $this->server = new TcpServer(0, $this->loop);
+
+        $this->port = parse_url($this->server->getAddress(), PHP_URL_PORT);
+    }
+
+    /**
+     * @covers React\Socket\TcpServer::handleConnection
+     */
+    public function testConnection()
+    {
+        $client = stream_socket_client('tcp://localhost:'.$this->port);
+
+        $this->server->on('connection', $this->expectCallableOnce());
+
+        $this->tick();
+    }
+
+    /**
+     * @covers React\Socket\TcpServer::handleConnection
+     */
+    public function testConnectionWithManyClients()
+    {
+        $client1 = stream_socket_client('tcp://localhost:'.$this->port);
+        $client2 = stream_socket_client('tcp://localhost:'.$this->port);
+        $client3 = stream_socket_client('tcp://localhost:'.$this->port);
+
+        $this->server->on('connection', $this->expectCallableExactly(3));
+        $this->tick();
+        $this->tick();
+        $this->tick();
+    }
+
+    public function testDataEventWillNotBeEmittedWhenClientSendsNoData()
+    {
+        $client = stream_socket_client('tcp://localhost:'.$this->port);
+
+        $mock = $this->expectCallableNever();
+
+        $this->server->on('connection', function ($conn) use ($mock) {
+            $conn->on('data', $mock);
+        });
+        $this->tick();
+        $this->tick();
+    }
+
+    public function testDataWillBeEmittedWithDataClientSends()
+    {
+        $client = stream_socket_client('tcp://localhost:'.$this->port);
+
+        fwrite($client, "foo\n");
+
+        $mock = $this->expectCallableOnceWith("foo\n");
+
+        $this->server->on('connection', function ($conn) use ($mock) {
+            $conn->on('data', $mock);
+        });
+        $this->tick();
+        $this->tick();
+    }
+
+    public function testDataWillBeEmittedEvenWhenClientShutsDownAfterSending()
+    {
+        $client = stream_socket_client('tcp://localhost:' . $this->port);
+        fwrite($client, "foo\n");
+        stream_socket_shutdown($client, STREAM_SHUT_WR);
+
+        $mock = $this->expectCallableOnceWith("foo\n");
+
+        $this->server->on('connection', function ($conn) use ($mock) {
+            $conn->on('data', $mock);
+        });
+        $this->tick();
+        $this->tick();
+    }
+
+    public function testLoopWillEndWhenServerIsClosed()
+    {
+        // explicitly unset server because we already call close()
+        $this->server->close();
+        $this->server = null;
+
+        $this->loop->run();
+
+        // if we reach this, then everything is good
+        $this->assertNull(null);
+    }
+
+    public function testCloseTwiceIsNoOp()
+    {
+        $this->server->close();
+        $this->server->close();
+
+        // if we reach this, then everything is good
+        $this->assertNull(null);
+    }
+
+    public function testGetAddressAfterCloseReturnsNull()
+    {
+        $this->server->close();
+        $this->assertNull($this->server->getAddress());
+    }
+
+    public function testLoopWillEndWhenServerIsClosedAfterSingleConnection()
+    {
+        $client = stream_socket_client('tcp://localhost:' . $this->port);
+
+        // explicitly unset server because we only accept a single connection
+        // and then already call close()
+        $server = $this->server;
+        $this->server = null;
+
+        $server->on('connection', function ($conn) use ($server) {
+            $conn->close();
+            $server->close();
+        });
+
+        $this->loop->run();
+
+        // if we reach this, then everything is good
+        $this->assertNull(null);
+    }
+
+    public function testDataWillBeEmittedInMultipleChunksWhenClientSendsExcessiveAmounts()
+    {
+        $client = stream_socket_client('tcp://localhost:' . $this->port);
+        $stream = new DuplexResourceStream($client, $this->loop);
+
+        $bytes = 1024 * 1024;
+        $stream->end(str_repeat('*', $bytes));
+
+        $mock = $this->expectCallableOnce();
+
+        // explicitly unset server because we only accept a single connection
+        // and then already call close()
+        $server = $this->server;
+        $this->server = null;
+
+        $received = 0;
+        $server->on('connection', function ($conn) use ($mock, &$received, $server) {
+            // count number of bytes received
+            $conn->on('data', function ($data) use (&$received) {
+                $received += strlen($data);
+            });
+
+            $conn->on('end', $mock);
+
+            // do not await any further connections in order to let the loop terminate
+            $server->close();
+        });
+
+        $this->loop->run();
+
+        $this->assertEquals($bytes, $received);
+    }
+
+    public function testConnectionDoesNotEndWhenClientDoesNotClose()
+    {
+        $client = stream_socket_client('tcp://localhost:'.$this->port);
+
+        $mock = $this->expectCallableNever();
+
+        $this->server->on('connection', function ($conn) use ($mock) {
+            $conn->on('end', $mock);
+        });
+        $this->tick();
+        $this->tick();
+    }
+
+    /**
+     * @covers React\Socket\Connection::end
+     */
+    public function testConnectionDoesEndWhenClientCloses()
+    {
+        $client = stream_socket_client('tcp://localhost:'.$this->port);
+
+        fclose($client);
+
+        $mock = $this->expectCallableOnce();
+
+        $this->server->on('connection', function ($conn) use ($mock) {
+            $conn->on('end', $mock);
+        });
+        $this->tick();
+        $this->tick();
+    }
+
+    public function testCtorAddsResourceToLoop()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('addReadStream');
+
+        $server = new TcpServer(0, $loop);
+    }
+
+    public function testResumeWithoutPauseIsNoOp()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('addReadStream');
+
+        $server = new TcpServer(0, $loop);
+        $server->resume();
+    }
+
+    public function testPauseRemovesResourceFromLoop()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('removeReadStream');
+
+        $server = new TcpServer(0, $loop);
+        $server->pause();
+    }
+
+    public function testPauseAfterPauseIsNoOp()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('removeReadStream');
+
+        $server = new TcpServer(0, $loop);
+        $server->pause();
+        $server->pause();
+    }
+
+    public function testCloseRemovesResourceFromLoop()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('removeReadStream');
+
+        $server = new TcpServer(0, $loop);
+        $server->close();
+    }
+
+    /**
+     * @expectedException RuntimeException
+     */
+    public function testListenOnBusyPortThrows()
+    {
+        if (DIRECTORY_SEPARATOR === '\\') {
+            $this->markTestSkipped('Windows supports listening on same port multiple times');
+        }
+
+        $another = new TcpServer($this->port, $this->loop);
+    }
+
+    /**
+     * @covers React\Socket\TcpServer::close
+     */
+    public function tearDown()
+    {
+        if ($this->server) {
+            $this->server->close();
+        }
+    }
+
+    private function tick()
+    {
+        Block\sleep(0, $this->loop);
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/TestCase.php b/assets/php/vendor/react/socket/tests/TestCase.php
new file mode 100644
index 0000000..e87fc2f
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/TestCase.php
@@ -0,0 +1,101 @@
+<?php
+
+namespace React\Tests\Socket;
+
+use React\Stream\ReadableStreamInterface;
+use React\EventLoop\LoopInterface;
+use Clue\React\Block;
+use React\Promise\Promise;
+use PHPUnit\Framework\TestCase as BaseTestCase;
+
+class TestCase extends BaseTestCase
+{
+    protected function expectCallableExactly($amount)
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->exactly($amount))
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    protected function expectCallableOnce()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    protected function expectCallableOnceWith($value)
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($value);
+
+        return $mock;
+    }
+
+    protected function expectCallableNever()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->never())
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    protected function createCallableMock()
+    {
+        return $this->getMockBuilder('React\Tests\Socket\Stub\CallableStub')->getMock();
+    }
+
+    protected function buffer(ReadableStreamInterface $stream, LoopInterface $loop, $timeout)
+    {
+        if (!$stream->isReadable()) {
+            return '';
+        }
+
+        return Block\await(new Promise(
+            function ($resolve, $reject) use ($stream) {
+                $buffer = '';
+                $stream->on('data', function ($chunk) use (&$buffer) {
+                    $buffer .= $chunk;
+                });
+
+                $stream->on('error', $reject);
+
+                $stream->on('close', function () use (&$buffer, $resolve) {
+                    $resolve($buffer);
+                });
+            },
+            function () use ($stream) {
+                $stream->close();
+                throw new \RuntimeException();
+            }
+        ), $loop, $timeout);
+    }
+
+    public function setExpectedException($exception, $exceptionMessage = '', $exceptionCode = null)
+    {
+        if (method_exists($this, 'expectException')) {
+            // PHPUnit 5+
+            $this->expectException($exception);
+            if ($exceptionMessage !== '') {
+                $this->expectExceptionMessage($exceptionMessage);
+            }
+            if ($exceptionCode !== null) {
+                $this->expectExceptionCode($exceptionCode);
+            }
+        } else {
+            // legacy PHPUnit 4
+            parent::setExpectedException($exception, $exceptionMessage, $exceptionCode);
+        }
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/TimeoutConnectorTest.php b/assets/php/vendor/react/socket/tests/TimeoutConnectorTest.php
new file mode 100644
index 0000000..64787d9
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/TimeoutConnectorTest.php
@@ -0,0 +1,103 @@
+<?php
+
+namespace React\Tests\Socket;
+
+use React\Socket\TimeoutConnector;
+use React\Promise;
+use React\EventLoop\Factory;
+
+class TimeoutConnectorTest extends TestCase
+{
+    public function testRejectsOnTimeout()
+    {
+        $promise = new Promise\Promise(function () { });
+
+        $connector = $this->getMockBuilder('React\Socket\ConnectorInterface')->getMock();
+        $connector->expects($this->once())->method('connect')->with('google.com:80')->will($this->returnValue($promise));
+
+        $loop = Factory::create();
+
+        $timeout = new TimeoutConnector($connector, 0.01, $loop);
+
+        $timeout->connect('google.com:80')->then(
+            $this->expectCallableNever(),
+            $this->expectCallableOnce()
+        );
+
+        $loop->run();
+    }
+
+    public function testRejectsWhenConnectorRejects()
+    {
+        $promise = Promise\reject(new \RuntimeException());
+
+        $connector = $this->getMockBuilder('React\Socket\ConnectorInterface')->getMock();
+        $connector->expects($this->once())->method('connect')->with('google.com:80')->will($this->returnValue($promise));
+
+        $loop = Factory::create();
+
+        $timeout = new TimeoutConnector($connector, 5.0, $loop);
+
+        $timeout->connect('google.com:80')->then(
+            $this->expectCallableNever(),
+            $this->expectCallableOnce()
+        );
+
+        $loop->run();
+    }
+
+    public function testResolvesWhenConnectorResolves()
+    {
+        $promise = Promise\resolve();
+
+        $connector = $this->getMockBuilder('React\Socket\ConnectorInterface')->getMock();
+        $connector->expects($this->once())->method('connect')->with('google.com:80')->will($this->returnValue($promise));
+
+        $loop = Factory::create();
+
+        $timeout = new TimeoutConnector($connector, 5.0, $loop);
+
+        $timeout->connect('google.com:80')->then(
+            $this->expectCallableOnce(),
+            $this->expectCallableNever()
+        );
+
+        $loop->run();
+    }
+
+    public function testRejectsAndCancelsPendingPromiseOnTimeout()
+    {
+        $promise = new Promise\Promise(function () { }, $this->expectCallableOnce());
+
+        $connector = $this->getMockBuilder('React\Socket\ConnectorInterface')->getMock();
+        $connector->expects($this->once())->method('connect')->with('google.com:80')->will($this->returnValue($promise));
+
+        $loop = Factory::create();
+
+        $timeout = new TimeoutConnector($connector, 0.01, $loop);
+
+        $timeout->connect('google.com:80')->then(
+            $this->expectCallableNever(),
+            $this->expectCallableOnce()
+        );
+
+        $loop->run();
+    }
+
+    public function testCancelsPendingPromiseOnCancel()
+    {
+        $promise = new Promise\Promise(function () { }, function () { throw new \Exception(); });
+
+        $connector = $this->getMockBuilder('React\Socket\ConnectorInterface')->getMock();
+        $connector->expects($this->once())->method('connect')->with('google.com:80')->will($this->returnValue($promise));
+
+        $loop = Factory::create();
+
+        $timeout = new TimeoutConnector($connector, 0.01, $loop);
+
+        $out = $timeout->connect('google.com:80');
+        $out->cancel();
+
+        $out->then($this->expectCallableNever(), $this->expectCallableOnce());
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/UnixConnectorTest.php b/assets/php/vendor/react/socket/tests/UnixConnectorTest.php
new file mode 100644
index 0000000..1564064
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/UnixConnectorTest.php
@@ -0,0 +1,64 @@
+<?php
+
+namespace React\Tests\Socket;
+
+use React\Socket\ConnectionInterface;
+use React\Socket\UnixConnector;
+
+class UnixConnectorTest extends TestCase
+{
+    private $loop;
+    private $connector;
+
+    public function setUp()
+    {
+        $this->loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $this->connector = new UnixConnector($this->loop);
+    }
+
+    public function testInvalid()
+    {
+        $promise = $this->connector->connect('google.com:80');
+        $promise->then(null, $this->expectCallableOnce());
+    }
+
+    public function testInvalidScheme()
+    {
+        $promise = $this->connector->connect('tcp://google.com:80');
+        $promise->then(null, $this->expectCallableOnce());
+    }
+
+    public function testValid()
+    {
+        // random unix domain socket path
+        $path = sys_get_temp_dir() . '/test' . uniqid() . '.sock';
+
+        // temporarily create unix domain socket server to connect to
+        $server = stream_socket_server('unix://' . $path, $errno, $errstr);
+
+        // skip test if we can not create a test server (Windows etc.)
+        if (!$server) {
+            $this->markTestSkipped('Unable to create socket "' . $path . '": ' . $errstr . '(' . $errno .')');
+            return;
+        }
+
+        // tests succeeds if we get notified of successful connection
+        $promise = $this->connector->connect($path);
+        $promise->then($this->expectCallableOnce());
+
+        // remember remote and local address of this connection and close again
+        $remote = $local = false;
+        $promise->then(function(ConnectionInterface $conn) use (&$remote, &$local) {
+            $remote = $conn->getRemoteAddress();
+            $local = $conn->getLocalAddress();
+            $conn->close();
+        });
+
+        // clean up server
+        fclose($server);
+        unlink($path);
+
+        $this->assertNull($local);
+        $this->assertEquals('unix://' . $path, $remote);
+    }
+}
diff --git a/assets/php/vendor/react/socket/tests/UnixServerTest.php b/assets/php/vendor/react/socket/tests/UnixServerTest.php
new file mode 100644
index 0000000..10f7e4f
--- /dev/null
+++ b/assets/php/vendor/react/socket/tests/UnixServerTest.php
@@ -0,0 +1,283 @@
+<?php
+
+namespace React\Tests\Socket;
+
+use Clue\React\Block;
+use React\EventLoop\Factory;
+use React\Socket\UnixServer;
+use React\Stream\DuplexResourceStream;
+
+class UnixServerTest extends TestCase
+{
+    private $loop;
+    private $server;
+    private $uds;
+
+    /**
+     * @covers React\Socket\UnixServer::__construct
+     * @covers React\Socket\UnixServer::getAddress
+     */
+    public function setUp()
+    {
+        $this->loop = Factory::create();
+        $this->uds = $this->getRandomSocketUri();
+        $this->server = new UnixServer($this->uds, $this->loop);
+    }
+
+    /**
+     * @covers React\Socket\UnixServer::handleConnection
+     */
+    public function testConnection()
+    {
+        $client = stream_socket_client($this->uds);
+
+        $this->server->on('connection', $this->expectCallableOnce());
+        $this->tick();
+    }
+
+    /**
+     * @covers React\Socket\UnixServer::handleConnection
+     */
+    public function testConnectionWithManyClients()
+    {
+        $client1 = stream_socket_client($this->uds);
+        $client2 = stream_socket_client($this->uds);
+        $client3 = stream_socket_client($this->uds);
+
+        $this->server->on('connection', $this->expectCallableExactly(3));
+        $this->tick();
+        $this->tick();
+        $this->tick();
+    }
+
+    public function testDataEventWillNotBeEmittedWhenClientSendsNoData()
+    {
+        $client = stream_socket_client($this->uds);
+
+        $mock = $this->expectCallableNever();
+
+        $this->server->on('connection', function ($conn) use ($mock) {
+            $conn->on('data', $mock);
+        });
+        $this->tick();
+        $this->tick();
+    }
+
+    public function testDataWillBeEmittedWithDataClientSends()
+    {
+        $client = stream_socket_client($this->uds);
+
+        fwrite($client, "foo\n");
+
+        $mock = $this->expectCallableOnceWith("foo\n");
+
+        $this->server->on('connection', function ($conn) use ($mock) {
+            $conn->on('data', $mock);
+        });
+        $this->tick();
+        $this->tick();
+    }
+
+    public function testDataWillBeEmittedEvenWhenClientShutsDownAfterSending()
+    {
+        $client = stream_socket_client($this->uds);
+        fwrite($client, "foo\n");
+        stream_socket_shutdown($client, STREAM_SHUT_WR);
+
+        $mock = $this->expectCallableOnceWith("foo\n");
+
+        $this->server->on('connection', function ($conn) use ($mock) {
+            $conn->on('data', $mock);
+        });
+        $this->tick();
+        $this->tick();
+    }
+
+    public function testLoopWillEndWhenServerIsClosed()
+    {
+        // explicitly unset server because we already call close()
+        $this->server->close();
+        $this->server = null;
+
+        $this->loop->run();
+
+        // if we reach this, then everything is good
+        $this->assertNull(null);
+    }
+
+    public function testCloseTwiceIsNoOp()
+    {
+        $this->server->close();
+        $this->server->close();
+
+        // if we reach this, then everything is good
+        $this->assertNull(null);
+    }
+
+    public function testGetAddressAfterCloseReturnsNull()
+    {
+        $this->server->close();
+        $this->assertNull($this->server->getAddress());
+    }
+
+    public function testLoopWillEndWhenServerIsClosedAfterSingleConnection()
+    {
+        $client = stream_socket_client($this->uds);
+
+        // explicitly unset server because we only accept a single connection
+        // and then already call close()
+        $server = $this->server;
+        $this->server = null;
+
+        $server->on('connection', function ($conn) use ($server) {
+            $conn->close();
+            $server->close();
+        });
+
+        $this->loop->run();
+
+        // if we reach this, then everything is good
+        $this->assertNull(null);
+    }
+
+    public function testDataWillBeEmittedInMultipleChunksWhenClientSendsExcessiveAmounts()
+    {
+        $client = stream_socket_client($this->uds);
+        $stream = new DuplexResourceStream($client, $this->loop);
+
+        $bytes = 1024 * 1024;
+        $stream->end(str_repeat('*', $bytes));
+
+        $mock = $this->expectCallableOnce();
+
+        // explicitly unset server because we only accept a single connection
+        // and then already call close()
+        $server = $this->server;
+        $this->server = null;
+
+        $received = 0;
+        $server->on('connection', function ($conn) use ($mock, &$received, $server) {
+            // count number of bytes received
+            $conn->on('data', function ($data) use (&$received) {
+                $received += strlen($data);
+            });
+
+            $conn->on('end', $mock);
+
+            // do not await any further connections in order to let the loop terminate
+            $server->close();
+        });
+
+        $this->loop->run();
+
+        $this->assertEquals($bytes, $received);
+    }
+
+    public function testConnectionDoesNotEndWhenClientDoesNotClose()
+    {
+        $client = stream_socket_client($this->uds);
+
+        $mock = $this->expectCallableNever();
+
+        $this->server->on('connection', function ($conn) use ($mock) {
+            $conn->on('end', $mock);
+        });
+        $this->tick();
+        $this->tick();
+    }
+
+    /**
+     * @covers React\Socket\Connection::end
+     */
+    public function testConnectionDoesEndWhenClientCloses()
+    {
+        $client = stream_socket_client($this->uds);
+
+        fclose($client);
+
+        $mock = $this->expectCallableOnce();
+
+        $this->server->on('connection', function ($conn) use ($mock) {
+            $conn->on('end', $mock);
+        });
+        $this->tick();
+        $this->tick();
+    }
+
+    public function testCtorAddsResourceToLoop()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('addReadStream');
+
+        $server = new UnixServer($this->getRandomSocketUri(), $loop);
+    }
+
+    public function testResumeWithoutPauseIsNoOp()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('addReadStream');
+
+        $server = new UnixServer($this->getRandomSocketUri(), $loop);
+        $server->resume();
+    }
+
+    public function testPauseRemovesResourceFromLoop()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('removeReadStream');
+
+        $server = new UnixServer($this->getRandomSocketUri(), $loop);
+        $server->pause();
+    }
+
+    public function testPauseAfterPauseIsNoOp()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('removeReadStream');
+
+        $server = new UnixServer($this->getRandomSocketUri(), $loop);
+        $server->pause();
+        $server->pause();
+    }
+
+    public function testCloseRemovesResourceFromLoop()
+    {
+        $loop = $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+        $loop->expects($this->once())->method('removeReadStream');
+
+        $server = new UnixServer($this->getRandomSocketUri(), $loop);
+        $server->close();
+    }
+
+    /**
+     * @expectedException RuntimeException
+     */
+    public function testListenOnBusyPortThrows()
+    {
+        if (DIRECTORY_SEPARATOR === '\\') {
+            $this->markTestSkipped('Windows supports listening on same port multiple times');
+        }
+
+        $another = new UnixServer($this->uds, $this->loop);
+    }
+
+    /**
+     * @covers React\Socket\UnixServer::close
+     */
+    public function tearDown()
+    {
+        if ($this->server) {
+            $this->server->close();
+        }
+    }
+
+    private function getRandomSocketUri()
+    {
+        return "unix://" . sys_get_temp_dir() . DIRECTORY_SEPARATOR . uniqid(rand(), true) . '.sock';
+    }
+
+    private function tick()
+    {
+        Block\sleep(0, $this->loop);
+    }
+}
diff --git a/assets/php/vendor/react/stream/.gitignore b/assets/php/vendor/react/stream/.gitignore
new file mode 100644
index 0000000..987e2a2
--- /dev/null
+++ b/assets/php/vendor/react/stream/.gitignore
@@ -0,0 +1,2 @@
+composer.lock
+vendor
diff --git a/assets/php/vendor/react/stream/.travis.yml b/assets/php/vendor/react/stream/.travis.yml
new file mode 100644
index 0000000..f4e3376
--- /dev/null
+++ b/assets/php/vendor/react/stream/.travis.yml
@@ -0,0 +1,50 @@
+language: php
+
+php:
+# - 5.3 # requires old distro, see below
+  - 5.4
+  - 5.5
+  - 5.6
+  - 7.0
+# - 7.0 # Mac OS X test setup, ignore errors, see below
+  - 7.1
+  - 7.2
+  - nightly # ignore errors, see below
+  - hhvm # ignore errors, see below
+
+# lock distro so new future defaults will not break the build
+dist: trusty
+
+matrix:
+  include:
+    - php: 5.3
+      dist: precise
+  include:
+    - os: osx
+      language: generic
+      php: 7.0 # just to look right on travis
+      env:
+        - PACKAGE: php70
+  allow_failures:
+    - php: nightly
+    - php: hhvm
+    - os: osx
+
+install:
+  # OSX install inspired by https://github.com/kiler129/TravisCI-OSX-PHP
+  - |
+    if [[ "${TRAVIS_OS_NAME}" == "osx" ]]; then 
+      brew tap homebrew/homebrew-php 
+      echo "Installing PHP ..."
+      brew install "${PACKAGE}"
+      brew install "${PACKAGE}"-xdebug
+      brew link "${PACKAGE}"
+      echo "Installing composer ..."
+      curl -s http://getcomposer.org/installer | php
+      mv composer.phar /usr/local/bin/composer
+    fi
+  - composer install --no-interaction
+
+script:
+  - vendor/bin/phpunit --coverage-text
+  - time php examples/91-benchmark-throughput.php
diff --git a/assets/php/vendor/react/stream/CHANGELOG.md b/assets/php/vendor/react/stream/CHANGELOG.md
new file mode 100644
index 0000000..f64815d
--- /dev/null
+++ b/assets/php/vendor/react/stream/CHANGELOG.md
@@ -0,0 +1,377 @@
+# Changelog
+
+## 0.7.7 (2018-01-19)
+
+*   Improve test suite by fixing forward compatibility with upcoming EventLoop
+    releases, avoid risky tests and add test group to skip integration tests
+    relying on internet connection and apply appropriate test timeouts.
+    (#128, #131 and #132 by @clue)
+
+## 0.7.6 (2017-12-21)
+
+*   Fix: Work around reading from unbuffered pipe stream in legacy PHP < 5.4.28 and PHP < 5.5.12
+    (#126 by @clue)
+
+*   Improve test suite by simplifying test bootstrapping logic via Composer and
+    test against PHP 7.2
+    (#127 by @clue and #124 by @carusogabriel)
+
+## 0.7.5 (2017-11-20)
+
+*   Fix: Igore excessive `fopen()` mode flags for `WritableResourceStream`
+    (#119 by @clue)
+
+*   Fix: Fix forward compatibility with upcoming EventLoop releases
+    (#121 by @clue)
+
+*   Restructure examples to ease getting started
+    (#123 by @clue)
+
+*   Improve test suite by adding forward compatibility with PHPUnit 6 and
+    ignore Mac OS X test failures for now until Travis tests work again
+    (#122 by @gabriel-caruso and #120 by @clue)
+
+## 0.7.4 (2017-10-11)
+
+*   Fix: Remove event listeners from `CompositeStream` once closed and
+    remove undocumented left-over `close` event argument
+    (#116 by @clue)
+
+*   Minor documentation improvements: Fix wrong class name in example,
+    fix typos in README and
+    fix forward compatibility with upcoming EventLoop releases in example
+    (#113 by @docteurklein and #114 and #115 by @clue)
+
+*   Improve test suite by running against Mac OS X on Travis
+    (#112 by @clue)
+
+## 0.7.3 (2017-08-05)
+
+*   Improvement: Support Événement 3.0 a long side 2.0 and 1.0
+    (#108 by @WyriHaximus)
+
+*   Readme: Corrected loop initialization in usage example
+    (#109 by @pulyavin)
+
+*   Travis: Lock linux distribution preventing future builds from breaking
+    (#110 by @clue)
+
+## 0.7.2 (2017-06-15)
+
+*   Bug fix: WritableResourceStream: Close the underlying stream when closing the stream.
+    (#107 by @WyriHaximus)  
+
+## 0.7.1 (2017-05-20)
+
+*   Feature: Add optional `$writeChunkSize` parameter to limit maximum number of
+    bytes to write at once.
+    (#105 by @clue)
+
+    ```php
+    $stream = new WritableResourceStream(STDOUT, $loop, null, 8192);
+    ```
+
+*   Ignore HHVM test failures for now until Travis tests work again
+    (#106 by @clue)
+
+## 0.7.0 (2017-05-04)
+
+*   Removed / BC break: Remove deprecated and unneeded functionality
+    (#45, #87, #90, #91 and #93 by @clue)
+
+    *   Remove deprecated `Stream` class, use `DuplexResourceStream` instead
+        (#87 by @clue)
+      
+    *   Remove public `$buffer` property, use new constructor parameters instead
+        (#91 by @clue)
+
+    *   Remove public `$stream` property from all resource streams
+        (#90 by @clue)
+
+    *   Remove undocumented and now unused `ReadableStream` and `WritableStream`
+        (#93 by @clue)
+
+    *   Remove `BufferedSink`
+        (#45 by @clue)
+
+*   Feature / BC break: Simplify `ThroughStream` by using data callback instead of
+    inheritance. It is now a direct implementation of `DuplexStreamInterface`.
+    (#88 and #89 by @clue)
+
+    ```php
+    $through = new ThroughStream(function ($data) {
+        return json_encode($data) . PHP_EOL;
+    });
+    $through->on('data', $this->expectCallableOnceWith("[2, true]\n"));
+
+    $through->write(array(2, true));
+    ```
+
+*   Feature / BC break: The `CompositeStream` starts closed if either side is
+    already closed and forwards pause to pipe source on first write attempt.
+    (#96 and #103 by @clue)
+    
+    If either side of the composite stream closes, it will also close the other
+    side. We now also ensure that if either side is already closed during
+    instantiation, it will also close the other side.
+
+*   BC break: Mark all classes as `final` and
+    mark internal API as `private` to discourage inheritance
+    (#95 and #99 by @clue)
+
+*   Feature / BC break: Only emit `error` event for fatal errors
+    (#92 by @clue)
+
+    >   The `error` event was previously also allowed to be emitted for non-fatal
+        errors, but our implementations actually only ever emitted this as a fatal
+        error and then closed the stream.
+
+*   Feature: Explicitly allow custom events and exclude any semantics
+    (#97 by @clue)
+
+*   Support legacy PHP 5.3 through PHP 7.1 and HHVM and improve usage documentation
+    (#100 and #102 by @clue)
+
+*   Actually require all dependencies so this is self-contained and improve
+    forward compatibility with EventLoop v1.0 and v0.5
+    (#94 and #98 by @clue)
+
+## 0.6.0 (2017-03-26)
+
+* Feature / Fix / BC break: Add `DuplexResourceStream` and deprecate `Stream`
+  (#85 by @clue)
+
+  ```php
+  // old (does still work for BC reasons)
+  $stream = new Stream($connection, $loop);
+
+  // new
+  $stream = new DuplexResourceStream($connection, $loop);
+  ```
+
+  Note that the `DuplexResourceStream` now rejects read-only or write-only
+  streams, so this may affect BC. If you want a read-only or write-only
+  resource, use `ReadableResourceStream` or `WritableResourceStream` instead of
+  `DuplexResourceStream`.
+
+  > BC note: This class was previously called `Stream`. The `Stream` class still
+    exists for BC reasons and will be removed in future versions of this package.
+
+* Feature / BC break: Add `WritableResourceStream` (previously called `Buffer`)
+  (#84 by @clue)
+
+  ```php
+  // old
+  $stream = new Buffer(STDOUT, $loop);
+
+  // new
+  $stream = new WritableResourceStream(STDOUT, $loop);
+  ```
+
+* Feature: Add `ReadableResourceStream`
+  (#83 by @clue)
+
+  ```php
+  $stream = new ReadableResourceStream(STDIN, $loop);
+  ```
+
+* Fix / BC Break: Enforce using non-blocking I/O
+  (#46 by @clue)
+
+  > BC note: This is known to affect process pipes on Windows which do not
+    support non-blocking I/O and could thus block the whole EventLoop previously.
+
+* Feature / Fix / BC break: Consistent semantics for
+  `DuplexStreamInterface::end()` to ensure it SHOULD also end readable side
+  (#86 by @clue)
+
+* Fix: Do not use unbuffered reads on pipe streams for legacy PHP < 5.4
+  (#80 by @clue)
+
+## 0.5.0 (2017-03-08)
+
+* Feature / BC break: Consistent `end` event semantics (EOF)
+  (#70 by @clue)
+  
+  The `end` event will now only be emitted for a *successful* end, not if the
+  stream closes due to an unrecoverable `error` event or if you call `close()`
+  explicitly.
+  If you want to detect when the stream closes (terminates), use the `close`
+  event instead.
+
+* BC break: Remove custom (undocumented) `full-drain` event from `Buffer`
+  (#63 and #68 by @clue)
+
+  > The `full-drain` event was undocumented and mostly used internally.
+    Relying on this event has attracted some low-quality code in the past, so
+    we've removed this from the public API in order to work out a better
+    solution instead.
+    If you want to detect when the buffer finishes flushing data to the stream,
+    you may want to look into its `end()` method or the `close` event instead.
+
+* Feature / BC break: Consistent event semantics and documentation,
+  explicitly state *when* events will be emitted and *which* arguments they
+  receive.
+  (#73 and #69 by @clue)
+
+  The documentation now explicitly defines each event and its arguments.
+  Custom events and event arguments are still supported.
+  Most notably, all defined events only receive inherently required event
+  arguments and no longer transmit the instance they are emitted on for
+  consistency and performance reasons.
+
+  ```php
+  // old (inconsistent and not supported by all implementations)
+  $stream->on('data', function ($data, $stream) {
+      // process $data
+  });
+
+  // new (consistent throughout the whole ecosystem)
+  $stream->on('data', function ($data) use ($stream) {
+      // process $data
+  });
+  ```
+
+  > This mostly adds documentation (and thus some stricter, consistent 
+    definitions) for the existing behavior, it does NOT define any major
+    changes otherwise.
+    Most existing code should be compatible with these changes, unless
+    it relied on some undocumented/unintended semantics.
+
+* Feature / BC break: Consistent method semantics and documentation
+  (#72 by @clue)
+
+  > This mostly adds documentation (and thus some stricter, consistent
+    definitions) for the existing behavior, it does NOT define any major
+    changes otherwise.
+    Most existing code should be compatible with these changes, unless
+    it relied on some undocumented/unintended semantics.
+
+* Feature: Consistent `pipe()` semantics for closed and closing streams
+  (#71 from @clue)
+
+  The source stream will now always be paused via `pause()` when the
+  destination stream closes. Also, properly stop piping if the source
+  stream closes and remove all event forwarding.
+
+* Improve test suite by adding PHPUnit to `require-dev` and improving coverage.
+  (#74 and #75 by @clue, #66 by @nawarian)
+
+## 0.4.6 (2017-01-25)
+
+* Feature: The `Buffer` can now be injected into the `Stream` (or be used standalone)
+  (#62 by @clue)
+
+* Fix: Forward `close` event only once for `CompositeStream` and `ThroughStream`
+  (#60 by @clue)
+
+* Fix: Consistent `close` event behavior for `Buffer`
+  (#61 by @clue)
+
+## 0.4.5 (2016-11-13)
+
+* Feature: Support setting read buffer size to `null` (infinite)
+  (#42 by @clue)
+
+* Fix: Do not emit `full-drain` event if `Buffer` is closed during `drain` event
+  (#55 by @clue)
+
+* Vastly improved performance by factor of 10x to 20x.
+  Raise default buffer sizes to 64 KiB and simplify and improve error handling
+  and unneeded function calls.
+  (#53, #55, #56 by @clue)
+
+## 0.4.4 (2016-08-22)
+
+* Bug fix: Emit `error` event and close `Stream` when accessing the underlying
+  stream resource fails with a permanent error.
+  (#52 and #40 by @clue, #25 by @lysenkobv)
+
+* Bug fix: Do not emit empty `data` event if nothing has been read (stream reached EOF)
+  (#39 by @clue)
+
+* Bug fix: Ignore empty writes to `Buffer`
+  (#51 by @clue)
+
+* Add benchmarking script to measure throughput in CI
+  (#41 by @clue)
+
+## 0.4.3 (2015-10-07)
+
+* Bug fix: Read buffer to 0 fixes error with libevent and large quantity of I/O (@mbonneau)
+* Bug fix: No double-write during drain call (@arnaud-lb)
+* Bug fix: Support HHVM (@clue)
+* Adjust compatibility to 5.3 (@clue)
+
+## 0.4.2 (2014-09-09)
+
+* Added DuplexStreamInterface
+* Stream sets stream resources to non-blocking
+* Fixed potential race condition in pipe
+
+## 0.4.1 (2014-04-13)
+
+* Bug fix: v0.3.4 changes merged for v0.4.1
+
+## 0.3.4 (2014-03-30)
+
+* Bug fix: [Stream] Fixed 100% CPU spike from non-empty write buffer on closed stream
+
+## 0.4.0 (2014-02-02)
+
+* BC break: Bump minimum PHP version to PHP 5.4, remove 5.3 specific hacks
+* BC break: Update to Evenement 2.0
+* Dependency: Autoloading and filesystem structure now PSR-4 instead of PSR-0
+
+## 0.3.3 (2013-07-08)
+
+* Bug fix: [Stream] Correctly detect closed connections
+
+## 0.3.2 (2013-05-10)
+
+* Bug fix: [Stream] Make sure CompositeStream is closed properly
+
+## 0.3.1 (2013-04-21)
+
+* Bug fix: [Stream] Allow any `ReadableStreamInterface` on `BufferedSink::createPromise()`
+
+## 0.3.0 (2013-04-14)
+
+* Feature: [Stream] Factory method for BufferedSink
+
+## 0.2.6 (2012-12-26)
+
+* Version bump
+
+## 0.2.5 (2012-11-26)
+
+* Feature: Make BufferedSink trigger progress events on the promise (@jsor)
+
+## 0.2.4 (2012-11-18)
+
+* Feature: Added ThroughStream, CompositeStream, ReadableStream and WritableStream
+* Feature: Added BufferedSink
+
+## 0.2.3 (2012-11-14)
+
+* Version bump
+
+## 0.2.2 (2012-10-28)
+
+* Version bump
+
+## 0.2.1 (2012-10-14)
+
+* Bug fix: Check for EOF in `Buffer::write()`
+
+## 0.2.0 (2012-09-10)
+
+* Version bump
+
+## 0.1.1 (2012-07-12)
+
+* Bug fix: Testing and functional against PHP >= 5.3.3 and <= 5.3.8
+
+## 0.1.0 (2012-07-11)
+
+* First tagged release
diff --git a/assets/php/vendor/react/stream/LICENSE b/assets/php/vendor/react/stream/LICENSE
new file mode 100644
index 0000000..a808108
--- /dev/null
+++ b/assets/php/vendor/react/stream/LICENSE
@@ -0,0 +1,19 @@
+Copyright (c) 2012 Igor Wiedler, Chris Boden
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/assets/php/vendor/react/stream/README.md b/assets/php/vendor/react/stream/README.md
new file mode 100644
index 0000000..c362534
--- /dev/null
+++ b/assets/php/vendor/react/stream/README.md
@@ -0,0 +1,1224 @@
+# Stream
+
+[![Build Status](https://travis-ci.org/reactphp/stream.svg?branch=master)](https://travis-ci.org/reactphp/stream)
+
+Event-driven readable and writable streams for non-blocking I/O in [ReactPHP](https://reactphp.org/).
+
+In order to make the [EventLoop](https://github.com/reactphp/event-loop)
+easier to use, this component introduces the powerful concept of "streams".
+Streams allow you to efficiently process huge amounts of data (such as a multi
+Gigabyte file download) in small chunks without having to store everything in
+memory at once.
+They are very similar to the streams found in PHP itself,
+but have an interface more suited for async, non-blocking I/O.
+
+**Table of contents**
+
+* [Stream usage](#stream-usage)
+  * [ReadableStreamInterface](#readablestreaminterface)
+    * [data event](#data-event)
+    * [end event](#end-event)
+    * [error event](#error-event)
+    * [close event](#close-event)
+    * [isReadable()](#isreadable)
+    * [pause()](#pause)
+    * [resume()](#resume)
+    * [pipe()](#pipe)
+    * [close()](#close)
+  * [WritableStreamInterface](#writablestreaminterface)
+    * [drain event](#drain-event)
+    * [pipe event](#pipe-event)
+    * [error event](#error-event-1)
+    * [close event](#close-event-1)
+    * [isWritable()](#iswritable)
+    * [write()](#write)
+    * [end()](#end)
+    * [close()](#close-1)
+  * [DuplexStreamInterface](#duplexstreaminterface)
+* [Creating streams](#creating-streams)
+  * [ReadableResourceStream](#readableresourcestream)
+  * [WritableResourceStream](#writableresourcestream)
+  * [DuplexResourceStream](#duplexresourcestream)
+  * [ThroughStream](#throughstream)
+  * [CompositeStream](#compositestream)
+* [Usage](#usage)
+* [Install](#install)
+* [Tests](#tests)
+* [License](#license)
+* [More](#more)
+
+## Stream usage
+
+ReactPHP uses the concept of "streams" throughout its ecosystem to provide a
+consistent higher-level abstraction for processing streams of arbitrary data
+contents and size.
+While a stream itself is a quite low-level concept, it can be used as a powerful
+abstraction to build higher-level components and protocols on top.
+
+If you're new to this concept, it helps to think of them as a water pipe:
+You can consume water from a source or you can produce water and forward (pipe)
+it to any destination (sink).
+
+Similarly, streams can either be
+
+* readable (such as `STDIN` terminal input) or
+* writable (such as `STDOUT` terminal output) or
+* duplex (both readable *and* writable, such as a TCP/IP connection)
+
+Accordingly, this package defines the following three interfaces
+
+* [`ReadableStreamInterface`](#readablestreaminterface)
+* [`WritableStreamInterface`](#writablestreaminterface)
+* [`DuplexStreamInterface`](#duplexstreaminterface)
+
+### ReadableStreamInterface
+
+The `ReadableStreamInterface` is responsible for providing an interface for
+read-only streams and the readable side of duplex streams.
+
+Besides defining a few methods, this interface also implements the
+`EventEmitterInterface` which allows you to react to certain events.
+
+The event callback functions MUST be a valid `callable` that obeys strict
+parameter definitions and MUST accept event parameters exactly as documented.
+The event callback functions MUST NOT throw an `Exception`.
+The return value of the event callback functions will be ignored and has no
+effect, so for performance reasons you're recommended to not return any
+excessive data structures.
+
+Every implementation of this interface MUST follow these event semantics in
+order to be considered a well-behaving stream.
+
+> Note that higher-level implementations of this interface may choose to
+  define additional events with dedicated semantics not defined as part of
+  this low-level stream specification. Conformance with these event semantics
+  is out of scope for this interface, so you may also have to refer to the
+  documentation of such a higher-level implementation.
+
+#### data event
+
+The `data` event will be emitted whenever some data was read/received
+from this source stream.
+The event receives a single mixed argument for incoming data.
+
+```php
+$stream->on('data', function ($data) {
+    echo $data;
+});
+```
+
+This event MAY be emitted any number of times, which may be zero times if
+this stream does not send any data at all.
+It SHOULD not be emitted after an `end` or `close` event.
+
+The given `$data` argument may be of mixed type, but it's usually
+recommended it SHOULD be a `string` value or MAY use a type that allows
+representation as a `string` for maximum compatibility.
+
+Many common streams (such as a TCP/IP connection or a file-based stream)
+will emit the raw (binary) payload data that is received over the wire as
+chunks of `string` values.
+
+Due to the stream-based nature of this, the sender may send any number
+of chunks with varying sizes. There are no guarantees that these chunks
+will be received with the exact same framing the sender intended to send.
+In other words, many lower-level protocols (such as TCP/IP) transfer the
+data in chunks that may be anywhere between single-byte values to several
+dozens of kilobytes. You may want to apply a higher-level protocol to
+these low-level data chunks in order to achieve proper message framing.
+  
+#### end event
+
+The `end` event will be emitted once the source stream has successfully
+reached the end of the stream (EOF).
+
+```php
+$stream->on('end', function () {
+    echo 'END';
+});
+```
+
+This event SHOULD be emitted once or never at all, depending on whether
+a successful end was detected.
+It SHOULD NOT be emitted after a previous `end` or `close` event.
+It MUST NOT be emitted if the stream closes due to a non-successful
+end, such as after a previous `error` event.
+
+After the stream is ended, it MUST switch to non-readable mode,
+see also `isReadable()`.
+
+This event will only be emitted if the *end* was reached successfully,
+not if the stream was interrupted by an unrecoverable error or explicitly
+closed. Not all streams know this concept of a "successful end".
+Many use-cases involve detecting when the stream closes (terminates)
+instead, in this case you should use the `close` event.
+After the stream emits an `end` event, it SHOULD usually be followed by a
+`close` event.
+
+Many common streams (such as a TCP/IP connection or a file-based stream)
+will emit this event if either the remote side closes the connection or
+a file handle was successfully read until reaching its end (EOF).
+
+Note that this event should not be confused with the `end()` method.
+This event defines a successful end *reading* from a source stream, while
+the `end()` method defines *writing* a successful end to a destination
+stream.
+
+#### error event
+
+The `error` event will be emitted once a fatal error occurs, usually while
+trying to read from this stream.
+The event receives a single `Exception` argument for the error instance.
+
+```php
+$server->on('error', function (Exception $e) {
+    echo 'Error: ' . $e->getMessage() . PHP_EOL;
+});
+```
+
+This event SHOULD be emitted once the stream detects a fatal error, such
+as a fatal transmission error or after an unexpected `data` or premature
+`end` event.
+It SHOULD NOT be emitted after a previous `error`, `end` or `close` event.
+It MUST NOT be emitted if this is not a fatal error condition, such as
+a temporary network issue that did not cause any data to be lost.
+
+After the stream errors, it MUST close the stream and SHOULD thus be
+followed by a `close` event and then switch to non-readable mode, see
+also `close()` and `isReadable()`.
+
+Many common streams (such as a TCP/IP connection or a file-based stream)
+only deal with data transmission and do not make assumption about data
+boundaries (such as unexpected `data` or premature `end` events).
+In other words, many lower-level protocols (such as TCP/IP) may choose
+to only emit this for a fatal transmission error once and will then
+close (terminate) the stream in response.
+
+If this stream is a `DuplexStreamInterface`, you should also notice
+how the writable side of the stream also implements an `error` event.
+In other words, an error may occur while either reading or writing the
+stream which should result in the same error processing.
+
+#### close event
+
+The `close` event will be emitted once the stream closes (terminates).
+
+```php
+$stream->on('close', function () {
+    echo 'CLOSED';
+});
+```
+
+This event SHOULD be emitted once or never at all, depending on whether
+the stream ever terminates.
+It SHOULD NOT be emitted after a previous `close` event.
+
+After the stream is closed, it MUST switch to non-readable mode,
+see also `isReadable()`.
+
+Unlike the `end` event, this event SHOULD be emitted whenever the stream
+closes, irrespective of whether this happens implicitly due to an
+unrecoverable error or explicitly when either side closes the stream.
+If you only want to detect a *successful* end, you should use the `end`
+event instead.
+
+Many common streams (such as a TCP/IP connection or a file-based stream)
+will likely choose to emit this event after reading a *successful* `end`
+event or after a fatal transmission `error` event.
+
+If this stream is a `DuplexStreamInterface`, you should also notice
+how the writable side of the stream also implements a `close` event.
+In other words, after receiving this event, the stream MUST switch into
+non-writable AND non-readable mode, see also `isWritable()`.
+Note that this event should not be confused with the `end` event.
+
+#### isReadable()
+
+The `isReadable(): bool` method can be used to
+check whether this stream is in a readable state (not closed already).
+
+This method can be used to check if the stream still accepts incoming
+data events or if it is ended or closed already.
+Once the stream is non-readable, no further `data` or `end` events SHOULD
+be emitted.
+
+```php
+assert($stream->isReadable() === false);
+
+$stream->on('data', assertNeverCalled());
+$stream->on('end', assertNeverCalled());
+```
+
+A successfully opened stream always MUST start in readable mode.
+
+Once the stream ends or closes, it MUST switch to non-readable mode.
+This can happen any time, explicitly through `close()` or
+implicitly due to a remote close or an unrecoverable transmission error.
+Once a stream has switched to non-readable mode, it MUST NOT transition
+back to readable mode.
+
+If this stream is a `DuplexStreamInterface`, you should also notice
+how the writable side of the stream also implements an `isWritable()`
+method. Unless this is a half-open duplex stream, they SHOULD usually
+have the same return value.
+
+#### pause()
+
+The `pause(): void` method can be used to
+pause reading incoming data events.
+
+Removes the data source file descriptor from the event loop. This
+allows you to throttle incoming data.
+
+Unless otherwise noted, a successfully opened stream SHOULD NOT start
+in paused state.
+
+Once the stream is paused, no futher `data` or `end` events SHOULD
+be emitted.
+
+```php
+$stream->pause();
+
+$stream->on('data', assertShouldNeverCalled());
+$stream->on('end', assertShouldNeverCalled());
+```
+
+This method is advisory-only, though generally not recommended, the
+stream MAY continue emitting `data` events.
+
+You can continue processing events by calling `resume()` again.
+
+Note that both methods can be called any number of times, in particular
+calling `pause()` more than once SHOULD NOT have any effect.
+
+See also `resume()`.
+
+#### resume()
+
+The `resume(): void` method can be used to
+resume reading incoming data events.
+
+Re-attach the data source after a previous `pause()`.
+
+```php
+$stream->pause();
+
+$loop->addTimer(1.0, function () use ($stream) {
+    $stream->resume();
+});
+```
+
+Note that both methods can be called any number of times, in particular
+calling `resume()` without a prior `pause()` SHOULD NOT have any effect.
+ 
+See also `pause()`.
+
+#### pipe()
+
+The `pipe(WritableStreamInterface $dest, array $options = [])` method can be used to
+pipe all the data from this readable source into the given writable destination.
+
+Automatically sends all incoming data to the destination.
+Automatically throttles the source based on what the destination can handle.
+
+```php
+$source->pipe($dest);
+```
+
+Similarly, you can also pipe an instance implementing `DuplexStreamInterface`
+into itself in order to write back all the data that is received.
+This may be a useful feature for a TCP/IP echo service:
+
+```php
+$connection->pipe($connection);
+```
+
+This method returns the destination stream as-is, which can be used to
+set up chains of piped streams:
+
+```php
+$source->pipe($decodeGzip)->pipe($filterBadWords)->pipe($dest);
+```
+
+By default, this will call `end()` on the destination stream once the
+source stream emits an `end` event. This can be disabled like this:
+
+```php
+$source->pipe($dest, array('end' => false));
+```
+
+Note that this only applies to the `end` event.
+If an `error` or explicit `close` event happens on the source stream,
+you'll have to manually close the destination stream:
+
+```php
+$source->pipe($dest);
+$source->on('close', function () use ($dest) {
+    $dest->end('BYE!');
+});
+```
+
+If the source stream is not readable (closed state), then this is a NO-OP.
+
+```php
+$source->close();
+$source->pipe($dest); // NO-OP
+```
+
+If the destinantion stream is not writable (closed state), then this will simply
+throttle (pause) the source stream:
+
+```php
+$dest->close();
+$source->pipe($dest); // calls $source->pause()
+```
+
+Similarly, if the destination stream is closed while the pipe is still
+active, it will also throttle (pause) the source stream:
+
+```php
+$source->pipe($dest);
+$dest->close(); // calls $source->pause()
+```
+
+Once the pipe is set up successfully, the destination stream MUST emit
+a `pipe` event with this source stream an event argument.
+
+#### close()
+
+The `close(): void` method can be used to
+close the stream (forcefully).
+
+This method can be used to (forcefully) close the stream.
+
+```php
+$stream->close();
+```
+
+Once the stream is closed, it SHOULD emit a `close` event.
+Note that this event SHOULD NOT be emitted more than once, in particular
+if this method is called multiple times.
+
+After calling this method, the stream MUST switch into a non-readable
+mode, see also `isReadable()`.
+This means that no further `data` or `end` events SHOULD be emitted.
+
+```php
+$stream->close();
+assert($stream->isReadable() === false);
+
+$stream->on('data', assertNeverCalled());
+$stream->on('end', assertNeverCalled());
+```
+
+If this stream is a `DuplexStreamInterface`, you should also notice
+how the writable side of the stream also implements a `close()` method.
+In other words, after calling this method, the stream MUST switch into
+non-writable AND non-readable mode, see also `isWritable()`.
+Note that this method should not be confused with the `end()` method.
+
+### WritableStreamInterface
+
+The `WritableStreamInterface` is responsible for providing an interface for
+write-only streams and the writable side of duplex streams.
+
+Besides defining a few methods, this interface also implements the
+`EventEmitterInterface` which allows you to react to certain events.
+
+The event callback functions MUST be a valid `callable` that obeys strict
+parameter definitions and MUST accept event parameters exactly as documented.
+The event callback functions MUST NOT throw an `Exception`.
+The return value of the event callback functions will be ignored and has no
+effect, so for performance reasons you're recommended to not return any
+excessive data structures.
+
+Every implementation of this interface MUST follow these event semantics in
+order to be considered a well-behaving stream.
+
+> Note that higher-level implementations of this interface may choose to
+  define additional events with dedicated semantics not defined as part of
+  this low-level stream specification. Conformance with these event semantics
+  is out of scope for this interface, so you may also have to refer to the
+  documentation of such a higher-level implementation.
+
+#### drain event
+
+The `drain` event will be emitted whenever the write buffer became full
+previously and is now ready to accept more data.
+
+```php
+$stream->on('drain', function () use ($stream) {
+    echo 'Stream is now ready to accept more data';
+});
+```
+
+This event SHOULD be emitted once every time the buffer became full
+previously and is now ready to accept more data.
+In other words, this event MAY be emitted any number of times, which may
+be zero times if the buffer never became full in the first place.
+This event SHOULD NOT be emitted if the buffer has not become full
+previously.
+
+This event is mostly used internally, see also `write()` for more details.
+
+#### pipe event
+
+The `pipe` event will be emitted whenever a readable stream is `pipe()`d
+into this stream.
+The event receives a single `ReadableStreamInterface` argument for the
+source stream.
+
+```php
+$stream->on('pipe', function (ReadableStreamInterface $source) use ($stream) {
+    echo 'Now receiving piped data';
+
+    // explicitly close target if source emits an error
+    $source->on('error', function () use ($stream) {
+        $stream->close();
+    });
+});
+
+$source->pipe($stream);
+```
+
+This event MUST be emitted once for each readable stream that is
+successfully piped into this destination stream.
+In other words, this event MAY be emitted any number of times, which may
+be zero times if no stream is ever piped into this stream.
+This event MUST NOT be emitted if either the source is not readable
+(closed already) or this destination is not writable (closed already).
+
+This event is mostly used internally, see also `pipe()` for more details.
+
+#### error event
+
+The `error` event will be emitted once a fatal error occurs, usually while
+trying to write to this stream.
+The event receives a single `Exception` argument for the error instance.
+
+```php
+$stream->on('error', function (Exception $e) {
+    echo 'Error: ' . $e->getMessage() . PHP_EOL;
+});
+```
+
+This event SHOULD be emitted once the stream detects a fatal error, such
+as a fatal transmission error.
+It SHOULD NOT be emitted after a previous `error` or `close` event.
+It MUST NOT be emitted if this is not a fatal error condition, such as
+a temporary network issue that did not cause any data to be lost.
+
+After the stream errors, it MUST close the stream and SHOULD thus be
+followed by a `close` event and then switch to non-writable mode, see
+also `close()` and `isWritable()`.
+
+Many common streams (such as a TCP/IP connection or a file-based stream)
+only deal with data transmission and may choose
+to only emit this for a fatal transmission error once and will then
+close (terminate) the stream in response.
+
+If this stream is a `DuplexStreamInterface`, you should also notice
+how the readable side of the stream also implements an `error` event.
+In other words, an error may occur while either reading or writing the
+stream which should result in the same error processing.
+
+#### close event
+
+The `close` event will be emitted once the stream closes (terminates).
+
+```php
+$stream->on('close', function () {
+    echo 'CLOSED';
+});
+```
+
+This event SHOULD be emitted once or never at all, depending on whether
+the stream ever terminates.
+It SHOULD NOT be emitted after a previous `close` event.
+
+After the stream is closed, it MUST switch to non-writable mode,
+see also `isWritable()`.
+
+This event SHOULD be emitted whenever the stream closes, irrespective of
+whether this happens implicitly due to an unrecoverable error or
+explicitly when either side closes the stream.
+
+Many common streams (such as a TCP/IP connection or a file-based stream)
+will likely choose to emit this event after flushing the buffer from
+the `end()` method, after receiving a *successful* `end` event or after
+a fatal transmission `error` event.
+
+If this stream is a `DuplexStreamInterface`, you should also notice
+how the readable side of the stream also implements a `close` event.
+In other words, after receiving this event, the stream MUST switch into
+non-writable AND non-readable mode, see also `isReadable()`.
+Note that this event should not be confused with the `end` event.
+
+#### isWritable()
+
+The `isWritable(): bool` method can be used to
+check whether this stream is in a writable state (not closed already).
+
+This method can be used to check if the stream still accepts writing
+any data or if it is ended or closed already.
+Writing any data to a non-writable stream is a NO-OP:
+
+```php
+assert($stream->isWritable() === false);
+
+$stream->write('end'); // NO-OP
+$stream->end('end'); // NO-OP
+```
+
+A successfully opened stream always MUST start in writable mode.
+
+Once the stream ends or closes, it MUST switch to non-writable mode.
+This can happen any time, explicitly through `end()` or `close()` or
+implicitly due to a remote close or an unrecoverable transmission error.
+Once a stream has switched to non-writable mode, it MUST NOT transition
+back to writable mode.
+
+If this stream is a `DuplexStreamInterface`, you should also notice
+how the readable side of the stream also implements an `isReadable()`
+method. Unless this is a half-open duplex stream, they SHOULD usually
+have the same return value.
+
+#### write()
+
+The `write(mixed $data): bool` method can be used to
+write some data into the stream.
+
+A successful write MUST be confirmed with a boolean `true`, which means
+that either the data was written (flushed) immediately or is buffered and
+scheduled for a future write. Note that this interface gives you no
+control over explicitly flushing the buffered data, as finding the
+appropriate time for this is beyond the scope of this interface and left
+up to the implementation of this interface.
+
+Many common streams (such as a TCP/IP connection or file-based stream)
+may choose to buffer all given data and schedule a future flush by using
+an underlying EventLoop to check when the resource is actually writable.
+
+If a stream cannot handle writing (or flushing) the data, it SHOULD emit
+an `error` event and MAY `close()` the stream if it can not recover from
+this error.
+
+If the internal buffer is full after adding `$data`, then `write()`
+SHOULD return `false`, indicating that the caller should stop sending
+data until the buffer drains.
+The stream SHOULD send a `drain` event once the buffer is ready to accept
+more data.
+
+Similarly, if the the stream is not writable (already in a closed state)
+it MUST NOT process the given `$data` and SHOULD return `false`,
+indicating that the caller should stop sending data.
+
+The given `$data` argument MAY be of mixed type, but it's usually
+recommended it SHOULD be a `string` value or MAY use a type that allows
+representation as a `string` for maximum compatibility.
+
+Many common streams (such as a TCP/IP connection or a file-based stream)
+will only accept the raw (binary) payload data that is transferred over
+the wire as chunks of `string` values.
+
+Due to the stream-based nature of this, the sender may send any number
+of chunks with varying sizes. There are no guarantees that these chunks
+will be received with the exact same framing the sender intended to send.
+In other words, many lower-level protocols (such as TCP/IP) transfer the
+data in chunks that may be anywhere between single-byte values to several
+dozens of kilobytes. You may want to apply a higher-level protocol to
+these low-level data chunks in order to achieve proper message framing.
+
+#### end()
+
+The `end(mixed $data = null): void` method can be used to
+successfully end the stream (after optionally sending some final data).
+
+This method can be used to successfully end the stream, i.e. close
+the stream after sending out all data that is currently buffered.
+
+```php
+$stream->write('hello');
+$stream->write('world');
+$stream->end();
+```
+
+If there's no data currently buffered and nothing to be flushed, then
+this method MAY `close()` the stream immediately.
+
+If there's still data in the buffer that needs to be flushed first, then
+this method SHOULD try to write out this data and only then `close()`
+the stream.
+Once the stream is closed, it SHOULD emit a `close` event.
+
+Note that this interface gives you no control over explicitly flushing
+the buffered data, as finding the appropriate time for this is beyond the
+scope of this interface and left up to the implementation of this
+interface.
+
+Many common streams (such as a TCP/IP connection or file-based stream)
+may choose to buffer all given data and schedule a future flush by using
+an underlying EventLoop to check when the resource is actually writable.
+
+You can optionally pass some final data that is written to the stream
+before ending the stream. If a non-`null` value is given as `$data`, then
+this method will behave just like calling `write($data)` before ending
+with no data.
+
+```php
+// shorter version
+$stream->end('bye');
+
+// same as longer version
+$stream->write('bye');
+$stream->end();
+```
+
+After calling this method, the stream MUST switch into a non-writable
+mode, see also `isWritable()`.
+This means that no further writes are possible, so any additional
+`write()` or `end()` calls have no effect.
+
+```php
+$stream->end();
+assert($stream->isWritable() === false);
+
+$stream->write('nope'); // NO-OP
+$stream->end(); // NO-OP
+```
+
+If this stream is a `DuplexStreamInterface`, calling this method SHOULD
+also end its readable side, unless the stream supports half-open mode.
+In other words, after calling this method, these streams SHOULD switch
+into non-writable AND non-readable mode, see also `isReadable()`.
+This implies that in this case, the stream SHOULD NOT emit any `data`
+or `end` events anymore.
+Streams MAY choose to use the `pause()` method logic for this, but
+special care may have to be taken to ensure a following call to the
+`resume()` method SHOULD NOT continue emitting readable events.
+
+Note that this method should not be confused with the `close()` method.
+
+#### close()
+
+The `close(): void` method can be used to
+close the stream (forcefully).
+
+This method can be used to forcefully close the stream, i.e. close
+the stream without waiting for any buffered data to be flushed.
+If there's still data in the buffer, this data SHOULD be discarded.
+
+```php
+$stream->close();
+```
+
+Once the stream is closed, it SHOULD emit a `close` event.
+Note that this event SHOULD NOT be emitted more than once, in particular
+if this method is called multiple times.
+
+After calling this method, the stream MUST switch into a non-writable
+mode, see also `isWritable()`.
+This means that no further writes are possible, so any additional
+`write()` or `end()` calls have no effect.
+
+```php
+$stream->close();
+assert($stream->isWritable() === false);
+
+$stream->write('nope'); // NO-OP
+$stream->end(); // NO-OP
+```
+
+Note that this method should not be confused with the `end()` method.
+Unlike the `end()` method, this method does not take care of any existing
+buffers and simply discards any buffer contents.
+Likewise, this method may also be called after calling `end()` on a
+stream in order to stop waiting for the stream to flush its final data.
+
+```php
+$stream->end();
+$loop->addTimer(1.0, function () use ($stream) {
+    $stream->close();
+});
+```
+
+If this stream is a `DuplexStreamInterface`, you should also notice
+how the readable side of the stream also implements a `close()` method.
+In other words, after calling this method, the stream MUST switch into
+non-writable AND non-readable mode, see also `isReadable()`.
+
+### DuplexStreamInterface
+
+The `DuplexStreamInterface` is responsible for providing an interface for
+duplex streams (both readable and writable).
+
+It builds on top of the existing interfaces for readable and writable streams
+and follows the exact same method and event semantics.
+If you're new to this concept, you should look into the
+`ReadableStreamInterface` and `WritableStreamInterface` first.
+
+Besides defining a few methods, this interface also implements the
+`EventEmitterInterface` which allows you to react to the same events defined
+on the `ReadbleStreamInterface` and `WritableStreamInterface`.
+
+The event callback functions MUST be a valid `callable` that obeys strict
+parameter definitions and MUST accept event parameters exactly as documented.
+The event callback functions MUST NOT throw an `Exception`.
+The return value of the event callback functions will be ignored and has no
+effect, so for performance reasons you're recommended to not return any
+excessive data structures.
+
+Every implementation of this interface MUST follow these event semantics in
+order to be considered a well-behaving stream.
+
+> Note that higher-level implementations of this interface may choose to
+  define additional events with dedicated semantics not defined as part of
+  this low-level stream specification. Conformance with these event semantics
+  is out of scope for this interface, so you may also have to refer to the
+  documentation of such a higher-level implementation.
+
+See also [`ReadableStreamInterface`](#readablestreaminterface) and
+[`WritableStreamInterface`](#writablestreaminterface) for more details.
+
+## Creating streams
+
+ReactPHP uses the concept of "streams" throughout its ecosystem, so that
+many higher-level consumers of this package only deal with
+[stream usage](#stream-usage).
+This implies that stream instances are most often created within some
+higher-level components and many consumers never actually have to deal with
+creating a stream instance.
+
+* Use [react/socket](https://github.com/reactphp/socket)
+  if you want to accept incoming or establish outgoing plaintext TCP/IP or
+  secure TLS socket connection streams.
+* Use [react/http](https://github.com/reactphp/http)
+  if you want to receive an incoming HTTP request body streams.
+* Use [react/child-process](https://github.com/reactphp/child-process)
+  if you want to communicate with child processes via process pipes such as
+  STDIN, STDOUT, STDERR etc.
+* Use experimental [react/filesystem](https://github.com/reactphp/filesystem)
+  if you want to read from / write to the filesystem.
+* See also the last chapter for [more real-world applications](#more).
+
+However, if you are writing a lower-level component or want to create a stream
+instance from a stream resource, then the following chapter is for you.
+
+> Note that the following examples use `fopen()` and `stream_socket_client()`
+  for illustration purposes only.
+  These functions SHOULD NOT be used in a truly async program because each call
+  may take several seconds to complete and would block the EventLoop otherwise.
+  Additionally, the `fopen()` call will return a file handle on some platforms
+  which may or may not be supported by all EventLoop implementations.
+  As an alternative, you may want to use higher-level libraries listed above.
+
+### ReadableResourceStream
+
+The `ReadableResourceStream` is a concrete implementation of the
+[`ReadableStreamInterface`](#readablestreaminterface) for PHP's stream resources.
+
+This can be used to represent a read-only resource like a file stream opened in
+readable mode or a stream such as `STDIN`:
+
+```php
+$stream = new ReadableResourceStream(STDIN, $loop);
+$stream->on('data', function ($chunk) {
+    echo $chunk;
+});
+$stream->on('end', function () {
+    echo 'END';
+});
+```
+
+See also [`ReadableStreamInterface`](#readablestreaminterface) for more details.
+
+The first parameter given to the constructor MUST be a valid stream resource
+that is opened in reading mode (e.g. `fopen()` mode `r`).
+Otherwise, it will throw an `InvalidArgumentException`:
+
+```php
+// throws InvalidArgumentException
+$stream = new ReadableResourceStream(false, $loop);
+```
+
+See also the [`DuplexResourceStream`](#readableresourcestream) for read-and-write
+stream resources otherwise.
+
+Internally, this class tries to enable non-blocking mode on the stream resource
+which may not be supported for all stream resources.
+Most notably, this is not supported by pipes on Windows (STDIN etc.).
+If this fails, it will throw a `RuntimeException`:
+
+```php
+// throws RuntimeException on Windows
+$stream = new ReadableResourceStream(STDIN, $loop);
+```
+
+Once the constructor is called with a valid stream resource, this class will
+take care of the underlying stream resource.
+You SHOULD only use its public API and SHOULD NOT interfere with the underlying
+stream resource manually.
+
+This class takes an optional `int|null $readChunkSize` parameter that controls
+the maximum buffer size in bytes to read at once from the stream.
+You can use a `null` value here in order to apply its default value.
+This value SHOULD NOT be changed unless you know what you're doing.
+This can be a positive number which means that up to X bytes will be read
+at once from the underlying stream resource. Note that the actual number
+of bytes read may be lower if the stream resource has less than X bytes
+currently available.
+This can be `-1` which means "read everything available" from the
+underlying stream resource.
+This should read until the stream resource is not readable anymore
+(i.e. underlying buffer drained), note that this does not neccessarily
+mean it reached EOF.
+
+```php
+$stream = new ReadableResourceStream(STDIN, $loop, 8192);
+```
+
+> PHP bug warning: If the PHP process has explicitly been started without a
+  `STDIN` stream, then trying to read from `STDIN` may return data from
+  another stream resource. This does not happen if you start this with an empty
+  stream like `php test.php < /dev/null` instead of `php test.php <&-`.
+  See [#81](https://github.com/reactphp/stream/issues/81) for more details.
+
+### WritableResourceStream
+
+The `WritableResourceStream` is a concrete implementation of the
+[`WritableStreamInterface`](#writablestreaminterface) for PHP's stream resources.
+
+This can be used to represent a write-only resource like a file stream opened in
+writable mode or a stream such as `STDOUT` or `STDERR`:
+
+```php
+$stream = new WritableResourceStream(STDOUT, $loop);
+$stream->write('hello!');
+$stream->end();
+```
+
+See also [`WritableStreamInterface`](#writablestreaminterface) for more details.
+
+The first parameter given to the constructor MUST be a valid stream resource
+that is opened for writing.
+Otherwise, it will throw an `InvalidArgumentException`:
+
+```php
+// throws InvalidArgumentException
+$stream = new WritableResourceStream(false, $loop);
+```
+
+See also the [`DuplexResourceStream`](#readableresourcestream) for read-and-write
+stream resources otherwise.
+
+Internally, this class tries to enable non-blocking mode on the stream resource
+which may not be supported for all stream resources.
+Most notably, this is not supported by pipes on Windows (STDOUT, STDERR etc.).
+If this fails, it will throw a `RuntimeException`:
+
+```php
+// throws RuntimeException on Windows
+$stream = new WritableResourceStream(STDOUT, $loop);
+```
+
+Once the constructor is called with a valid stream resource, this class will
+take care of the underlying stream resource.
+You SHOULD only use its public API and SHOULD NOT interfere with the underlying
+stream resource manually.
+
+Any `write()` calls to this class will not be performed instantly, but will
+be performed asynchronously, once the EventLoop reports the stream resource is
+ready to accept data.
+For this, it uses an in-memory buffer string to collect all outstanding writes.
+This buffer has a soft-limit applied which defines how much data it is willing
+to accept before the caller SHOULD stop sending further data.
+
+This class takes an optional `int|null $writeBufferSoftLimit` parameter that controls
+this maximum buffer size in bytes.
+You can use a `null` value here in order to apply its default value.
+This value SHOULD NOT be changed unless you know what you're doing.
+
+```php
+$stream = new WritableResourceStream(STDOUT, $loop, 8192);
+```
+
+This class takes an optional `int|null $writeChunkSize` parameter that controls
+this maximum buffer size in bytes to write at once to the stream.
+You can use a `null` value here in order to apply its default value.
+This value SHOULD NOT be changed unless you know what you're doing.
+This can be a positive number which means that up to X bytes will be written
+at once to the underlying stream resource. Note that the actual number
+of bytes written may be lower if the stream resource has less than X bytes
+currently available.
+This can be `-1` which means "write everything available" to the
+underlying stream resource.
+
+```php
+$stream = new WritableResourceStream(STDOUT, $loop, null, 8192);
+```
+
+See also [`write()`](#write) for more details.
+
+### DuplexResourceStream
+
+The `DuplexResourceStream` is a concrete implementation of the
+[`DuplexStreamInterface`](#duplexstreaminterface) for PHP's stream resources.
+
+This can be used to represent a read-and-write resource like a file stream opened
+in read and write mode mode or a stream such as a TCP/IP connection:
+
+```php
+$conn = stream_socket_client('tcp://google.com:80');
+$stream = new DuplexResourceStream($conn, $loop);
+$stream->write('hello!');
+$stream->end();
+```
+
+See also [`DuplexStreamInterface`](#duplexstreaminterface) for more details.
+
+The first parameter given to the constructor MUST be a valid stream resource
+that is opened for reading *and* writing.
+Otherwise, it will throw an `InvalidArgumentException`:
+
+```php
+// throws InvalidArgumentException
+$stream = new DuplexResourceStream(false, $loop);
+```
+
+See also the [`ReadableResourceStream`](#readableresourcestream) for read-only
+and the [`WritableResourceStream`](#writableresourcestream) for write-only
+stream resources otherwise.
+
+Internally, this class tries to enable non-blocking mode on the stream resource
+which may not be supported for all stream resources.
+Most notably, this is not supported by pipes on Windows (STDOUT, STDERR etc.).
+If this fails, it will throw a `RuntimeException`:
+
+```php
+// throws RuntimeException on Windows
+$stream = new DuplexResourceStream(STDOUT, $loop);
+```
+
+Once the constructor is called with a valid stream resource, this class will
+take care of the underlying stream resource.
+You SHOULD only use its public API and SHOULD NOT interfere with the underlying
+stream resource manually.
+
+This class takes an optional `int|null $readChunkSize` parameter that controls
+the maximum buffer size in bytes to read at once from the stream.
+You can use a `null` value here in order to apply its default value.
+This value SHOULD NOT be changed unless you know what you're doing.
+This can be a positive number which means that up to X bytes will be read
+at once from the underlying stream resource. Note that the actual number
+of bytes read may be lower if the stream resource has less than X bytes
+currently available.
+This can be `-1` which means "read everything available" from the
+underlying stream resource.
+This should read until the stream resource is not readable anymore
+(i.e. underlying buffer drained), note that this does not neccessarily
+mean it reached EOF.
+
+```php
+$conn = stream_socket_client('tcp://google.com:80');
+$stream = new DuplexResourceStream($conn, $loop, 8192);
+```
+
+Any `write()` calls to this class will not be performed instantly, but will
+be performed asynchronously, once the EventLoop reports the stream resource is
+ready to accept data.
+For this, it uses an in-memory buffer string to collect all outstanding writes.
+This buffer has a soft-limit applied which defines how much data it is willing
+to accept before the caller SHOULD stop sending further data.
+
+This class takes another optional `WritableStreamInterface|null $buffer` parameter
+that controls this write behavior of this stream.
+You can use a `null` value here in order to apply its default value.
+This value SHOULD NOT be changed unless you know what you're doing.
+
+If you want to change the write buffer soft limit, you can pass an instance of
+[`WritableResourceStream`](#writableresourcestream) like this:
+
+```php
+$conn = stream_socket_client('tcp://google.com:80');
+$buffer = new WritableResourceStream($conn, $loop, 8192);
+$stream = new DuplexResourceStream($conn, $loop, null, $buffer);
+```
+
+See also [`WritableResourceStream`](#writableresourcestream) for more details.
+
+### ThroughStream
+
+The `ThroughStream` implements the
+[`DuplexStreamInterface`](#duplexstreaminterface) and will simply pass any data
+you write to it through to its readable end.
+
+```php
+$through = new ThroughStream();
+$through->on('data', $this->expectCallableOnceWith('hello'));
+
+$through->write('hello');
+```
+
+Similarly, the [`end()` method](#end) will end the stream and emit an
+[`end` event](#end-event) and then [`close()`](#close-1) the stream.
+The [`close()` method](#close-1) will close the stream and emit a
+[`close` event](#close-event).
+Accordingly, this is can also be used in a [`pipe()`](#pipe) context like this:
+
+```php
+$through = new ThroughStream();
+$source->pipe($through)->pipe($dest);
+```
+
+Optionally, its constructor accepts any callable function which will then be
+used to *filter* any data written to it. This function receives a single data
+argument as passed to the writable side and must return the data as it will be
+passed to its readable end:
+
+```php
+$through = new ThroughStream('strtoupper');
+$source->pipe($through)->pipe($dest);
+```
+
+Note that this class makes no assumptions about any data types. This can be
+used to convert data, for example for transforming any structured data into
+a newline-delimited JSON (NDJSON) stream like this:
+
+```php
+$through = new ThroughStream(function ($data) {
+    return json_encode($data) . PHP_EOL;
+});
+$through->on('data', $this->expectCallableOnceWith("[2, true]\n"));
+
+$through->write(array(2, true));
+```
+
+The callback function is allowed to throw an `Exception`. In this case,
+the stream will emit an `error` event and then [`close()`](#close-1) the stream.
+
+```php
+$through = new ThroughStream(function ($data) {
+    if (!is_string($data)) {
+        throw new \UnexpectedValueException('Only strings allowed');
+    }
+    return $data;
+});
+$through->on('error', $this->expectCallableOnce()));
+$through->on('close', $this->expectCallableOnce()));
+$through->on('data', $this->expectCallableNever()));
+
+$through->write(2);
+```
+
+### CompositeStream
+
+The `CompositeStream` implements the
+[`DuplexStreamInterface`](#duplexstreaminterface) and can be used to create a
+single duplex stream from two individual streams implementing
+[`ReadableStreamInterface`](#readablestreaminterface) and
+[`WritableStreamInterface`](#writablestreaminterface) respectively.
+
+This is useful for some APIs which may require a single
+[`DuplexStreamInterface`](#duplexstreaminterface) or simply because it's often
+more convenient to work with a single stream instance like this:
+
+```php
+$stdin = new ReadableResourceStream(STDIN, $loop);
+$stdout = new WritableResourceStream(STDOUT, $loop);
+
+$stdio = new CompositeStream($stdin, $stdout);
+
+$stdio->on('data', function ($chunk) use ($stdio) {
+    $stdio->write('You said: ' . $chunk);
+});
+```
+
+This is a well-behaving stream which forwards all stream events from the
+underlying streams and forwards all streams calls to the underlying streams.
+
+If you `write()` to the duplex stream, it will simply `write()` to the
+writable side and return its status.
+
+If you `end()` the duplex stream, it will `end()` the writable side and will
+`pause()` the readable side.
+
+If you `close()` the duplex stream, both input streams will be closed.
+If either of the two input streams emits a `close` event, the duplex stream
+will also close.
+If either of the two input streams is already closed while constructing the
+duplex stream, it will `close()` the other side and return a closed stream.
+
+## Usage
+
+The following example can be used to pipe the contents of a source file into
+a destination file without having to ever read the whole file into memory:
+
+```php
+$loop = new React\EventLoop\StreamSelectLoop;
+
+$source = new React\Stream\ReadableResourceStream(fopen('source.txt', 'r'), $loop);
+$dest = new React\Stream\WritableResourceStream(fopen('destination.txt', 'w'), $loop);
+
+$source->pipe($dest);
+
+$loop->run();
+```
+
+> Note that this example uses `fopen()` for illustration purposes only.
+  This should not be used in a truly async program because the filesystem is
+  inherently blocking and each call could potentially take several seconds.
+  See also [creating streams](#creating-streams) for more sophisticated
+  examples.
+
+## Install
+
+The recommended way to install this library is [through Composer](https://getcomposer.org).
+[New to Composer?](https://getcomposer.org/doc/00-intro.md)
+
+This will install the latest supported version:
+
+```bash
+$ composer require react/stream:^0.7.7
+```
+
+See also the [CHANGELOG](CHANGELOG.md) for details about version upgrades.
+
+This project aims to run on any platform and thus does not require any PHP
+extensions and supports running on legacy PHP 5.3 through current PHP 7+ and HHVM.
+It's *highly recommended to use PHP 7+* for this project due to its vast
+performance improvements.
+
+## Tests
+
+To run the test suite, you first need to clone this repo and then install all
+dependencies [through Composer](https://getcomposer.org):
+
+```bash
+$ composer install
+```
+
+To run the test suite, go to the project root and run:
+
+```bash
+$ php vendor/bin/phpunit
+```
+
+The test suite also contains a number of functional integration tests that rely
+on a stable internet connection.
+If you do not want to run these, they can simply be skipped like this:
+
+```bash
+$ php vendor/bin/phpunit --exclude-group internet
+```
+
+## License
+
+MIT, see [LICENSE file](LICENSE).
+
+## More
+
+* See [creating streams](#creating-streams) for more information on how streams
+  are created in real-world applications.
+* See our [users wiki](https://github.com/reactphp/react/wiki/Users) and the
+  [dependents on Packagist](https://packagist.org/packages/react/stream/dependents)
+  for a list of packages that use streams in real-world applications.
diff --git a/assets/php/vendor/react/stream/composer.json b/assets/php/vendor/react/stream/composer.json
new file mode 100644
index 0000000..f6faa66
--- /dev/null
+++ b/assets/php/vendor/react/stream/composer.json
@@ -0,0 +1,25 @@
+{
+    "name": "react/stream",
+    "description": "Event-driven readable and writable streams for non-blocking I/O in ReactPHP",
+    "keywords": ["event-driven", "readable", "writable", "stream", "non-blocking", "io", "pipe", "ReactPHP"],
+    "license": "MIT",
+    "require": {
+        "php": ">=5.3.8",
+        "react/event-loop": "^1.0 || ^0.5 || ^0.4 || ^0.3.5",
+        "evenement/evenement": "^3.0 || ^2.0 || ^1.0"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^6.4 || ^5.7 || ^4.8.35",
+        "clue/stream-filter": "~1.2"
+    },
+    "autoload": {
+        "psr-4": {
+            "React\\Stream\\": "src"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "React\\Tests\\Stream\\": "tests"
+        }
+    }
+}
diff --git a/assets/php/vendor/react/stream/examples/01-http.php b/assets/php/vendor/react/stream/examples/01-http.php
new file mode 100644
index 0000000..3687f7c
--- /dev/null
+++ b/assets/php/vendor/react/stream/examples/01-http.php
@@ -0,0 +1,40 @@
+<?php
+
+// Simple plaintext HTTP client example (for illustration purposes only).
+// This shows how a plaintext TCP/IP connection is established to then send an
+// application level protocol message (HTTP).
+// Real applications should use react/http-client instead!
+//
+// This simple example only accepts an optional host parameter to send the
+// request to.
+//
+// $ php examples/01-http.php
+// $ php examples/01-http.php reactphp.org
+
+use React\EventLoop\Factory;
+use React\Stream\DuplexResourceStream;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$host = isset($argv[1]) ? $argv[1] : 'www.google.com';
+
+// connect to tcp://www.google.com:80 (blocking call!)
+// for illustration purposes only, should use react/http-client or react/socket instead!
+$resource = stream_socket_client('tcp://' . $host . ':80');
+if (!$resource) {
+    exit(1);
+}
+
+$loop = Factory::create();
+$stream = new DuplexResourceStream($resource, $loop);
+
+$stream->on('data', function ($chunk) {
+    echo $chunk;
+});
+$stream->on('close', function () {
+    echo '[CLOSED]' . PHP_EOL;
+});
+
+$stream->write("GET / HTTP/1.0\r\nHost: $host\r\n\r\n");
+
+$loop->run();
diff --git a/assets/php/vendor/react/stream/examples/02-https.php b/assets/php/vendor/react/stream/examples/02-https.php
new file mode 100644
index 0000000..163f7c8
--- /dev/null
+++ b/assets/php/vendor/react/stream/examples/02-https.php
@@ -0,0 +1,40 @@
+<?php
+
+// Simple secure HTTPS client example (for illustration purposes only).
+// This shows how a secure TLS connection is established to then send an
+// application level protocol message (HTTP).
+// Real applications should use react/http-client instead!
+//
+// This simple example only accepts an optional host parameter to send the
+// request to.
+//
+// $ php examples/02-https.php
+// $ php examples/02-https.php reactphp.org
+
+use React\EventLoop\Factory;
+use React\Stream\DuplexResourceStream;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+$host = isset($argv[1]) ? $argv[1] : 'www.google.com';
+
+// connect to tls://www.google.com:443 (blocking call!)
+// for illustration purposes only, should use react/http-client or react/socket instead!
+$resource = stream_socket_client('tls://' . $host . ':443');
+if (!$resource) {
+    exit(1);
+}
+
+$loop = Factory::create();
+$stream = new DuplexResourceStream($resource, $loop);
+
+$stream->on('data', function ($chunk) {
+    echo $chunk;
+});
+$stream->on('close', function () {
+    echo '[CLOSED]' . PHP_EOL;
+});
+
+$stream->write("GET / HTTP/1.0\r\nHost: $host\r\n\r\n");
+
+$loop->run();
diff --git a/assets/php/vendor/react/stream/examples/11-cat.php b/assets/php/vendor/react/stream/examples/11-cat.php
new file mode 100644
index 0000000..90fadc0
--- /dev/null
+++ b/assets/php/vendor/react/stream/examples/11-cat.php
@@ -0,0 +1,28 @@
+<?php
+
+// Simple example piping everything from STDIN to STDOUT.
+// This allows you to output everything you type on your keyboard or to redirect
+// the pipes to show contents of files and other streams.
+//
+// $ php examples/11-cat.php
+// $ php examples/11-cat.php < README.md
+// $ echo hello | php examples/11-cat.php
+
+use React\EventLoop\Factory;
+use React\Stream\ReadableResourceStream;
+use React\Stream\WritableResourceStream;
+
+require __DIR__ . '/../vendor/autoload.php';
+
+if (DIRECTORY_SEPARATOR === '\\') {
+    fwrite(STDERR, 'Non-blocking console I/O not supported on Microsoft Windows' . PHP_EOL);
+    exit(1);
+}
+
+$loop = Factory::create();
+
+$stdout = new WritableResourceStream(STDOUT, $loop);
+$stdin = new ReadableResourceStream(STDIN, $loop);
+$stdin->pipe($stdout);
+
+$loop->run();
diff --git a/assets/php/vendor/react/stream/examples/91-benchmark-throughput.php b/assets/php/vendor/react/stream/examples/91-benchmark-throughput.php
new file mode 100644
index 0000000..ecf695c
--- /dev/null
+++ b/assets/php/vendor/react/stream/examples/91-benchmark-throughput.php
@@ -0,0 +1,62 @@
+<?php
+
+// Benchmark to measure throughput performance piping an input stream to an output stream.
+// This allows you to get an idea of how fast stream processing with PHP can be
+// and also to play around with differnt types of input and output streams.
+//
+// This example accepts a number of parameters to control the timeout (-t 1),
+// the input file (-i /dev/zero) and the output file (-o /dev/null).
+//
+// $ php examples/91-benchmark-throughput.php
+// $ php examples/91-benchmark-throughput.php -t 10 -o zero.bin
+// $ php examples/91-benchmark-throughput.php -t 60 -i zero.bin
+
+require __DIR__ . '/../vendor/autoload.php';
+
+if (DIRECTORY_SEPARATOR === '\\') {
+    fwrite(STDERR, 'Non-blocking console I/O not supported on Microsoft Windows' . PHP_EOL);
+    exit(1);
+}
+
+$args = getopt('i:o:t:');
+$if = isset($args['i']) ? $args['i'] : '/dev/zero';
+$of = isset($args['o']) ? $args['o'] : '/dev/null';
+$t  = isset($args['t']) ? $args['t'] : 1;
+
+// passing file descriptors requires mapping paths (https://bugs.php.net/bug.php?id=53465)
+$if = str_replace('/dev/fd/', 'php://fd/', $if);
+$of = str_replace('/dev/fd/', 'php://fd/', $of);
+
+$loop = new React\EventLoop\StreamSelectLoop();
+
+// setup information stream
+$info = new React\Stream\WritableResourceStream(STDERR, $loop);
+if (extension_loaded('xdebug')) {
+    $info->write('NOTICE: The "xdebug" extension is loaded, this has a major impact on performance.' . PHP_EOL);
+}
+$info->write('piping from ' . $if . ' to ' . $of . ' (for max ' . $t . ' second(s)) ...'. PHP_EOL);
+
+// setup input and output streams and pipe inbetween
+$fh = fopen($if, 'r');
+$in = new React\Stream\ReadableResourceStream($fh, $loop);
+$out = new React\Stream\WritableResourceStream(fopen($of, 'w'), $loop);
+$in->pipe($out);
+
+// stop input stream in $t seconds
+$start = microtime(true);
+$timeout = $loop->addTimer($t, function () use ($in, &$bytes) {
+    $in->close();
+});
+
+// print stream position once stream closes
+$in->on('close', function () use ($fh, $start, $loop, $timeout, $info) {
+    $t = microtime(true) - $start;
+    $loop->cancelTimer($timeout);
+
+    $bytes = ftell($fh);
+
+    $info->write('read ' . $bytes . ' byte(s) in ' . round($t, 3) . ' second(s) => ' . round($bytes / 1024 / 1024 / $t, 1) . ' MiB/s' . PHP_EOL);
+    $info->write('peak memory usage of ' . round(memory_get_peak_usage(true) / 1024 / 1024, 1) . ' MiB' . PHP_EOL);
+});
+
+$loop->run();
diff --git a/assets/php/vendor/react/stream/phpunit.xml.dist b/assets/php/vendor/react/stream/phpunit.xml.dist
new file mode 100644
index 0000000..13d3fab
--- /dev/null
+++ b/assets/php/vendor/react/stream/phpunit.xml.dist
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit backupGlobals="false"
+         backupStaticAttributes="false"
+         colors="true"
+         convertErrorsToExceptions="true"
+         convertNoticesToExceptions="true"
+         convertWarningsToExceptions="true"
+         processIsolation="false"
+         stopOnFailure="false"
+         syntaxCheck="false"
+         bootstrap="vendor/autoload.php"
+>
+    <testsuites>
+        <testsuite name="React Test Suite">
+            <directory>./tests/</directory>
+        </testsuite>
+    </testsuites>
+
+    <filter>
+        <whitelist>
+            <directory>./src/</directory>
+        </whitelist>
+    </filter>
+</phpunit>
diff --git a/assets/php/vendor/react/stream/src/CompositeStream.php b/assets/php/vendor/react/stream/src/CompositeStream.php
new file mode 100644
index 0000000..153f2a3
--- /dev/null
+++ b/assets/php/vendor/react/stream/src/CompositeStream.php
@@ -0,0 +1,82 @@
+<?php
+
+namespace React\Stream;
+
+use Evenement\EventEmitter;
+
+final class CompositeStream extends EventEmitter implements DuplexStreamInterface
+{
+    private $readable;
+    private $writable;
+    private $closed = false;
+
+    public function __construct(ReadableStreamInterface $readable, WritableStreamInterface $writable)
+    {
+        $this->readable = $readable;
+        $this->writable = $writable;
+
+        if (!$readable->isReadable() || !$writable->isWritable()) {
+            return $this->close();
+        }
+
+        Util::forwardEvents($this->readable, $this, array('data', 'end', 'error'));
+        Util::forwardEvents($this->writable, $this, array('drain', 'error', 'pipe'));
+
+        $this->readable->on('close', array($this, 'close'));
+        $this->writable->on('close', array($this, 'close'));
+    }
+
+    public function isReadable()
+    {
+        return $this->readable->isReadable();
+    }
+
+    public function pause()
+    {
+        $this->readable->pause();
+    }
+
+    public function resume()
+    {
+        if (!$this->writable->isWritable()) {
+            return;
+        }
+
+        $this->readable->resume();
+    }
+
+    public function pipe(WritableStreamInterface $dest, array $options = array())
+    {
+        return Util::pipe($this, $dest, $options);
+    }
+
+    public function isWritable()
+    {
+        return $this->writable->isWritable();
+    }
+
+    public function write($data)
+    {
+        return $this->writable->write($data);
+    }
+
+    public function end($data = null)
+    {
+        $this->readable->pause();
+        $this->writable->end($data);
+    }
+
+    public function close()
+    {
+        if ($this->closed) {
+            return;
+        }
+
+        $this->closed = true;
+        $this->readable->close();
+        $this->writable->close();
+
+        $this->emit('close');
+        $this->removeAllListeners();
+    }
+}
diff --git a/assets/php/vendor/react/stream/src/DuplexResourceStream.php b/assets/php/vendor/react/stream/src/DuplexResourceStream.php
new file mode 100644
index 0000000..982ebb0
--- /dev/null
+++ b/assets/php/vendor/react/stream/src/DuplexResourceStream.php
@@ -0,0 +1,224 @@
+<?php
+
+namespace React\Stream;
+
+use Evenement\EventEmitter;
+use React\EventLoop\LoopInterface;
+use InvalidArgumentException;
+
+final class DuplexResourceStream extends EventEmitter implements DuplexStreamInterface
+{
+    private $stream;
+    private $loop;
+
+    /**
+     * Controls the maximum buffer size in bytes to read at once from the stream.
+     *
+     * This can be a positive number which means that up to X bytes will be read
+     * at once from the underlying stream resource. Note that the actual number
+     * of bytes read may be lower if the stream resource has less than X bytes
+     * currently available.
+     *
+     * This can be `-1` which means read everything available from the
+     * underlying stream resource.
+     * This should read until the stream resource is not readable anymore
+     * (i.e. underlying buffer drained), note that this does not neccessarily
+     * mean it reached EOF.
+     *
+     * @var int
+     */
+    private $bufferSize;
+    private $buffer;
+
+    private $readable = true;
+    private $writable = true;
+    private $closing = false;
+    private $listening = false;
+
+    public function __construct($stream, LoopInterface $loop, $readChunkSize = null, WritableStreamInterface $buffer = null)
+    {
+        if (!is_resource($stream) || get_resource_type($stream) !== "stream") {
+             throw new InvalidArgumentException('First parameter must be a valid stream resource');
+        }
+
+        // ensure resource is opened for reading and wrting (fopen mode must contain "+")
+        $meta = stream_get_meta_data($stream);
+        if (isset($meta['mode']) && $meta['mode'] !== '' && strpos($meta['mode'], '+') === false) {
+            throw new InvalidArgumentException('Given stream resource is not opened in read and write mode');
+        }
+
+        // this class relies on non-blocking I/O in order to not interrupt the event loop
+        // e.g. pipes on Windows do not support this: https://bugs.php.net/bug.php?id=47918
+        if (stream_set_blocking($stream, 0) !== true) {
+            throw new \RuntimeException('Unable to set stream resource to non-blocking mode');
+        }
+
+        // Use unbuffered read operations on the underlying stream resource.
+        // Reading chunks from the stream may otherwise leave unread bytes in
+        // PHP's stream buffers which some event loop implementations do not
+        // trigger events on (edge triggered).
+        // This does not affect the default event loop implementation (level
+        // triggered), so we can ignore platforms not supporting this (HHVM).
+        // Pipe streams (such as STDIN) do not seem to require this and legacy
+        // PHP versions cause SEGFAULTs on unbuffered pipe streams, so skip this.
+        if (function_exists('stream_set_read_buffer') && !$this->isLegacyPipe($stream)) {
+            stream_set_read_buffer($stream, 0);
+        }
+
+        if ($buffer === null) {
+            $buffer = new WritableResourceStream($stream, $loop);
+        }
+
+        $this->stream = $stream;
+        $this->loop = $loop;
+        $this->bufferSize = ($readChunkSize === null) ? 65536 : (int)$readChunkSize;
+        $this->buffer = $buffer;
+
+        $that = $this;
+
+        $this->buffer->on('error', function ($error) use ($that) {
+            $that->emit('error', array($error));
+        });
+
+        $this->buffer->on('close', array($this, 'close'));
+
+        $this->buffer->on('drain', function () use ($that) {
+            $that->emit('drain');
+        });
+
+        $this->resume();
+    }
+
+    public function isReadable()
+    {
+        return $this->readable;
+    }
+
+    public function isWritable()
+    {
+        return $this->writable;
+    }
+
+    public function pause()
+    {
+        if ($this->listening) {
+            $this->loop->removeReadStream($this->stream);
+            $this->listening = false;
+        }
+    }
+
+    public function resume()
+    {
+        if (!$this->listening && $this->readable) {
+            $this->loop->addReadStream($this->stream, array($this, 'handleData'));
+            $this->listening = true;
+        }
+    }
+
+    public function write($data)
+    {
+        if (!$this->writable) {
+            return false;
+        }
+
+        return $this->buffer->write($data);
+    }
+
+    public function close()
+    {
+        if (!$this->writable && !$this->closing) {
+            return;
+        }
+
+        $this->closing = false;
+
+        $this->readable = false;
+        $this->writable = false;
+
+        $this->emit('close');
+        $this->pause();
+        $this->buffer->close();
+        $this->removeAllListeners();
+
+        if (is_resource($this->stream)) {
+            fclose($this->stream);
+        }
+    }
+
+    public function end($data = null)
+    {
+        if (!$this->writable) {
+            return;
+        }
+
+        $this->closing = true;
+
+        $this->readable = false;
+        $this->writable = false;
+        $this->pause();
+
+        $this->buffer->end($data);
+    }
+
+    public function pipe(WritableStreamInterface $dest, array $options = array())
+    {
+        return Util::pipe($this, $dest, $options);
+    }
+
+    /** @internal */
+    public function handleData($stream)
+    {
+        $error = null;
+        set_error_handler(function ($errno, $errstr, $errfile, $errline) use (&$error) {
+            $error = new \ErrorException(
+                $errstr,
+                0,
+                $errno,
+                $errfile,
+                $errline
+            );
+        });
+
+        $data = stream_get_contents($stream, $this->bufferSize);
+
+        restore_error_handler();
+
+        if ($error !== null) {
+            $this->emit('error', array(new \RuntimeException('Unable to read from stream: ' . $error->getMessage(), 0, $error)));
+            $this->close();
+            return;
+        }
+
+        if ($data !== '') {
+            $this->emit('data', array($data));
+        } else{
+            // no data read => we reached the end and close the stream
+            $this->emit('end');
+            $this->close();
+        }
+    }
+
+    /**
+     * Returns whether this is a pipe resource in a legacy environment
+     *
+     * This works around a legacy PHP bug (#61019) that was fixed in PHP 5.4.28+
+     * and PHP 5.5.12+ and newer.
+     *
+     * @param resource $resource
+     * @return bool
+     * @link https://github.com/reactphp/child-process/issues/40
+     *
+     * @codeCoverageIgnore
+     */
+    private function isLegacyPipe($resource)
+    {
+        if (PHP_VERSION_ID < 50428 || (PHP_VERSION_ID >= 50500 && PHP_VERSION_ID < 50512)) {
+            $meta = stream_get_meta_data($resource);
+
+            if (isset($meta['stream_type']) && $meta['stream_type'] === 'STDIO') {
+                return true;
+            }
+        }
+        return false;
+    }
+}
diff --git a/assets/php/vendor/react/stream/src/DuplexStreamInterface.php b/assets/php/vendor/react/stream/src/DuplexStreamInterface.php
new file mode 100644
index 0000000..631ce31
--- /dev/null
+++ b/assets/php/vendor/react/stream/src/DuplexStreamInterface.php
@@ -0,0 +1,39 @@
+<?php
+
+namespace React\Stream;
+
+/**
+ * The `DuplexStreamInterface` is responsible for providing an interface for
+ * duplex streams (both readable and writable).
+ *
+ * It builds on top of the existing interfaces for readable and writable streams
+ * and follows the exact same method and event semantics.
+ * If you're new to this concept, you should look into the
+ * `ReadableStreamInterface` and `WritableStreamInterface` first.
+ *
+ * Besides defining a few methods, this interface also implements the
+ * `EventEmitterInterface` which allows you to react to the same events defined
+ * on the `ReadbleStreamInterface` and `WritableStreamInterface`.
+ *
+ * The event callback functions MUST be a valid `callable` that obeys strict
+ * parameter definitions and MUST accept event parameters exactly as documented.
+ * The event callback functions MUST NOT throw an `Exception`.
+ * The return value of the event callback functions will be ignored and has no
+ * effect, so for performance reasons you're recommended to not return any
+ * excessive data structures.
+ *
+ * Every implementation of this interface MUST follow these event semantics in
+ * order to be considered a well-behaving stream.
+ *
+ * > Note that higher-level implementations of this interface may choose to
+ *   define additional events with dedicated semantics not defined as part of
+ *   this low-level stream specification. Conformance with these event semantics
+ *   is out of scope for this interface, so you may also have to refer to the
+ *   documentation of such a higher-level implementation.
+ *
+ * @see ReadableStreamInterface
+ * @see WritableStreamInterface
+ */
+interface DuplexStreamInterface extends ReadableStreamInterface, WritableStreamInterface
+{
+}
diff --git a/assets/php/vendor/react/stream/src/ReadableResourceStream.php b/assets/php/vendor/react/stream/src/ReadableResourceStream.php
new file mode 100644
index 0000000..015a96b
--- /dev/null
+++ b/assets/php/vendor/react/stream/src/ReadableResourceStream.php
@@ -0,0 +1,177 @@
+<?php
+
+namespace React\Stream;
+
+use Evenement\EventEmitter;
+use React\EventLoop\LoopInterface;
+use InvalidArgumentException;
+
+final class ReadableResourceStream extends EventEmitter implements ReadableStreamInterface
+{
+    /**
+     * @var resource
+     */
+    private $stream;
+
+    private $loop;
+
+    /**
+     * Controls the maximum buffer size in bytes to read at once from the stream.
+     *
+     * This value SHOULD NOT be changed unless you know what you're doing.
+     *
+     * This can be a positive number which means that up to X bytes will be read
+     * at once from the underlying stream resource. Note that the actual number
+     * of bytes read may be lower if the stream resource has less than X bytes
+     * currently available.
+     *
+     * This can be `-1` which means read everything available from the
+     * underlying stream resource.
+     * This should read until the stream resource is not readable anymore
+     * (i.e. underlying buffer drained), note that this does not neccessarily
+     * mean it reached EOF.
+     *
+     * @var int
+     */
+    private $bufferSize;
+
+    private $closed = false;
+    private $listening = false;
+
+    public function __construct($stream, LoopInterface $loop, $readChunkSize = null)
+    {
+        if (!is_resource($stream) || get_resource_type($stream) !== "stream") {
+             throw new InvalidArgumentException('First parameter must be a valid stream resource');
+        }
+
+        // ensure resource is opened for reading (fopen mode must contain "r" or "+")
+        $meta = stream_get_meta_data($stream);
+        if (isset($meta['mode']) && $meta['mode'] !== '' && strpos($meta['mode'], 'r') === strpos($meta['mode'], '+')) {
+            throw new InvalidArgumentException('Given stream resource is not opened in read mode');
+        }
+
+        // this class relies on non-blocking I/O in order to not interrupt the event loop
+        // e.g. pipes on Windows do not support this: https://bugs.php.net/bug.php?id=47918
+        if (stream_set_blocking($stream, 0) !== true) {
+            throw new \RuntimeException('Unable to set stream resource to non-blocking mode');
+        }
+
+        // Use unbuffered read operations on the underlying stream resource.
+        // Reading chunks from the stream may otherwise leave unread bytes in
+        // PHP's stream buffers which some event loop implementations do not
+        // trigger events on (edge triggered).
+        // This does not affect the default event loop implementation (level
+        // triggered), so we can ignore platforms not supporting this (HHVM).
+        // Pipe streams (such as STDIN) do not seem to require this and legacy
+        // PHP versions cause SEGFAULTs on unbuffered pipe streams, so skip this.
+        if (function_exists('stream_set_read_buffer') && !$this->isLegacyPipe($stream)) {
+            stream_set_read_buffer($stream, 0);
+        }
+
+        $this->stream = $stream;
+        $this->loop = $loop;
+        $this->bufferSize = ($readChunkSize === null) ? 65536 : (int)$readChunkSize;
+
+        $this->resume();
+    }
+
+    public function isReadable()
+    {
+        return !$this->closed;
+    }
+
+    public function pause()
+    {
+        if ($this->listening) {
+            $this->loop->removeReadStream($this->stream);
+            $this->listening = false;
+        }
+    }
+
+    public function resume()
+    {
+        if (!$this->listening && !$this->closed) {
+            $this->loop->addReadStream($this->stream, array($this, 'handleData'));
+            $this->listening = true;
+        }
+    }
+
+    public function pipe(WritableStreamInterface $dest, array $options = array())
+    {
+        return Util::pipe($this, $dest, $options);
+    }
+
+    public function close()
+    {
+        if ($this->closed) {
+            return;
+        }
+
+        $this->closed = true;
+
+        $this->emit('close');
+        $this->pause();
+        $this->removeAllListeners();
+
+        if (is_resource($this->stream)) {
+            fclose($this->stream);
+        }
+    }
+
+    /** @internal */
+    public function handleData()
+    {
+        $error = null;
+        set_error_handler(function ($errno, $errstr, $errfile, $errline) use (&$error) {
+            $error = new \ErrorException(
+                $errstr,
+                0,
+                $errno,
+                $errfile,
+                $errline
+            );
+        });
+
+        $data = stream_get_contents($this->stream, $this->bufferSize);
+
+        restore_error_handler();
+
+        if ($error !== null) {
+            $this->emit('error', array(new \RuntimeException('Unable to read from stream: ' . $error->getMessage(), 0, $error)));
+            $this->close();
+            return;
+        }
+
+        if ($data !== '') {
+            $this->emit('data', array($data));
+        } else{
+            // no data read => we reached the end and close the stream
+            $this->emit('end');
+            $this->close();
+        }
+    }
+
+    /**
+     * Returns whether this is a pipe resource in a legacy environment
+     *
+     * This works around a legacy PHP bug (#61019) that was fixed in PHP 5.4.28+
+     * and PHP 5.5.12+ and newer.
+     *
+     * @param resource $resource
+     * @return bool
+     * @link https://github.com/reactphp/child-process/issues/40
+     *
+     * @codeCoverageIgnore
+     */
+    private function isLegacyPipe($resource)
+    {
+        if (PHP_VERSION_ID < 50428 || (PHP_VERSION_ID >= 50500 && PHP_VERSION_ID < 50512)) {
+            $meta = stream_get_meta_data($resource);
+
+            if (isset($meta['stream_type']) && $meta['stream_type'] === 'STDIO') {
+                return true;
+            }
+        }
+        return false;
+    }
+}
diff --git a/assets/php/vendor/react/stream/src/ReadableStreamInterface.php b/assets/php/vendor/react/stream/src/ReadableStreamInterface.php
new file mode 100644
index 0000000..2b4c3d0
--- /dev/null
+++ b/assets/php/vendor/react/stream/src/ReadableStreamInterface.php
@@ -0,0 +1,362 @@
+<?php
+
+namespace React\Stream;
+
+use Evenement\EventEmitterInterface;
+
+/**
+ * The `ReadableStreamInterface` is responsible for providing an interface for
+ * read-only streams and the readable side of duplex streams.
+ *
+ * Besides defining a few methods, this interface also implements the
+ * `EventEmitterInterface` which allows you to react to certain events:
+ *
+ * data event:
+ *     The `data` event will be emitted whenever some data was read/received
+ *     from this source stream.
+ *     The event receives a single mixed argument for incoming data.
+ *
+ *     ```php
+ *     $stream->on('data', function ($data) {
+ *         echo $data;
+ *     });
+ *     ```
+ *
+ *     This event MAY be emitted any number of times, which may be zero times if
+ *     this stream does not send any data at all.
+ *     It SHOULD not be emitted after an `end` or `close` event.
+ *
+ *     The given `$data` argument may be of mixed type, but it's usually
+ *     recommended it SHOULD be a `string` value or MAY use a type that allows
+ *     representation as a `string` for maximum compatibility.
+ *
+ *     Many common streams (such as a TCP/IP connection or a file-based stream)
+ *     will emit the raw (binary) payload data that is received over the wire as
+ *     chunks of `string` values.
+ *
+ *     Due to the stream-based nature of this, the sender may send any number
+ *     of chunks with varying sizes. There are no guarantees that these chunks
+ *     will be received with the exact same framing the sender intended to send.
+ *     In other words, many lower-level protocols (such as TCP/IP) transfer the
+ *     data in chunks that may be anywhere between single-byte values to several
+ *     dozens of kilobytes. You may want to apply a higher-level protocol to
+ *     these low-level data chunks in order to achieve proper message framing.
+ *
+ * end event:
+ *     The `end` event will be emitted once the source stream has successfully
+ *     reached the end of the stream (EOF).
+ *
+ *     ```php
+ *     $stream->on('end', function () {
+ *         echo 'END';
+ *     });
+ *     ```
+ *
+ *     This event SHOULD be emitted once or never at all, depending on whether
+ *     a successful end was detected.
+ *     It SHOULD NOT be emitted after a previous `end` or `close` event.
+ *     It MUST NOT be emitted if the stream closes due to a non-successful
+ *     end, such as after a previous `error` event.
+ *
+ *     After the stream is ended, it MUST switch to non-readable mode,
+ *     see also `isReadable()`.
+ *
+ *     This event will only be emitted if the *end* was reached successfully,
+ *     not if the stream was interrupted by an unrecoverable error or explicitly
+ *     closed. Not all streams know this concept of a "successful end".
+ *     Many use-cases involve detecting when the stream closes (terminates)
+ *     instead, in this case you should use the `close` event.
+ *     After the stream emits an `end` event, it SHOULD usually be followed by a
+ *     `close` event.
+ *
+ *     Many common streams (such as a TCP/IP connection or a file-based stream)
+ *     will emit this event if either the remote side closes the connection or
+ *     a file handle was successfully read until reaching its end (EOF).
+ *
+ *     Note that this event should not be confused with the `end()` method.
+ *     This event defines a successful end *reading* from a source stream, while
+ *     the `end()` method defines *writing* a successful end to a destination
+ *     stream.
+ *
+ * error event:
+ *     The `error` event will be emitted once a fatal error occurs, usually while
+ *     trying to read from this stream.
+ *     The event receives a single `Exception` argument for the error instance.
+ *
+ *     ```php
+ *     $stream->on('error', function (Exception $e) {
+ *         echo 'Error: ' . $e->getMessage() . PHP_EOL;
+ *     });
+ *     ```
+ *
+ *     This event SHOULD be emitted once the stream detects a fatal error, such
+ *     as a fatal transmission error or after an unexpected `data` or premature
+ *     `end` event.
+ *     It SHOULD NOT be emitted after a previous `error`, `end` or `close` event.
+ *     It MUST NOT be emitted if this is not a fatal error condition, such as
+ *     a temporary network issue that did not cause any data to be lost.
+ *
+ *     After the stream errors, it MUST close the stream and SHOULD thus be
+ *     followed by a `close` event and then switch to non-readable mode, see
+ *     also `close()` and `isReadable()`.
+ *
+ *     Many common streams (such as a TCP/IP connection or a file-based stream)
+ *     only deal with data transmission and do not make assumption about data
+ *     boundaries (such as unexpected `data` or premature `end` events).
+ *     In other words, many lower-level protocols (such as TCP/IP) may choose
+ *     to only emit this for a fatal transmission error once and will then
+ *     close (terminate) the stream in response.
+ *
+ *     If this stream is a `DuplexStreamInterface`, you should also notice
+ *     how the writable side of the stream also implements an `error` event.
+ *     In other words, an error may occur while either reading or writing the
+ *     stream which should result in the same error processing.
+ *
+ * close event:
+ *     The `close` event will be emitted once the stream closes (terminates).
+ *
+ *     ```php
+ *     $stream->on('close', function () {
+ *         echo 'CLOSED';
+ *     });
+ *     ```
+ *
+ *     This event SHOULD be emitted once or never at all, depending on whether
+ *     the stream ever terminates.
+ *     It SHOULD NOT be emitted after a previous `close` event.
+ *
+ *     After the stream is closed, it MUST switch to non-readable mode,
+ *     see also `isReadable()`.
+ *
+ *     Unlike the `end` event, this event SHOULD be emitted whenever the stream
+ *     closes, irrespective of whether this happens implicitly due to an
+ *     unrecoverable error or explicitly when either side closes the stream.
+ *     If you only want to detect a *successful* end, you should use the `end`
+ *     event instead.
+ *
+ *     Many common streams (such as a TCP/IP connection or a file-based stream)
+ *     will likely choose to emit this event after reading a *successful* `end`
+ *     event or after a fatal transmission `error` event.
+ *
+ *     If this stream is a `DuplexStreamInterface`, you should also notice
+ *     how the writable side of the stream also implements a `close` event.
+ *     In other words, after receiving this event, the stream MUST switch into
+ *     non-writable AND non-readable mode, see also `isWritable()`.
+ *     Note that this event should not be confused with the `end` event.
+ *
+ * The event callback functions MUST be a valid `callable` that obeys strict
+ * parameter definitions and MUST accept event parameters exactly as documented.
+ * The event callback functions MUST NOT throw an `Exception`.
+ * The return value of the event callback functions will be ignored and has no
+ * effect, so for performance reasons you're recommended to not return any
+ * excessive data structures.
+ *
+ * Every implementation of this interface MUST follow these event semantics in
+ * order to be considered a well-behaving stream.
+ *
+ * > Note that higher-level implementations of this interface may choose to
+ *   define additional events with dedicated semantics not defined as part of
+ *   this low-level stream specification. Conformance with these event semantics
+ *   is out of scope for this interface, so you may also have to refer to the
+ *   documentation of such a higher-level implementation.
+ *
+ * @see EventEmitterInterface
+ */
+interface ReadableStreamInterface extends EventEmitterInterface
+{
+    /**
+     * Checks whether this stream is in a readable state (not closed already).
+     *
+     * This method can be used to check if the stream still accepts incoming
+     * data events or if it is ended or closed already.
+     * Once the stream is non-readable, no further `data` or `end` events SHOULD
+     * be emitted.
+     *
+     * ```php
+     * assert($stream->isReadable() === false);
+     *
+     * $stream->on('data', assertNeverCalled());
+     * $stream->on('end', assertNeverCalled());
+     * ```
+     *
+     * A successfully opened stream always MUST start in readable mode.
+     *
+     * Once the stream ends or closes, it MUST switch to non-readable mode.
+     * This can happen any time, explicitly through `close()` or
+     * implicitly due to a remote close or an unrecoverable transmission error.
+     * Once a stream has switched to non-readable mode, it MUST NOT transition
+     * back to readable mode.
+     *
+     * If this stream is a `DuplexStreamInterface`, you should also notice
+     * how the writable side of the stream also implements an `isWritable()`
+     * method. Unless this is a half-open duplex stream, they SHOULD usually
+     * have the same return value.
+     *
+     * @return bool
+     */
+    public function isReadable();
+
+    /**
+     * Pauses reading incoming data events.
+     *
+     * Removes the data source file descriptor from the event loop. This
+     * allows you to throttle incoming data.
+     *
+     * Unless otherwise noted, a successfully opened stream SHOULD NOT start
+     * in paused state.
+     *
+     * Once the stream is paused, no futher `data` or `end` events SHOULD
+     * be emitted.
+     *
+     * ```php
+     * $stream->pause();
+     *
+     * $stream->on('data', assertShouldNeverCalled());
+     * $stream->on('end', assertShouldNeverCalled());
+     * ```
+     *
+     * This method is advisory-only, though generally not recommended, the
+     * stream MAY continue emitting `data` events.
+     *
+     * You can continue processing events by calling `resume()` again.
+     *
+     * Note that both methods can be called any number of times, in particular
+     * calling `pause()` more than once SHOULD NOT have any effect.
+     *
+     * @see self::resume()
+     * @return void
+     */
+    public function pause();
+
+    /**
+     * Resumes reading incoming data events.
+     *
+     * Re-attach the data source after a previous `pause()`.
+     *
+     * ```php
+     * $stream->pause();
+     *
+     * $loop->addTimer(1.0, function () use ($stream) {
+     *     $stream->resume();
+     * });
+     * ```
+     *
+     * Note that both methods can be called any number of times, in particular
+     * calling `resume()` without a prior `pause()` SHOULD NOT have any effect.
+     *
+     * @see self::pause()
+     * @return void
+     */
+    public function resume();
+
+    /**
+     * Pipes all the data from this readable source into the given writable destination.
+     *
+     * Automatically sends all incoming data to the destination.
+     * Automatically throttles the source based on what the destination can handle.
+     *
+     * ```php
+     * $source->pipe($dest);
+     * ```
+     *
+     * Similarly, you can also pipe an instance implementing `DuplexStreamInterface`
+     * into itself in order to write back all the data that is received.
+     * This may be a useful feature for a TCP/IP echo service:
+     *
+     * ```php
+     * $connection->pipe($connection);
+     * ```
+     *
+     * This method returns the destination stream as-is, which can be used to
+     * set up chains of piped streams:
+     *
+     * ```php
+     * $source->pipe($decodeGzip)->pipe($filterBadWords)->pipe($dest);
+     * ```
+     *
+     * By default, this will call `end()` on the destination stream once the
+     * source stream emits an `end` event. This can be disabled like this:
+     *
+     * ```php
+     * $source->pipe($dest, array('end' => false));
+     * ```
+     *
+     * Note that this only applies to the `end` event.
+     * If an `error` or explicit `close` event happens on the source stream,
+     * you'll have to manually close the destination stream:
+     *
+     * ```php
+     * $source->pipe($dest);
+     * $source->on('close', function () use ($dest) {
+     *     $dest->end('BYE!');
+     * });
+     * ```
+     *
+     * If the source stream is not readable (closed state), then this is a NO-OP.
+     *
+     * ```php
+     * $source->close();
+     * $source->pipe($dest); // NO-OP
+     * ```
+     *
+     * If the destinantion stream is not writable (closed state), then this will simply
+     * throttle (pause) the source stream:
+     *
+     * ```php
+     * $dest->close();
+     * $source->pipe($dest); // calls $source->pause()
+     * ```
+     *
+     * Similarly, if the destination stream is closed while the pipe is still
+     * active, it will also throttle (pause) the source stream:
+     *
+     * ```php
+     * $source->pipe($dest);
+     * $dest->close(); // calls $source->pause()
+     * ```
+     *
+     * Once the pipe is set up successfully, the destination stream MUST emit
+     * a `pipe` event with this source stream an event argument.
+     *
+     * @param WritableStreamInterface $dest
+     * @param array $options
+     * @return WritableStreamInterface $dest stream as-is
+     */
+    public function pipe(WritableStreamInterface $dest, array $options = array());
+
+    /**
+     * Closes the stream (forcefully).
+     *
+     * This method can be used to (forcefully) close the stream.
+     *
+     * ```php
+     * $stream->close();
+     * ```
+     *
+     * Once the stream is closed, it SHOULD emit a `close` event.
+     * Note that this event SHOULD NOT be emitted more than once, in particular
+     * if this method is called multiple times.
+     *
+     * After calling this method, the stream MUST switch into a non-readable
+     * mode, see also `isReadable()`.
+     * This means that no further `data` or `end` events SHOULD be emitted.
+     *
+     * ```php
+     * $stream->close();
+     * assert($stream->isReadable() === false);
+     *
+     * $stream->on('data', assertNeverCalled());
+     * $stream->on('end', assertNeverCalled());
+     * ```
+     *
+     * If this stream is a `DuplexStreamInterface`, you should also notice
+     * how the writable side of the stream also implements a `close()` method.
+     * In other words, after calling this method, the stream MUST switch into
+     * non-writable AND non-readable mode, see also `isWritable()`.
+     * Note that this method should not be confused with the `end()` method.
+     *
+     * @return void
+     * @see WritableStreamInterface::close()
+     */
+    public function close();
+}
diff --git a/assets/php/vendor/react/stream/src/ThroughStream.php b/assets/php/vendor/react/stream/src/ThroughStream.php
new file mode 100644
index 0000000..da2fbb0
--- /dev/null
+++ b/assets/php/vendor/react/stream/src/ThroughStream.php
@@ -0,0 +1,190 @@
+<?php
+
+namespace React\Stream;
+
+use Evenement\EventEmitter;
+use InvalidArgumentException;
+
+/**
+ * The `ThroughStream` implements the
+ * [`DuplexStreamInterface`](#duplexstreaminterface) and will simply pass any data
+ * you write to it through to its readable end.
+ *
+ * ```php
+ * $through = new ThroughStream();
+ * $through->on('data', $this->expectCallableOnceWith('hello'));
+ *
+ * $through->write('hello');
+ * ```
+ *
+ * Similarly, the [`end()` method](#end) will end the stream and emit an
+ * [`end` event](#end-event) and then [`close()`](#close-1) the stream.
+ * The [`close()` method](#close-1) will close the stream and emit a
+ * [`close` event](#close-event).
+ * Accordingly, this is can also be used in a [`pipe()`](#pipe) context like this:
+ *
+ * ```php
+ * $through = new ThroughStream();
+ * $source->pipe($through)->pipe($dest);
+ * ```
+ *
+ * Optionally, its constructor accepts any callable function which will then be
+ * used to *filter* any data written to it. This function receives a single data
+ * argument as passed to the writable side and must return the data as it will be
+ * passed to its readable end:
+ *
+ * ```php
+ * $through = new ThroughStream('strtoupper');
+ * $source->pipe($through)->pipe($dest);
+ * ```
+ *
+ * Note that this class makes no assumptions about any data types. This can be
+ * used to convert data, for example for transforming any structured data into
+ * a newline-delimited JSON (NDJSON) stream like this:
+ *
+ * ```php
+ * $through = new ThroughStream(function ($data) {
+ *     return json_encode($data) . PHP_EOL;
+ * });
+ * $through->on('data', $this->expectCallableOnceWith("[2, true]\n"));
+ *
+ * $through->write(array(2, true));
+ * ```
+ *
+ * The callback function is allowed to throw an `Exception`. In this case,
+ * the stream will emit an `error` event and then [`close()`](#close-1) the stream.
+ *
+ * ```php
+ * $through = new ThroughStream(function ($data) {
+ *     if (!is_string($data)) {
+ *         throw new \UnexpectedValueException('Only strings allowed');
+ *     }
+ *     return $data;
+ * });
+ * $through->on('error', $this->expectCallableOnce()));
+ * $through->on('close', $this->expectCallableOnce()));
+ * $through->on('data', $this->expectCallableNever()));
+ *
+ * $through->write(2);
+ * ```
+ *
+ * @see WritableStreamInterface::write()
+ * @see WritableStreamInterface::end()
+ * @see DuplexStreamInterface::close()
+ * @see WritableStreamInterface::pipe()
+ */
+final class ThroughStream extends EventEmitter implements DuplexStreamInterface
+{
+    private $readable = true;
+    private $writable = true;
+    private $closed = false;
+    private $paused = false;
+    private $drain = false;
+    private $callback;
+
+    public function __construct($callback = null)
+    {
+        if ($callback !== null && !is_callable($callback)) {
+            throw new InvalidArgumentException('Invalid transformation callback given');
+        }
+
+        $this->callback = $callback;
+    }
+
+    public function pause()
+    {
+        $this->paused = true;
+    }
+
+    public function resume()
+    {
+        if ($this->drain) {
+            $this->drain = false;
+            $this->emit('drain');
+        }
+        $this->paused = false;
+    }
+
+    public function pipe(WritableStreamInterface $dest, array $options = array())
+    {
+        return Util::pipe($this, $dest, $options);
+    }
+
+    public function isReadable()
+    {
+        return $this->readable;
+    }
+
+    public function isWritable()
+    {
+        return $this->writable;
+    }
+
+    public function write($data)
+    {
+        if (!$this->writable) {
+            return false;
+        }
+
+        if ($this->callback !== null) {
+            try {
+                $data = call_user_func($this->callback, $data);
+            } catch (\Exception $e) {
+                $this->emit('error', array($e));
+                $this->close();
+
+                return false;
+            }
+        }
+
+        $this->emit('data', array($data));
+
+        if ($this->paused) {
+            $this->drain = true;
+            return false;
+        }
+
+        return true;
+    }
+
+    public function end($data = null)
+    {
+        if (!$this->writable) {
+            return;
+        }
+
+        if (null !== $data) {
+            $this->write($data);
+
+            // return if write() already caused the stream to close
+            if (!$this->writable) {
+                return;
+            }
+        }
+
+        $this->readable = false;
+        $this->writable = false;
+        $this->paused = true;
+        $this->drain = false;
+
+        $this->emit('end');
+        $this->close();
+    }
+
+    public function close()
+    {
+        if ($this->closed) {
+            return;
+        }
+
+        $this->readable = false;
+        $this->writable = false;
+        $this->closed = true;
+        $this->paused = true;
+        $this->drain = false;
+        $this->callback = null;
+
+        $this->emit('close');
+        $this->removeAllListeners();
+    }
+}
diff --git a/assets/php/vendor/react/stream/src/Util.php b/assets/php/vendor/react/stream/src/Util.php
new file mode 100644
index 0000000..14ddcfc
--- /dev/null
+++ b/assets/php/vendor/react/stream/src/Util.php
@@ -0,0 +1,75 @@
+<?php
+
+namespace React\Stream;
+
+final class Util
+{
+    /**
+     * Pipes all the data from the given $source into the $dest
+     *
+     * @param ReadableStreamInterface $source
+     * @param WritableStreamInterface $dest
+     * @param array $options
+     * @return WritableStreamInterface $dest stream as-is
+     * @see ReadableStreamInterface::pipe() for more details
+     */
+    public static function pipe(ReadableStreamInterface $source, WritableStreamInterface $dest, array $options = array())
+    {
+        // source not readable => NO-OP
+        if (!$source->isReadable()) {
+            return $dest;
+        }
+
+        // destination not writable => just pause() source
+        if (!$dest->isWritable()) {
+            $source->pause();
+
+            return $dest;
+        }
+
+        $dest->emit('pipe', array($source));
+
+        // forward all source data events as $dest->write()
+        $source->on('data', $dataer = function ($data) use ($source, $dest) {
+            $feedMore = $dest->write($data);
+
+            if (false === $feedMore) {
+                $source->pause();
+            }
+        });
+        $dest->on('close', function () use ($source, $dataer) {
+            $source->removeListener('data', $dataer);
+            $source->pause();
+        });
+
+        // forward destination drain as $source->resume()
+        $dest->on('drain', $drainer = function () use ($source) {
+            $source->resume();
+        });
+        $source->on('close', function () use ($dest, $drainer) {
+            $dest->removeListener('drain', $drainer);
+        });
+
+        // forward end event from source as $dest->end()
+        $end = isset($options['end']) ? $options['end'] : true;
+        if ($end) {
+            $source->on('end', $ender = function () use ($dest) {
+                $dest->end();
+            });
+            $dest->on('close', function () use ($source, $ender) {
+                $source->removeListener('end', $ender);
+            });
+        }
+
+        return $dest;
+    }
+
+    public static function forwardEvents($source, $target, array $events)
+    {
+        foreach ($events as $event) {
+            $source->on($event, function () use ($event, $target) {
+                $target->emit($event, func_get_args());
+            });
+        }
+    }
+}
diff --git a/assets/php/vendor/react/stream/src/WritableResourceStream.php b/assets/php/vendor/react/stream/src/WritableResourceStream.php
new file mode 100644
index 0000000..7e04205
--- /dev/null
+++ b/assets/php/vendor/react/stream/src/WritableResourceStream.php
@@ -0,0 +1,171 @@
+<?php
+
+namespace React\Stream;
+
+use Evenement\EventEmitter;
+use React\EventLoop\LoopInterface;
+
+final class WritableResourceStream extends EventEmitter implements WritableStreamInterface
+{
+    private $stream;
+    private $loop;
+    private $softLimit;
+    private $writeChunkSize;
+
+    private $listening = false;
+    private $writable = true;
+    private $closed = false;
+    private $data = '';
+
+    public function __construct($stream, LoopInterface $loop, $writeBufferSoftLimit = null, $writeChunkSize = null)
+    {
+        if (!is_resource($stream) || get_resource_type($stream) !== "stream") {
+            throw new \InvalidArgumentException('First parameter must be a valid stream resource');
+        }
+
+        // ensure resource is opened for writing (fopen mode must contain either of "waxc+")
+        $meta = stream_get_meta_data($stream);
+        if (isset($meta['mode']) && $meta['mode'] !== '' && strtr($meta['mode'], 'waxc+', '.....') === $meta['mode']) {
+            throw new \InvalidArgumentException('Given stream resource is not opened in write mode');
+        }
+
+        // this class relies on non-blocking I/O in order to not interrupt the event loop
+        // e.g. pipes on Windows do not support this: https://bugs.php.net/bug.php?id=47918
+        if (stream_set_blocking($stream, 0) !== true) {
+            throw new \RuntimeException('Unable to set stream resource to non-blocking mode');
+        }
+
+        $this->stream = $stream;
+        $this->loop = $loop;
+        $this->softLimit = ($writeBufferSoftLimit === null) ? 65536 : (int)$writeBufferSoftLimit;
+        $this->writeChunkSize = ($writeChunkSize === null) ? -1 : (int)$writeChunkSize;
+    }
+
+    public function isWritable()
+    {
+        return $this->writable;
+    }
+
+    public function write($data)
+    {
+        if (!$this->writable) {
+            return false;
+        }
+
+        $this->data .= $data;
+
+        if (!$this->listening && $this->data !== '') {
+            $this->listening = true;
+
+            $this->loop->addWriteStream($this->stream, array($this, 'handleWrite'));
+        }
+
+        return !isset($this->data[$this->softLimit - 1]);
+    }
+
+    public function end($data = null)
+    {
+        if (null !== $data) {
+            $this->write($data);
+        }
+
+        $this->writable = false;
+
+        // close immediately if buffer is already empty
+        // otherwise wait for buffer to flush first
+        if ($this->data === '') {
+            $this->close();
+        }
+    }
+
+    public function close()
+    {
+        if ($this->closed) {
+            return;
+        }
+
+        if ($this->listening) {
+            $this->listening = false;
+            $this->loop->removeWriteStream($this->stream);
+        }
+
+        $this->closed = true;
+        $this->writable = false;
+        $this->data = '';
+
+        $this->emit('close');
+        $this->removeAllListeners();
+
+        if (is_resource($this->stream)) {
+            fclose($this->stream);
+        }
+    }
+
+    /** @internal */
+    public function handleWrite()
+    {
+        $error = null;
+        set_error_handler(function ($errno, $errstr, $errfile, $errline) use (&$error) {
+            $error = array(
+                'message' => $errstr,
+                'number' => $errno,
+                'file' => $errfile,
+                'line' => $errline
+            );
+        });
+
+        if ($this->writeChunkSize === -1) {
+            $sent = fwrite($this->stream, $this->data);
+        } else {
+            $sent = fwrite($this->stream, $this->data, $this->writeChunkSize);
+        }
+
+        restore_error_handler();
+
+        // Only report errors if *nothing* could be sent.
+        // Any hard (permanent) error will fail to send any data at all.
+        // Sending excessive amounts of data will only flush *some* data and then
+        // report a temporary error (EAGAIN) which we do not raise here in order
+        // to keep the stream open for further tries to write.
+        // Should this turn out to be a permanent error later, it will eventually
+        // send *nothing* and we can detect this.
+        if ($sent === 0 || $sent === false) {
+            if ($error !== null) {
+                $error = new \ErrorException(
+                    $error['message'],
+                    0,
+                    $error['number'],
+                    $error['file'],
+                    $error['line']
+                );
+            }
+
+            $this->emit('error', array(new \RuntimeException('Unable to write to stream: ' . ($error !== null ? $error->getMessage() : 'Unknown error'), 0, $error)));
+            $this->close();
+
+            return;
+        }
+
+        $exceeded = isset($this->data[$this->softLimit - 1]);
+        $this->data = (string) substr($this->data, $sent);
+
+        // buffer has been above limit and is now below limit
+        if ($exceeded && !isset($this->data[$this->softLimit - 1])) {
+            $this->emit('drain');
+        }
+
+        // buffer is now completely empty => stop trying to write
+        if ($this->data === '') {
+            // stop waiting for resource to be writable
+            if ($this->listening) {
+                $this->loop->removeWriteStream($this->stream);
+                $this->listening = false;
+            }
+
+            // buffer is end()ing and now completely empty => close buffer
+            if (!$this->writable) {
+                $this->close();
+            }
+        }
+    }
+}
diff --git a/assets/php/vendor/react/stream/src/WritableStreamInterface.php b/assets/php/vendor/react/stream/src/WritableStreamInterface.php
new file mode 100644
index 0000000..3bc932e
--- /dev/null
+++ b/assets/php/vendor/react/stream/src/WritableStreamInterface.php
@@ -0,0 +1,347 @@
+<?php
+
+namespace React\Stream;
+
+use Evenement\EventEmitterInterface;
+
+/**
+ * The `WritableStreamInterface` is responsible for providing an interface for
+ * write-only streams and the writable side of duplex streams.
+ *
+ * Besides defining a few methods, this interface also implements the
+ * `EventEmitterInterface` which allows you to react to certain events:
+ *
+ * drain event:
+ *     The `drain` event will be emitted whenever the write buffer became full
+ *     previously and is now ready to accept more data.
+ *
+ *     ```php
+ *     $stream->on('drain', function () use ($stream) {
+ *         echo 'Stream is now ready to accept more data';
+ *     });
+ *     ```
+ *
+ *     This event SHOULD be emitted once every time the buffer became full
+ *     previously and is now ready to accept more data.
+ *     In other words, this event MAY be emitted any number of times, which may
+ *     be zero times if the buffer never became full in the first place.
+ *     This event SHOULD NOT be emitted if the buffer has not become full
+ *     previously.
+ *
+ *     This event is mostly used internally, see also `write()` for more details.
+ *
+ * pipe event:
+ *     The `pipe` event will be emitted whenever a readable stream is `pipe()`d
+ *     into this stream.
+ *     The event receives a single `ReadableStreamInterface` argument for the
+ *     source stream.
+ *
+ *     ```php
+ *     $stream->on('pipe', function (ReadableStreamInterface $source) use ($stream) {
+ *         echo 'Now receiving piped data';
+ *
+ *         // explicitly close target if source emits an error
+ *         $source->on('error', function () use ($stream) {
+ *             $stream->close();
+ *         });
+ *     });
+ *
+ *     $source->pipe($stream);
+ *     ```
+ *
+ *     This event MUST be emitted once for each readable stream that is
+ *     successfully piped into this destination stream.
+ *     In other words, this event MAY be emitted any number of times, which may
+ *     be zero times if no stream is ever piped into this stream.
+ *     This event MUST NOT be emitted if either the source is not readable
+ *     (closed already) or this destination is not writable (closed already).
+ *
+ *     This event is mostly used internally, see also `pipe()` for more details.
+ *
+ * error event:
+ *     The `error` event will be emitted once a fatal error occurs, usually while
+ *     trying to write to this stream.
+ *     The event receives a single `Exception` argument for the error instance.
+ *
+ *     ```php
+ *     $stream->on('error', function (Exception $e) {
+ *         echo 'Error: ' . $e->getMessage() . PHP_EOL;
+ *     });
+ *     ```
+ *
+ *     This event SHOULD be emitted once the stream detects a fatal error, such
+ *     as a fatal transmission error.
+ *     It SHOULD NOT be emitted after a previous `error` or `close` event.
+ *     It MUST NOT be emitted if this is not a fatal error condition, such as
+ *     a temporary network issue that did not cause any data to be lost.
+ *
+ *     After the stream errors, it MUST close the stream and SHOULD thus be
+ *     followed by a `close` event and then switch to non-writable mode, see
+ *     also `close()` and `isWritable()`.
+ *
+ *     Many common streams (such as a TCP/IP connection or a file-based stream)
+ *     only deal with data transmission and may choose
+ *     to only emit this for a fatal transmission error once and will then
+ *     close (terminate) the stream in response.
+ *
+ *     If this stream is a `DuplexStreamInterface`, you should also notice
+ *     how the readable side of the stream also implements an `error` event.
+ *     In other words, an error may occur while either reading or writing the
+ *     stream which should result in the same error processing.
+ *
+ * close event:
+ *     The `close` event will be emitted once the stream closes (terminates).
+ *
+ *     ```php
+ *     $stream->on('close', function () {
+ *         echo 'CLOSED';
+ *     });
+ *     ```
+ *
+ *     This event SHOULD be emitted once or never at all, depending on whether
+ *     the stream ever terminates.
+ *     It SHOULD NOT be emitted after a previous `close` event.
+ *
+ *     After the stream is closed, it MUST switch to non-writable mode,
+ *     see also `isWritable()`.
+ *
+ *     This event SHOULD be emitted whenever the stream closes, irrespective of
+ *     whether this happens implicitly due to an unrecoverable error or
+ *     explicitly when either side closes the stream.
+ *
+ *     Many common streams (such as a TCP/IP connection or a file-based stream)
+ *     will likely choose to emit this event after flushing the buffer from
+ *     the `end()` method, after receiving a *successful* `end` event or after
+ *     a fatal transmission `error` event.
+ *
+ *     If this stream is a `DuplexStreamInterface`, you should also notice
+ *     how the readable side of the stream also implements a `close` event.
+ *     In other words, after receiving this event, the stream MUST switch into
+ *     non-writable AND non-readable mode, see also `isReadable()`.
+ *     Note that this event should not be confused with the `end` event.
+ *
+ * The event callback functions MUST be a valid `callable` that obeys strict
+ * parameter definitions and MUST accept event parameters exactly as documented.
+ * The event callback functions MUST NOT throw an `Exception`.
+ * The return value of the event callback functions will be ignored and has no
+ * effect, so for performance reasons you're recommended to not return any
+ * excessive data structures.
+ *
+ * Every implementation of this interface MUST follow these event semantics in
+ * order to be considered a well-behaving stream.
+ *
+ * > Note that higher-level implementations of this interface may choose to
+ *   define additional events with dedicated semantics not defined as part of
+ *   this low-level stream specification. Conformance with these event semantics
+ *   is out of scope for this interface, so you may also have to refer to the
+ *   documentation of such a higher-level implementation.
+ *
+ * @see EventEmitterInterface
+ * @see DuplexStreamInterface
+ */
+interface WritableStreamInterface extends EventEmitterInterface
+{
+    /**
+     * Checks whether this stream is in a writable state (not closed already).
+     *
+     * This method can be used to check if the stream still accepts writing
+     * any data or if it is ended or closed already.
+     * Writing any data to a non-writable stream is a NO-OP:
+     *
+     * ```php
+     * assert($stream->isWritable() === false);
+     *
+     * $stream->write('end'); // NO-OP
+     * $stream->end('end'); // NO-OP
+     * ```
+     *
+     * A successfully opened stream always MUST start in writable mode.
+     *
+     * Once the stream ends or closes, it MUST switch to non-writable mode.
+     * This can happen any time, explicitly through `end()` or `close()` or
+     * implicitly due to a remote close or an unrecoverable transmission error.
+     * Once a stream has switched to non-writable mode, it MUST NOT transition
+     * back to writable mode.
+     *
+     * If this stream is a `DuplexStreamInterface`, you should also notice
+     * how the readable side of the stream also implements an `isReadable()`
+     * method. Unless this is a half-open duplex stream, they SHOULD usually
+     * have the same return value.
+     *
+     * @return bool
+     */
+    public function isWritable();
+
+    /**
+     * Write some data into the stream.
+     *
+     * A successful write MUST be confirmed with a boolean `true`, which means
+     * that either the data was written (flushed) immediately or is buffered and
+     * scheduled for a future write. Note that this interface gives you no
+     * control over explicitly flushing the buffered data, as finding the
+     * appropriate time for this is beyond the scope of this interface and left
+     * up to the implementation of this interface.
+     *
+     * Many common streams (such as a TCP/IP connection or file-based stream)
+     * may choose to buffer all given data and schedule a future flush by using
+     * an underlying EventLoop to check when the resource is actually writable.
+     *
+     * If a stream cannot handle writing (or flushing) the data, it SHOULD emit
+     * an `error` event and MAY `close()` the stream if it can not recover from
+     * this error.
+     *
+     * If the internal buffer is full after adding `$data`, then `write()`
+     * SHOULD return `false`, indicating that the caller should stop sending
+     * data until the buffer drains.
+     * The stream SHOULD send a `drain` event once the buffer is ready to accept
+     * more data.
+     *
+     * Similarly, if the the stream is not writable (already in a closed state)
+     * it MUST NOT process the given `$data` and SHOULD return `false`,
+     * indicating that the caller should stop sending data.
+     *
+     * The given `$data` argument MAY be of mixed type, but it's usually
+     * recommended it SHOULD be a `string` value or MAY use a type that allows
+     * representation as a `string` for maximum compatibility.
+     *
+     * Many common streams (such as a TCP/IP connection or a file-based stream)
+     * will only accept the raw (binary) payload data that is transferred over
+     * the wire as chunks of `string` values.
+     *
+     * Due to the stream-based nature of this, the sender may send any number
+     * of chunks with varying sizes. There are no guarantees that these chunks
+     * will be received with the exact same framing the sender intended to send.
+     * In other words, many lower-level protocols (such as TCP/IP) transfer the
+     * data in chunks that may be anywhere between single-byte values to several
+     * dozens of kilobytes. You may want to apply a higher-level protocol to
+     * these low-level data chunks in order to achieve proper message framing.
+     *
+     * @param mixed|string $data
+     * @return bool
+     */
+    public function write($data);
+
+    /**
+     * Successfully ends the stream (after optionally sending some final data).
+     *
+     * This method can be used to successfully end the stream, i.e. close
+     * the stream after sending out all data that is currently buffered.
+     *
+     * ```php
+     * $stream->write('hello');
+     * $stream->write('world');
+     * $stream->end();
+     * ```
+     *
+     * If there's no data currently buffered and nothing to be flushed, then
+     * this method MAY `close()` the stream immediately.
+     *
+     * If there's still data in the buffer that needs to be flushed first, then
+     * this method SHOULD try to write out this data and only then `close()`
+     * the stream.
+     * Once the stream is closed, it SHOULD emit a `close` event.
+     *
+     * Note that this interface gives you no control over explicitly flushing
+     * the buffered data, as finding the appropriate time for this is beyond the
+     * scope of this interface and left up to the implementation of this
+     * interface.
+     *
+     * Many common streams (such as a TCP/IP connection or file-based stream)
+     * may choose to buffer all given data and schedule a future flush by using
+     * an underlying EventLoop to check when the resource is actually writable.
+     *
+     * You can optionally pass some final data that is written to the stream
+     * before ending the stream. If a non-`null` value is given as `$data`, then
+     * this method will behave just like calling `write($data)` before ending
+     * with no data.
+     *
+     * ```php
+     * // shorter version
+     * $stream->end('bye');
+     *
+     * // same as longer version
+     * $stream->write('bye');
+     * $stream->end();
+     * ```
+     *
+     * After calling this method, the stream MUST switch into a non-writable
+     * mode, see also `isWritable()`.
+     * This means that no further writes are possible, so any additional
+     * `write()` or `end()` calls have no effect.
+     *
+     * ```php
+     * $stream->end();
+     * assert($stream->isWritable() === false);
+     *
+     * $stream->write('nope'); // NO-OP
+     * $stream->end(); // NO-OP
+     * ```
+     *
+     * If this stream is a `DuplexStreamInterface`, calling this method SHOULD
+     * also end its readable side, unless the stream supports half-open mode.
+     * In other words, after calling this method, these streams SHOULD switch
+     * into non-writable AND non-readable mode, see also `isReadable()`.
+     * This implies that in this case, the stream SHOULD NOT emit any `data`
+     * or `end` events anymore.
+     * Streams MAY choose to use the `pause()` method logic for this, but
+     * special care may have to be taken to ensure a following call to the
+     * `resume()` method SHOULD NOT continue emitting readable events.
+     *
+     * Note that this method should not be confused with the `close()` method.
+     *
+     * @param mixed|string|null $data
+     * @return void
+     */
+    public function end($data = null);
+
+    /**
+     * Closes the stream (forcefully).
+     *
+     * This method can be used to forcefully close the stream, i.e. close
+     * the stream without waiting for any buffered data to be flushed.
+     * If there's still data in the buffer, this data SHOULD be discarded.
+     *
+     * ```php
+     * $stream->close();
+     * ```
+     *
+     * Once the stream is closed, it SHOULD emit a `close` event.
+     * Note that this event SHOULD NOT be emitted more than once, in particular
+     * if this method is called multiple times.
+     *
+     * After calling this method, the stream MUST switch into a non-writable
+     * mode, see also `isWritable()`.
+     * This means that no further writes are possible, so any additional
+     * `write()` or `end()` calls have no effect.
+     *
+     * ```php
+     * $stream->close();
+     * assert($stream->isWritable() === false);
+     *
+     * $stream->write('nope'); // NO-OP
+     * $stream->end(); // NO-OP
+     * ```
+     *
+     * Note that this method should not be confused with the `end()` method.
+     * Unlike the `end()` method, this method does not take care of any existing
+     * buffers and simply discards any buffer contents.
+     * Likewise, this method may also be called after calling `end()` on a
+     * stream in order to stop waiting for the stream to flush its final data.
+     *
+     * ```php
+     * $stream->end();
+     * $loop->addTimer(1.0, function () use ($stream) {
+     *     $stream->close();
+     * });
+     * ```
+     *
+     * If this stream is a `DuplexStreamInterface`, you should also notice
+     * how the readable side of the stream also implements a `close()` method.
+     * In other words, after calling this method, the stream MUST switch into
+     * non-writable AND non-readable mode, see also `isReadable()`.
+     *
+     * @return void
+     * @see ReadableStreamInterface::close()
+     */
+    public function close();
+}
diff --git a/assets/php/vendor/react/stream/tests/CallableStub.php b/assets/php/vendor/react/stream/tests/CallableStub.php
new file mode 100644
index 0000000..31cc834
--- /dev/null
+++ b/assets/php/vendor/react/stream/tests/CallableStub.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace React\Tests\Stream;
+
+class CallableStub
+{
+    public function __invoke()
+    {
+    }
+}
diff --git a/assets/php/vendor/react/stream/tests/CompositeStreamTest.php b/assets/php/vendor/react/stream/tests/CompositeStreamTest.php
new file mode 100644
index 0000000..df89c3e
--- /dev/null
+++ b/assets/php/vendor/react/stream/tests/CompositeStreamTest.php
@@ -0,0 +1,267 @@
+<?php
+
+namespace React\Tests\Stream;
+
+use React\Stream\CompositeStream;
+use React\Stream\ThroughStream;
+
+/**
+ * @covers React\Stream\CompositeStream
+ */
+class CompositeStreamTest extends TestCase
+{
+    /** @test */
+    public function itShouldCloseReadableIfNotWritable()
+    {
+        $readable = $this->getMockBuilder('React\Stream\ReadableStreamInterface')->getMock();
+        $readable
+            ->expects($this->once())
+            ->method('isReadable')
+            ->willReturn(true);
+        $readable
+            ->expects($this->once())
+            ->method('close');
+
+        $writable = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+        $writable
+            ->expects($this->once())
+            ->method('isWritable')
+            ->willReturn(false);
+
+        $composite = new CompositeStream($readable, $writable);
+
+        $composite->on('close', $this->expectCallableNever());
+        $composite->close();
+    }
+
+    /** @test */
+    public function itShouldCloseWritableIfNotReadable()
+    {
+        $readable = $this->getMockBuilder('React\Stream\ReadableStreamInterface')->getMock();
+        $readable
+            ->expects($this->once())
+            ->method('isReadable')
+            ->willReturn(false);
+
+        $writable = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+        $writable
+            ->expects($this->once())
+            ->method('close');
+
+        $composite = new CompositeStream($readable, $writable);
+
+        $composite->on('close', $this->expectCallableNever());
+        $composite->close();
+    }
+
+    /** @test */
+    public function itShouldForwardWritableCallsToWritableStream()
+    {
+        $readable = $this->getMockBuilder('React\Stream\ReadableStreamInterface')->getMock();
+        $readable
+            ->expects($this->once())
+            ->method('isReadable')
+            ->willReturn(true);
+
+        $writable = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+        $writable
+            ->expects($this->once())
+            ->method('write')
+            ->with('foo');
+        $writable
+            ->expects($this->exactly(2))
+            ->method('isWritable')
+            ->willReturn(true);
+
+        $composite = new CompositeStream($readable, $writable);
+        $composite->write('foo');
+        $composite->isWritable();
+    }
+
+    /** @test */
+    public function itShouldForwardReadableCallsToReadableStream()
+    {
+        $readable = $this->getMockBuilder('React\Stream\ReadableStreamInterface')->getMock();
+        $readable
+            ->expects($this->exactly(2))
+            ->method('isReadable')
+            ->willReturn(true);
+        $readable
+            ->expects($this->once())
+            ->method('pause');
+        $readable
+            ->expects($this->once())
+            ->method('resume');
+
+        $writable = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+        $writable
+            ->expects($this->any())
+            ->method('isWritable')
+            ->willReturn(true);
+
+        $composite = new CompositeStream($readable, $writable);
+        $composite->isReadable();
+        $composite->pause();
+        $composite->resume();
+    }
+
+    /** @test */
+    public function itShouldNotForwardResumeIfStreamIsNotWritable()
+    {
+        $readable = $this->getMockBuilder('React\Stream\ReadableStreamInterface')->getMock();
+        $readable
+            ->expects($this->once())
+            ->method('isReadable')
+            ->willReturn(true);
+        $readable
+            ->expects($this->never())
+            ->method('resume');
+
+        $writable = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+        $writable
+            ->expects($this->exactly(2))
+            ->method('isWritable')
+            ->willReturnOnConsecutiveCalls(true, false);
+
+        $composite = new CompositeStream($readable, $writable);
+        $composite->resume();
+    }
+
+    /** @test */
+    public function endShouldDelegateToWritableWithData()
+    {
+        $readable = $this->getMockBuilder('React\Stream\ReadableStreamInterface')->getMock();
+        $readable
+            ->expects($this->once())
+            ->method('isReadable')
+            ->willReturn(true);
+
+        $writable = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+        $writable
+            ->expects($this->once())
+            ->method('isWritable')
+            ->willReturn(true);
+        $writable
+            ->expects($this->once())
+            ->method('end')
+            ->with('foo');
+
+        $composite = new CompositeStream($readable, $writable);
+        $composite->end('foo');
+    }
+
+    /** @test */
+    public function closeShouldCloseBothStreams()
+    {
+        $readable = $this->getMockBuilder('React\Stream\ReadableStreamInterface')->getMock();
+        $readable
+            ->expects($this->once())
+            ->method('isReadable')
+            ->willReturn(true);
+        $readable
+            ->expects($this->once())
+            ->method('close');
+
+        $writable = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+        $writable
+            ->expects($this->once())
+            ->method('isWritable')
+            ->willReturn(true);
+        $writable
+            ->expects($this->once())
+            ->method('close');
+
+        $composite = new CompositeStream($readable, $writable);
+        $composite->close();
+    }
+
+    /** @test */
+    public function itShouldForwardCloseOnlyOnce()
+    {
+        $readable = new ThroughStream();
+        $writable = new ThroughStream();
+
+        $composite = new CompositeStream($readable, $writable);
+        $composite->on('close', $this->expectCallableOnce());
+
+        $readable->close();
+        $writable->close();
+    }
+
+    /** @test */
+    public function itShouldForwardCloseAndRemoveAllListeners()
+    {
+        $in = new ThroughStream();
+
+        $composite = new CompositeStream($in, $in);
+        $composite->on('close', $this->expectCallableOnce());
+
+        $this->assertTrue($composite->isReadable());
+        $this->assertTrue($composite->isWritable());
+        $this->assertCount(1, $composite->listeners('close'));
+
+        $composite->close();
+
+        $this->assertFalse($composite->isReadable());
+        $this->assertFalse($composite->isWritable());
+        $this->assertCount(0, $composite->listeners('close'));
+    }
+
+    /** @test */
+    public function itShouldReceiveForwardedEvents()
+    {
+        $readable = new ThroughStream();
+        $writable = new ThroughStream();
+
+        $composite = new CompositeStream($readable, $writable);
+        $composite->on('data', $this->expectCallableOnce());
+        $composite->on('drain', $this->expectCallableOnce());
+
+        $readable->emit('data', array('foo'));
+        $writable->emit('drain');
+    }
+
+    /** @test */
+    public function itShouldHandlePipingCorrectly()
+    {
+        $readable = $this->getMockBuilder('React\Stream\ReadableStreamInterface')->getMock();
+        $readable
+            ->expects($this->once())
+            ->method('isReadable')
+            ->willReturn(true);
+
+        $writable = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+        $writable->expects($this->any())->method('isWritable')->willReturn(True);
+        $writable
+            ->expects($this->once())
+            ->method('write')
+            ->with('foo');
+
+        $composite = new CompositeStream($readable, $writable);
+
+        $input = new ThroughStream();
+        $input->pipe($composite);
+        $input->emit('data', array('foo'));
+    }
+
+    /** @test */
+    public function itShouldForwardPipeCallsToReadableStream()
+    {
+        $readable = new ThroughStream();
+
+        $writable = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+        $writable->expects($this->any())->method('isWritable')->willReturn(True);
+
+        $composite = new CompositeStream($readable, $writable);
+
+        $output = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+        $output->expects($this->any())->method('isWritable')->willReturn(True);
+        $output
+            ->expects($this->once())
+            ->method('write')
+            ->with('foo');
+
+        $composite->pipe($output);
+        $readable->emit('data', array('foo'));
+    }
+}
diff --git a/assets/php/vendor/react/stream/tests/DuplexResourceStreamIntegrationTest.php b/assets/php/vendor/react/stream/tests/DuplexResourceStreamIntegrationTest.php
new file mode 100644
index 0000000..fb5f02a
--- /dev/null
+++ b/assets/php/vendor/react/stream/tests/DuplexResourceStreamIntegrationTest.php
@@ -0,0 +1,352 @@
+<?php
+
+namespace React\Tests\Stream;
+
+use React\Stream\DuplexResourceStream;
+use React\Stream\ReadableResourceStream;
+use React\EventLoop\ExtEventLoop;
+use React\EventLoop\ExtLibeventLoop;
+use React\EventLoop\ExtLibevLoop;
+use React\EventLoop\LoopInterface;
+use React\EventLoop\LibEventLoop;
+use React\EventLoop\LibEvLoop;
+use React\EventLoop\StreamSelectLoop;
+
+class DuplexResourceStreamIntegrationTest extends TestCase
+{
+    public function loopProvider()
+    {
+        return array(
+            array(
+                function() {
+                    return true;
+                },
+                function () {
+                    return new StreamSelectLoop();
+                }
+            ),
+            array(
+                function () {
+                    return function_exists('event_base_new');
+                },
+                function () {
+                    return class_exists('React\EventLoop\ExtLibeventLoop') ? new ExtLibeventLoop() : new LibEventLoop();
+                }
+            ),
+            array(
+                function () {
+                    return class_exists('libev\EventLoop');
+                },
+                function () {
+                    return class_exists('React\EventLoop\ExtLibevLoop') ? new ExtLibevLoop() : new LibEvLoop();
+                }
+            ),
+            array(
+                function () {
+                    return class_exists('EventBase') && class_exists('React\EventLoop\ExtEventLoop');
+                },
+                function () {
+                    return new ExtEventLoop();
+                }
+            )
+        );
+    }
+
+    /**
+     * @dataProvider loopProvider
+     */
+    public function testBufferReadsLargeChunks($condition, $loopFactory)
+    {
+        if (true !== $condition()) {
+            return $this->markTestSkipped('Loop implementation not available');
+        }
+
+        $loop = $loopFactory();
+
+        list($sockA, $sockB) = stream_socket_pair(STREAM_PF_UNIX, STREAM_SOCK_STREAM, 0);
+
+        $bufferSize = 4096;
+        $streamA = new DuplexResourceStream($sockA, $loop, $bufferSize);
+        $streamB = new DuplexResourceStream($sockB, $loop, $bufferSize);
+
+        $testString = str_repeat("*", $bufferSize + 1);
+
+        $buffer = "";
+        $streamB->on('data', function ($data) use (&$buffer) {
+            $buffer .= $data;
+        });
+
+        $streamA->write($testString);
+
+        $this->loopTick($loop);
+        $this->loopTick($loop);
+        $this->loopTick($loop);
+
+        $streamA->close();
+        $streamB->close();
+
+        $this->assertEquals($testString, $buffer);
+    }
+
+    /**
+     * @dataProvider loopProvider
+     */
+    public function testWriteLargeChunk($condition, $loopFactory)
+    {
+        if (true !== $condition()) {
+            return $this->markTestSkipped('Loop implementation not available');
+        }
+
+        $loop = $loopFactory();
+
+        list($sockA, $sockB) = stream_socket_pair(STREAM_PF_UNIX, STREAM_SOCK_STREAM, 0);
+
+        $streamA = new DuplexResourceStream($sockA, $loop);
+        $streamB = new DuplexResourceStream($sockB, $loop);
+
+        // limit seems to be 192 KiB
+        $size = 256 * 1024;
+
+        // sending side sends and expects clean close with no errors
+        $streamA->end(str_repeat('*', $size));
+        $streamA->on('close', $this->expectCallableOnce());
+        $streamA->on('error', $this->expectCallableNever());
+
+        // receiving side counts bytes and expects clean close with no errors
+        $received = 0;
+        $streamB->on('data', function ($chunk) use (&$received) {
+            $received += strlen($chunk);
+        });
+        $streamB->on('close', $this->expectCallableOnce());
+        $streamB->on('error', $this->expectCallableNever());
+
+        $loop->run();
+
+        $streamA->close();
+        $streamB->close();
+
+        $this->assertEquals($size, $received);
+    }
+
+    /**
+     * @dataProvider loopProvider
+     */
+    public function testDoesNotEmitDataIfNothingHasBeenWritten($condition, $loopFactory)
+    {
+        if (true !== $condition()) {
+            return $this->markTestSkipped('Loop implementation not available');
+        }
+
+        $loop = $loopFactory();
+
+        list($sockA, $sockB) = stream_socket_pair(STREAM_PF_UNIX, STREAM_SOCK_STREAM, 0);
+
+        $streamA = new DuplexResourceStream($sockA, $loop);
+        $streamB = new DuplexResourceStream($sockB, $loop);
+
+        // end streamA without writing any data
+        $streamA->end();
+
+        // streamB should not emit any data
+        $streamB->on('data', $this->expectCallableNever());
+
+        $loop->run();
+
+        $streamA->close();
+        $streamB->close();
+    }
+
+    /**
+     * @dataProvider loopProvider
+     */
+    public function testDoesNotWriteDataIfRemoteSideFromPairHasBeenClosed($condition, $loopFactory)
+    {
+        if (true !== $condition()) {
+            return $this->markTestSkipped('Loop implementation not available');
+        }
+
+        $loop = $loopFactory();
+
+        list($sockA, $sockB) = stream_socket_pair(STREAM_PF_UNIX, STREAM_SOCK_STREAM, 0);
+
+        $streamA = new DuplexResourceStream($sockA, $loop);
+        $streamB = new DuplexResourceStream($sockB, $loop);
+
+        // end streamA without writing any data
+        $streamA->pause();
+        $streamA->write('hello');
+        $streamA->on('close', $this->expectCallableOnce());
+
+        $streamB->on('data', $this->expectCallableNever());
+        $streamB->close();
+
+        $loop->run();
+
+        $streamA->close();
+        $streamB->close();
+    }
+
+    /**
+     * @dataProvider loopProvider
+     */
+    public function testDoesNotWriteDataIfServerSideHasBeenClosed($condition, $loopFactory)
+    {
+        if (true !== $condition()) {
+            return $this->markTestSkipped('Loop implementation not available');
+        }
+
+        $loop = $loopFactory();
+
+        $server = stream_socket_server('tcp://127.0.0.1:0');
+
+        $client = stream_socket_client(stream_socket_get_name($server, false));
+        $peer = stream_socket_accept($server);
+
+        $streamA = new DuplexResourceStream($client, $loop);
+        $streamB = new DuplexResourceStream($peer, $loop);
+
+        // end streamA without writing any data
+        $streamA->pause();
+        $streamA->write('hello');
+        $streamA->on('close', $this->expectCallableOnce());
+
+        $streamB->on('data', $this->expectCallableNever());
+        $streamB->close();
+
+        $loop->run();
+
+        $streamA->close();
+        $streamB->close();
+    }
+
+    /**
+     * @dataProvider loopProvider
+     */
+    public function testDoesNotWriteDataIfClientSideHasBeenClosed($condition, $loopFactory)
+    {
+        if (true !== $condition()) {
+            return $this->markTestSkipped('Loop implementation not available');
+        }
+
+        $loop = $loopFactory();
+
+        $server = stream_socket_server('tcp://127.0.0.1:0');
+
+        $client = stream_socket_client(stream_socket_get_name($server, false));
+        $peer = stream_socket_accept($server);
+
+        $streamA = new DuplexResourceStream($peer, $loop);
+        $streamB = new DuplexResourceStream($client, $loop);
+
+        // end streamA without writing any data
+        $streamA->pause();
+        $streamA->write('hello');
+        $streamA->on('close', $this->expectCallableOnce());
+
+        $streamB->on('data', $this->expectCallableNever());
+        $streamB->close();
+
+        $loop->run();
+
+        $streamA->close();
+        $streamB->close();
+    }
+
+    /**
+     * @dataProvider loopProvider
+     */
+    public function testReadsSingleChunkFromProcessPipe($condition, $loopFactory)
+    {
+        if (true !== $condition()) {
+            return $this->markTestSkipped('Loop implementation not available');
+        }
+
+        $loop = $loopFactory();
+
+        $stream = new ReadableResourceStream(popen('echo test', 'r'), $loop);
+        $stream->on('data', $this->expectCallableOnceWith("test\n"));
+        $stream->on('end', $this->expectCallableOnce());
+        $stream->on('error', $this->expectCallableNever());
+
+        $loop->run();
+    }
+
+    /**
+     * @dataProvider loopProvider
+     */
+    public function testReadsMultipleChunksFromProcessPipe($condition, $loopFactory)
+    {
+        if (true !== $condition()) {
+            return $this->markTestSkipped('Loop implementation not available');
+        }
+
+        $loop = $loopFactory();
+
+        $stream = new ReadableResourceStream(popen('echo a;sleep 0.1;echo b;sleep 0.1;echo c', 'r'), $loop);
+
+        $buffer = '';
+        $stream->on('data', function ($chunk) use (&$buffer) {
+            $buffer .= $chunk;
+        });
+
+        $stream->on('end', $this->expectCallableOnce());
+        $stream->on('error', $this->expectCallableNever());
+
+        $loop->run();
+
+        $this->assertEquals("a\n" . "b\n" . "c\n", $buffer);
+    }
+
+    /**
+     * @dataProvider loopProvider
+     */
+    public function testReadsLongChunksFromProcessPipe($condition, $loopFactory)
+    {
+        if (true !== $condition()) {
+            return $this->markTestSkipped('Loop implementation not available');
+        }
+
+        $loop = $loopFactory();
+
+        $stream = new ReadableResourceStream(popen('dd if=/dev/zero bs=12345 count=1234 2>&-', 'r'), $loop);
+
+        $bytes = 0;
+        $stream->on('data', function ($chunk) use (&$bytes) {
+            $bytes += strlen($chunk);
+        });
+
+        $stream->on('end', $this->expectCallableOnce());
+        $stream->on('error', $this->expectCallableNever());
+
+        $loop->run();
+
+        $this->assertEquals(12345 * 1234, $bytes);
+    }
+
+    /**
+     * @dataProvider loopProvider
+     */
+    public function testReadsNothingFromProcessPipeWithNoOutput($condition, $loopFactory)
+    {
+        if (true !== $condition()) {
+            return $this->markTestSkipped('Loop implementation not available');
+        }
+
+        $loop = $loopFactory();
+
+        $stream = new ReadableResourceStream(popen('true', 'r'), $loop);
+        $stream->on('data', $this->expectCallableNever());
+        $stream->on('end', $this->expectCallableOnce());
+        $stream->on('error', $this->expectCallableNever());
+
+        $loop->run();
+    }
+
+    private function loopTick(LoopInterface $loop)
+    {
+        $loop->addTimer(0, function () use ($loop) {
+            $loop->stop();
+        });
+        $loop->run();
+    }
+}
diff --git a/assets/php/vendor/react/stream/tests/DuplexResourceStreamTest.php b/assets/php/vendor/react/stream/tests/DuplexResourceStreamTest.php
new file mode 100644
index 0000000..3212ae8
--- /dev/null
+++ b/assets/php/vendor/react/stream/tests/DuplexResourceStreamTest.php
@@ -0,0 +1,495 @@
+<?php
+
+namespace React\Tests\Stream;
+
+use React\Stream\DuplexResourceStream;
+use Clue\StreamFilter as Filter;
+use React\Stream\WritableResourceStream;
+
+class DuplexResourceStreamTest extends TestCase
+{
+    /**
+     * @covers React\Stream\DuplexResourceStream::__construct
+     * @doesNotPerformAssertions
+     */
+    public function testConstructor()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        new DuplexResourceStream($stream, $loop);
+    }
+
+    /**
+     * @covers React\Stream\DuplexResourceStream::__construct
+     * @doesNotPerformAssertions
+     */
+    public function testConstructorWithExcessiveMode()
+    {
+        // excessive flags are ignored for temp streams, so we have to use a file stream
+        $name = tempnam(sys_get_temp_dir(), 'test');
+        $stream = @fopen($name, 'r+eANYTHING');
+        unlink($name);
+
+        $loop = $this->createLoopMock();
+        $buffer = new DuplexResourceStream($stream, $loop);
+        $buffer->close();
+    }
+
+    /**
+     * @covers React\Stream\DuplexResourceStream::__construct
+     * @expectedException InvalidArgumentException
+     */
+    public function testConstructorThrowsExceptionOnInvalidStream()
+    {
+        $loop = $this->createLoopMock();
+
+        new DuplexResourceStream('breakme', $loop);
+    }
+
+    /**
+     * @covers React\Stream\DuplexResourceStream::__construct
+     * @expectedException InvalidArgumentException
+     */
+    public function testConstructorThrowsExceptionOnWriteOnlyStream()
+    {
+        if (defined('HHVM_VERSION')) {
+            $this->markTestSkipped('HHVM does not report fopen mode for STDOUT');
+        }
+
+        $loop = $this->createLoopMock();
+
+        new DuplexResourceStream(STDOUT, $loop);
+    }
+
+    /**
+     * @covers React\Stream\DuplexResourceStream::__construct
+     * @expectedException InvalidArgumentException
+     */
+    public function testConstructorThrowsExceptionOnWriteOnlyStreamWithExcessiveMode()
+    {
+        // excessive flags are ignored for temp streams, so we have to use a file stream
+        $name = tempnam(sys_get_temp_dir(), 'test');
+        $stream = fopen($name, 'weANYTHING');
+        unlink($name);
+
+        $loop = $this->createLoopMock();
+        new DuplexResourceStream($stream, $loop);
+    }
+
+    /**
+     * @covers React\Stream\DuplexResourceStream::__construct
+     * @expectedException RunTimeException
+     */
+    public function testConstructorThrowsExceptionIfStreamDoesNotSupportNonBlocking()
+    {
+        if (!in_array('blocking', stream_get_wrappers())) {
+            stream_wrapper_register('blocking', 'React\Tests\Stream\EnforceBlockingWrapper');
+        }
+
+        $stream = fopen('blocking://test', 'r+');
+        $loop = $this->createLoopMock();
+
+        new DuplexResourceStream($stream, $loop);
+    }
+
+    /**
+     * @covers React\Stream\DuplexResourceStream::__construct
+     * @doesNotPerformAssertions
+     */
+    public function testConstructorAcceptsBuffer()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $buffer = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+
+        $conn = new DuplexResourceStream($stream, $loop, null, $buffer);
+    }
+
+    public function testCloseShouldEmitCloseEvent()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $conn = new DuplexResourceStream($stream, $loop);
+        $conn->on('close', $this->expectCallableOnce());
+        $conn->on('end', $this->expectCallableNever());
+
+        $conn->close();
+
+        $this->assertFalse($conn->isReadable());
+    }
+
+    public function testEndShouldEndBuffer()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $buffer = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+        $buffer->expects($this->once())->method('end')->with('foo');
+
+        $conn = new DuplexResourceStream($stream, $loop, null, $buffer);
+        $conn->end('foo');
+    }
+
+
+    public function testEndAfterCloseIsNoOp()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $buffer = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+        $buffer->expects($this->never())->method('end');
+
+        $conn = new DuplexResourceStream($stream, $loop);
+        $conn->close();
+        $conn->end();
+    }
+
+    /**
+     * @covers React\Stream\DuplexResourceStream::__construct
+     * @covers React\Stream\DuplexResourceStream::handleData
+     */
+    public function testDataEvent()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $capturedData = null;
+
+        $conn = new DuplexResourceStream($stream, $loop);
+        $conn->on('data', function ($data) use (&$capturedData) {
+            $capturedData = $data;
+        });
+
+        fwrite($stream, "foobar\n");
+        rewind($stream);
+
+        $conn->handleData($stream);
+        $this->assertSame("foobar\n", $capturedData);
+    }
+
+    /**
+     * @covers React\Stream\DuplexResourceStream::__construct
+     * @covers React\Stream\DuplexResourceStream::handleData
+     */
+    public function testDataEventDoesEmitOneChunkMatchingBufferSize()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $capturedData = null;
+
+        $conn = new DuplexResourceStream($stream, $loop, 4321);
+        $conn->on('data', function ($data) use (&$capturedData) {
+            $capturedData = $data;
+        });
+
+        fwrite($stream, str_repeat("a", 100000));
+        rewind($stream);
+
+        $conn->handleData($stream);
+
+        $this->assertTrue($conn->isReadable());
+        $this->assertEquals(4321, strlen($capturedData));
+    }
+
+    /**
+     * @covers React\Stream\DuplexResourceStream::__construct
+     * @covers React\Stream\DuplexResourceStream::handleData
+     */
+    public function testDataEventDoesEmitOneChunkUntilStreamEndsWhenBufferSizeIsInfinite()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $capturedData = null;
+
+        $conn = new DuplexResourceStream($stream, $loop, -1);
+
+        $conn->on('data', function ($data) use (&$capturedData) {
+            $capturedData = $data;
+        });
+
+        fwrite($stream, str_repeat("a", 100000));
+        rewind($stream);
+
+        $conn->handleData($stream);
+
+        $this->assertTrue($conn->isReadable());
+        $this->assertEquals(100000, strlen($capturedData));
+    }
+
+    /**
+     * @covers React\Stream\DuplexResourceStream::handleData
+     */
+    public function testEmptyStreamShouldNotEmitData()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $conn = new DuplexResourceStream($stream, $loop);
+        $conn->on('data', $this->expectCallableNever());
+
+        $conn->handleData($stream);
+    }
+
+    /**
+     * @covers React\Stream\DuplexResourceStream::write
+     */
+    public function testWrite()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createWriteableLoopMock();
+
+        $conn = new DuplexResourceStream($stream, $loop);
+        $conn->write("foo\n");
+
+        rewind($stream);
+        $this->assertSame("foo\n", fgets($stream));
+    }
+
+    /**
+     * @covers React\Stream\DuplexResourceStream::end
+     * @covers React\Stream\DuplexResourceStream::isReadable
+     * @covers React\Stream\DuplexResourceStream::isWritable
+     */
+    public function testEnd()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $conn = new DuplexResourceStream($stream, $loop);
+        $conn->end();
+
+        $this->assertFalse(is_resource($stream));
+        $this->assertFalse($conn->isReadable());
+        $this->assertFalse($conn->isWritable());
+    }
+
+    /**
+     * @covers React\Stream\DuplexResourceStream::end
+     */
+    public function testEndRemovesReadStreamFromLoop()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+        $loop->expects($this->once())->method('addReadStream')->with($stream);
+        $loop->expects($this->once())->method('removeReadStream')->with($stream);
+
+        $conn = new DuplexResourceStream($stream, $loop);
+        $conn->end('bye');
+    }
+
+    /**
+     * @covers React\Stream\DuplexResourceStream::pause
+     */
+    public function testPauseRemovesReadStreamFromLoop()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+        $loop->expects($this->once())->method('addReadStream')->with($stream);
+        $loop->expects($this->once())->method('removeReadStream')->with($stream);
+
+        $conn = new DuplexResourceStream($stream, $loop);
+        $conn->pause();
+        $conn->pause();
+    }
+
+    /**
+     * @covers React\Stream\DuplexResourceStream::pause
+     */
+    public function testResumeDoesAddStreamToLoopOnlyOnce()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+        $loop->expects($this->once())->method('addReadStream')->with($stream);
+
+        $conn = new DuplexResourceStream($stream, $loop);
+        $conn->resume();
+        $conn->resume();
+    }
+
+    /**
+     * @covers React\Stream\DuplexResourceStream::close
+     */
+    public function testCloseRemovesReadStreamFromLoop()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+        $loop->expects($this->once())->method('addReadStream')->with($stream);
+        $loop->expects($this->once())->method('removeReadStream')->with($stream);
+
+        $conn = new DuplexResourceStream($stream, $loop);
+        $conn->close();
+    }
+
+    /**
+     * @covers React\Stream\DuplexResourceStream::close
+     */
+    public function testCloseAfterPauseRemovesReadStreamFromLoopOnlyOnce()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+        $loop->expects($this->once())->method('addReadStream')->with($stream);
+        $loop->expects($this->once())->method('removeReadStream')->with($stream);
+
+        $conn = new DuplexResourceStream($stream, $loop);
+        $conn->pause();
+        $conn->close();
+    }
+
+    /**
+     * @covers React\Stream\DuplexResourceStream::close
+     */
+    public function testResumeAfterCloseDoesAddReadStreamToLoopOnlyOnce()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+        $loop->expects($this->once())->method('addReadStream')->with($stream);
+
+        $conn = new DuplexResourceStream($stream, $loop);
+        $conn->close();
+        $conn->resume();
+    }
+
+    public function testEndedStreamsShouldNotWrite()
+    {
+        $file = tempnam(sys_get_temp_dir(), 'reactphptest_');
+        $stream = fopen($file, 'r+');
+        $loop = $this->createWriteableLoopMock();
+
+        $conn = new DuplexResourceStream($stream, $loop);
+        $conn->write("foo\n");
+        $conn->end();
+
+        $res = $conn->write("bar\n");
+        $stream = fopen($file, 'r');
+
+        $this->assertSame("foo\n", fgets($stream));
+        $this->assertFalse($res);
+
+        unlink($file);
+    }
+
+    public function testPipeShouldReturnDestination()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $conn = new DuplexResourceStream($stream, $loop);
+        $dest = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+
+        $this->assertSame($dest, $conn->pipe($dest));
+    }
+
+    public function testBufferEventsShouldBubbleUp()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $buffer = new WritableResourceStream($stream, $loop);
+        $conn = new DuplexResourceStream($stream, $loop, null, $buffer);
+
+        $conn->on('drain', $this->expectCallableOnce());
+        $conn->on('error', $this->expectCallableOnce());
+
+        $buffer->emit('drain');
+        $buffer->emit('error', array(new \RuntimeException('Whoops')));
+    }
+
+    /**
+     * @covers React\Stream\DuplexResourceStream::handleData
+     */
+    public function testClosingStreamInDataEventShouldNotTriggerError()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $conn = new DuplexResourceStream($stream, $loop);
+        $conn->on('error', $this->expectCallableNever());
+        $conn->on('data', function ($data) use ($conn) {
+            $conn->close();
+        });
+
+        fwrite($stream, "foobar\n");
+        rewind($stream);
+
+        $conn->handleData($stream);
+    }
+
+    /**
+     * @covers React\Stream\DuplexResourceStream::handleData
+     */
+    public function testDataFiltered()
+    {
+        $stream = fopen('php://temp', 'r+');
+
+        // add a filter which removes every 'a' when reading
+        Filter\append($stream, function ($chunk) {
+            return str_replace('a', '', $chunk);
+        }, STREAM_FILTER_READ);
+
+        $loop = $this->createLoopMock();
+
+        $capturedData = null;
+
+        $conn = new DuplexResourceStream($stream, $loop);
+        $conn->on('data', function ($data) use (&$capturedData) {
+            $capturedData = $data;
+        });
+
+        fwrite($stream, "foobar\n");
+        rewind($stream);
+
+        $conn->handleData($stream);
+        $this->assertSame("foobr\n", $capturedData);
+    }
+
+    /**
+     * @covers React\Stream\DuplexResourceStream::handleData
+     */
+    public function testDataErrorShouldEmitErrorAndClose()
+    {
+        $stream = fopen('php://temp', 'r+');
+
+        // add a filter which returns an error when encountering an 'a' when reading
+        Filter\append($stream, function ($chunk) {
+            if (strpos($chunk, 'a') !== false) {
+                throw new \Exception('Invalid');
+            }
+            return $chunk;
+        }, STREAM_FILTER_READ);
+
+        $loop = $this->createLoopMock();
+
+        $conn = new DuplexResourceStream($stream, $loop);
+        $conn->on('data', $this->expectCallableNever());
+        $conn->on('error', $this->expectCallableOnce());
+        $conn->on('close', $this->expectCallableOnce());
+
+        fwrite($stream, "foobar\n");
+        rewind($stream);
+
+        $conn->handleData($stream);
+    }
+
+    private function createWriteableLoopMock()
+    {
+        $loop = $this->createLoopMock();
+        $loop
+            ->expects($this->once())
+            ->method('addWriteStream')
+            ->will($this->returnCallback(function ($stream, $listener) {
+                call_user_func($listener, $stream);
+            }));
+
+        return $loop;
+    }
+
+    private function createLoopMock()
+    {
+        return $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+    }
+}
diff --git a/assets/php/vendor/react/stream/tests/EnforceBlockingWrapper.php b/assets/php/vendor/react/stream/tests/EnforceBlockingWrapper.php
new file mode 100644
index 0000000..39c0487
--- /dev/null
+++ b/assets/php/vendor/react/stream/tests/EnforceBlockingWrapper.php
@@ -0,0 +1,35 @@
+<?php
+
+namespace React\Tests\Stream;
+
+/**
+ * Used to test dummy stream resources that do not support setting non-blocking mode
+ *
+ * @link http://php.net/manual/de/class.streamwrapper.php
+ */
+class EnforceBlockingWrapper
+{
+    public function stream_open($path, $mode, $options, &$opened_path)
+    {
+        return true;
+    }
+
+    public function stream_cast($cast_as)
+    {
+        return false;
+    }
+
+    public function stream_eof()
+    {
+        return false;
+    }
+
+    public function stream_set_option($option, $arg1, $arg2)
+    {
+        if ($option === STREAM_OPTION_BLOCKING) {
+            return false;
+        }
+
+        return true;
+    }
+}
diff --git a/assets/php/vendor/react/stream/tests/FunctionalInternetTest.php b/assets/php/vendor/react/stream/tests/FunctionalInternetTest.php
new file mode 100644
index 0000000..4d31e8e
--- /dev/null
+++ b/assets/php/vendor/react/stream/tests/FunctionalInternetTest.php
@@ -0,0 +1,122 @@
+<?php
+
+namespace React\Tests\Stream;
+
+use React\EventLoop\Factory;
+use React\EventLoop\LoopInterface;
+use React\Stream\DuplexResourceStream;
+use React\Stream\WritableResourceStream;
+
+/**
+ * @group internet
+ */
+class FunctionalInternetTest extends TestCase
+{
+    public function testUploadKilobytePlain()
+    {
+        $size = 1000;
+        $stream = stream_socket_client('tcp://httpbin.org:80');
+
+        $loop = Factory::create();
+        $stream = new DuplexResourceStream($stream, $loop);
+
+        $buffer = '';
+        $stream->on('data', function ($chunk) use (&$buffer) {
+            $buffer .= $chunk;
+        });
+
+        $stream->on('error', $this->expectCallableNever());
+
+        $stream->write("POST /post HTTP/1.0\r\nHost: httpbin.org\r\nContent-Length: $size\r\n\r\n" . str_repeat('.', $size));
+
+        $this->awaitStreamClose($stream, $loop);
+
+        $this->assertNotEquals('', $buffer);
+    }
+
+    public function testUploadBiggerBlockPlain()
+    {
+        $size = 50 * 1000;
+        $stream = stream_socket_client('tcp://httpbin.org:80');
+
+        $loop = Factory::create();
+        $stream = new DuplexResourceStream($stream, $loop);
+
+        $buffer = '';
+        $stream->on('data', function ($chunk) use (&$buffer) {
+            $buffer .= $chunk;
+        });
+
+        $stream->on('error', $this->expectCallableNever());
+
+        $stream->write("POST /post HTTP/1.0\r\nHost: httpbin.org\r\nContent-Length: $size\r\n\r\n" . str_repeat('.', $size));
+
+        $this->awaitStreamClose($stream, $loop);
+
+        $this->assertNotEquals('', $buffer);
+    }
+
+    public function testUploadKilobyteSecure()
+    {
+        $size = 1000;
+        $stream = stream_socket_client('tls://httpbin.org:443');
+
+        $loop = Factory::create();
+        $stream = new DuplexResourceStream($stream, $loop);
+
+        $buffer = '';
+        $stream->on('data', function ($chunk) use (&$buffer) {
+            $buffer .= $chunk;
+        });
+
+        $stream->on('error', $this->expectCallableNever());
+
+        $stream->write("POST /post HTTP/1.0\r\nHost: httpbin.org\r\nContent-Length: $size\r\n\r\n" . str_repeat('.', $size));
+
+        $this->awaitStreamClose($stream, $loop);
+
+        $this->assertNotEquals('', $buffer);
+    }
+
+    public function testUploadBiggerBlockSecureRequiresSmallerChunkSize()
+    {
+        $size = 50 * 1000;
+        $stream = stream_socket_client('tls://httpbin.org:443');
+
+        $loop = Factory::create();
+        $stream = new DuplexResourceStream(
+            $stream,
+            $loop,
+            null,
+            new WritableResourceStream($stream, $loop, null, 8192)
+        );
+
+        $buffer = '';
+        $stream->on('data', function ($chunk) use (&$buffer) {
+            $buffer .= $chunk;
+        });
+
+        $stream->on('error', $this->expectCallableNever());
+
+        $stream->write("POST /post HTTP/1.0\r\nHost: httpbin.org\r\nContent-Length: $size\r\n\r\n" . str_repeat('.', $size));
+
+        $this->awaitStreamClose($stream, $loop);
+
+        $this->assertNotEquals('', $buffer);
+    }
+
+    private function awaitStreamClose(DuplexResourceStream $stream, LoopInterface $loop, $timeout = 10.0)
+    {
+        $stream->on('close', function () use ($loop) {
+            $loop->stop();
+        });
+
+        $that = $this;
+        $loop->addTimer($timeout, function () use ($loop, $that) {
+            $loop->stop();
+            $that->fail('Timed out while waiting for stream to close');
+        });
+
+        $loop->run();
+    }
+}
diff --git a/assets/php/vendor/react/stream/tests/ReadableResourceStreamTest.php b/assets/php/vendor/react/stream/tests/ReadableResourceStreamTest.php
new file mode 100644
index 0000000..20da96f
--- /dev/null
+++ b/assets/php/vendor/react/stream/tests/ReadableResourceStreamTest.php
@@ -0,0 +1,372 @@
+<?php
+
+namespace React\Tests\Stream;
+
+use React\Stream\ReadableResourceStream;
+use Clue\StreamFilter as Filter;
+
+class ReadableResourceStreamTest extends TestCase
+{
+    /**
+     * @covers React\Stream\ReadableResourceStream::__construct
+     * @doesNotPerformAssertions
+     */
+    public function testConstructor()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        new ReadableResourceStream($stream, $loop);
+    }
+
+    /**
+     * @covers React\Stream\ReadableResourceStream::__construct
+     * @doesNotPerformAssertions
+     */
+    public function testConstructorWithExcessiveMode()
+    {
+        // excessive flags are ignored for temp streams, so we have to use a file stream
+        $name = tempnam(sys_get_temp_dir(), 'test');
+        $stream = @fopen($name, 'r+eANYTHING');
+        unlink($name);
+
+        $loop = $this->createLoopMock();
+        $buffer = new ReadableResourceStream($stream, $loop);
+        $buffer->close();
+    }
+
+    /**
+     * @covers React\Stream\ReadableResourceStream::__construct
+     * @expectedException InvalidArgumentException
+     */
+    public function testConstructorThrowsExceptionOnInvalidStream()
+    {
+        $loop = $this->createLoopMock();
+
+        new ReadableResourceStream(false, $loop);
+    }
+
+    /**
+     * @covers React\Stream\ReadableResourceStream::__construct
+     * @expectedException InvalidArgumentException
+     */
+    public function testConstructorThrowsExceptionOnWriteOnlyStream()
+    {
+        if (defined('HHVM_VERSION')) {
+            $this->markTestSkipped('HHVM does not report fopen mode for STDOUT');
+        }
+
+        $loop = $this->createLoopMock();
+
+        new ReadableResourceStream(STDOUT, $loop);
+    }
+
+    /**
+     * @covers React\Stream\ReadableResourceStream::__construct
+     * @expectedException InvalidArgumentException
+     */
+    public function testConstructorThrowsExceptionOnWriteOnlyStreamWithExcessiveMode()
+    {
+        // excessive flags are ignored for temp streams, so we have to use a file stream
+        $name = tempnam(sys_get_temp_dir(), 'test');
+        $stream = fopen($name, 'weANYTHING');
+        unlink($name);
+
+        $loop = $this->createLoopMock();
+        new ReadableResourceStream($stream, $loop);
+    }
+
+    /**
+     * @covers React\Stream\ReadableResourceStream::__construct
+     * @expectedException RuntimeException
+     */
+    public function testConstructorThrowsExceptionIfStreamDoesNotSupportNonBlocking()
+    {
+        if (!in_array('blocking', stream_get_wrappers())) {
+            stream_wrapper_register('blocking', 'React\Tests\Stream\EnforceBlockingWrapper');
+        }
+
+        $stream = fopen('blocking://test', 'r+');
+        $loop = $this->createLoopMock();
+
+        new ReadableResourceStream($stream, $loop);
+    }
+
+
+    public function testCloseShouldEmitCloseEvent()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $conn = new ReadableResourceStream($stream, $loop);
+        $conn->on('close', $this->expectCallableOnce());
+
+        $conn->close();
+
+        $this->assertFalse($conn->isReadable());
+    }
+
+    public function testCloseTwiceShouldEmitCloseEventOnce()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $conn = new ReadableResourceStream($stream, $loop);
+        $conn->on('close', $this->expectCallableOnce());
+
+        $conn->close();
+        $conn->close();
+    }
+
+    /**
+     * @covers React\Stream\ReadableResourceStream::__construct
+     * @covers React\Stream\ReadableResourceStream::handleData
+     */
+    public function testDataEvent()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $capturedData = null;
+
+        $conn = new ReadableResourceStream($stream, $loop);
+        $conn->on('data', function ($data) use (&$capturedData) {
+            $capturedData = $data;
+        });
+
+        fwrite($stream, "foobar\n");
+        rewind($stream);
+
+        $conn->handleData($stream);
+        $this->assertSame("foobar\n", $capturedData);
+    }
+
+    /**
+     * @covers React\Stream\ReadableResourceStream::__construct
+     * @covers React\Stream\ReadableResourceStream::handleData
+     */
+    public function testDataEventDoesEmitOneChunkMatchingBufferSize()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $capturedData = null;
+
+        $conn = new ReadableResourceStream($stream, $loop, 4321);
+        $conn->on('data', function ($data) use (&$capturedData) {
+            $capturedData = $data;
+        });
+
+        fwrite($stream, str_repeat("a", 100000));
+        rewind($stream);
+
+        $conn->handleData($stream);
+
+        $this->assertTrue($conn->isReadable());
+        $this->assertEquals(4321, strlen($capturedData));
+    }
+
+    /**
+     * @covers React\Stream\ReadableResourceStream::__construct
+     * @covers React\Stream\ReadableResourceStream::handleData
+     */
+    public function testDataEventDoesEmitOneChunkUntilStreamEndsWhenBufferSizeIsInfinite()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $capturedData = null;
+
+        $conn = new ReadableResourceStream($stream, $loop, -1);
+
+        $conn->on('data', function ($data) use (&$capturedData) {
+            $capturedData = $data;
+        });
+
+        fwrite($stream, str_repeat("a", 100000));
+        rewind($stream);
+
+        $conn->handleData($stream);
+
+        $this->assertTrue($conn->isReadable());
+        $this->assertEquals(100000, strlen($capturedData));
+    }
+
+    /**
+     * @covers React\Stream\ReadableResourceStream::handleData
+     */
+    public function testEmptyStreamShouldNotEmitData()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $conn = new ReadableResourceStream($stream, $loop);
+        $conn->on('data', $this->expectCallableNever());
+
+        $conn->handleData($stream);
+    }
+
+    public function testPipeShouldReturnDestination()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $conn = new ReadableResourceStream($stream, $loop);
+        $dest = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+
+        $this->assertSame($dest, $conn->pipe($dest));
+    }
+
+    /**
+     * @covers React\Stream\ReadableResourceStream::handleData
+     */
+    public function testClosingStreamInDataEventShouldNotTriggerError()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $conn = new ReadableResourceStream($stream, $loop);
+        $conn->on('error', $this->expectCallableNever());
+        $conn->on('data', function ($data) use ($conn) {
+            $conn->close();
+        });
+
+        fwrite($stream, "foobar\n");
+        rewind($stream);
+
+        $conn->handleData($stream);
+    }
+
+    /**
+     * @covers React\Stream\ReadableResourceStream::pause
+     */
+    public function testPauseRemovesReadStreamFromLoop()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+        $loop->expects($this->once())->method('addReadStream')->with($stream);
+        $loop->expects($this->once())->method('removeReadStream')->with($stream);
+
+        $conn = new ReadableResourceStream($stream, $loop);
+        $conn->pause();
+        $conn->pause();
+    }
+
+    /**
+     * @covers React\Stream\ReadableResourceStream::pause
+     */
+    public function testResumeDoesAddStreamToLoopOnlyOnce()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+        $loop->expects($this->once())->method('addReadStream')->with($stream);
+
+        $conn = new ReadableResourceStream($stream, $loop);
+        $conn->resume();
+        $conn->resume();
+    }
+
+    /**
+     * @covers React\Stream\ReadableResourceStream::close
+     */
+    public function testCloseRemovesReadStreamFromLoop()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+        $loop->expects($this->once())->method('addReadStream')->with($stream);
+        $loop->expects($this->once())->method('removeReadStream')->with($stream);
+
+        $conn = new ReadableResourceStream($stream, $loop);
+        $conn->close();
+    }
+
+    /**
+     * @covers React\Stream\ReadableResourceStream::close
+     */
+    public function testCloseAfterPauseRemovesReadStreamFromLoopOnce()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+        $loop->expects($this->once())->method('addReadStream')->with($stream);
+        $loop->expects($this->once())->method('removeReadStream')->with($stream);
+
+        $conn = new ReadableResourceStream($stream, $loop);
+        $conn->pause();
+        $conn->close();
+    }
+
+    /**
+     * @covers React\Stream\ReadableResourceStream::close
+     */
+    public function testResumeAfterCloseDoesAddReadStreamToLoopOnlyOnce()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+        $loop->expects($this->once())->method('addReadStream')->with($stream);
+
+        $conn = new ReadableResourceStream($stream, $loop);
+        $conn->close();
+        $conn->resume();
+    }
+
+    /**
+     * @covers React\Stream\ReadableResourceStream::handleData
+     */
+    public function testDataFiltered()
+    {
+        $stream = fopen('php://temp', 'r+');
+
+        // add a filter which removes every 'a' when reading
+        Filter\append($stream, function ($chunk) {
+            return str_replace('a', '', $chunk);
+        }, STREAM_FILTER_READ);
+
+        $loop = $this->createLoopMock();
+
+        $capturedData = null;
+
+        $conn = new ReadableResourceStream($stream, $loop);
+        $conn->on('data', function ($data) use (&$capturedData) {
+            $capturedData = $data;
+        });
+
+        fwrite($stream, "foobar\n");
+        rewind($stream);
+
+        $conn->handleData($stream);
+        $this->assertSame("foobr\n", $capturedData);
+    }
+
+    /**
+     * @covers React\Stream\ReadableResourceStream::handleData
+     */
+    public function testDataErrorShouldEmitErrorAndClose()
+    {
+        $stream = fopen('php://temp', 'r+');
+
+        // add a filter which returns an error when encountering an 'a' when reading
+        Filter\append($stream, function ($chunk) {
+            if (strpos($chunk, 'a') !== false) {
+                throw new \Exception('Invalid');
+            }
+            return $chunk;
+        }, STREAM_FILTER_READ);
+
+        $loop = $this->createLoopMock();
+
+        $conn = new ReadableResourceStream($stream, $loop);
+        $conn->on('data', $this->expectCallableNever());
+        $conn->on('error', $this->expectCallableOnce());
+        $conn->on('close', $this->expectCallableOnce());
+
+        fwrite($stream, "foobar\n");
+        rewind($stream);
+
+        $conn->handleData($stream);
+    }
+
+    private function createLoopMock()
+    {
+        return $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+    }
+}
diff --git a/assets/php/vendor/react/stream/tests/Stub/ReadableStreamStub.php b/assets/php/vendor/react/stream/tests/Stub/ReadableStreamStub.php
new file mode 100644
index 0000000..6984f24
--- /dev/null
+++ b/assets/php/vendor/react/stream/tests/Stub/ReadableStreamStub.php
@@ -0,0 +1,61 @@
+<?php
+
+namespace React\Tests\Stream\Stub;
+
+use Evenement\EventEmitter;
+use React\Stream\ReadableStreamInterface;
+use React\Stream\WritableStreamInterface;
+use React\Stream\Util;
+
+class ReadableStreamStub extends EventEmitter implements ReadableStreamInterface
+{
+    public $readable = true;
+    public $paused = false;
+
+    public function isReadable()
+    {
+        return true;
+    }
+
+    // trigger data event
+    public function write($data)
+    {
+        $this->emit('data', array($data));
+    }
+
+    // trigger error event
+    public function error($error)
+    {
+        $this->emit('error', array($error));
+    }
+
+    // trigger end event
+    public function end()
+    {
+        $this->emit('end', array());
+    }
+
+    public function pause()
+    {
+        $this->paused = true;
+    }
+
+    public function resume()
+    {
+        $this->paused = false;
+    }
+
+    public function close()
+    {
+        $this->readable = false;
+
+        $this->emit('close');
+    }
+
+    public function pipe(WritableStreamInterface $dest, array $options = array())
+    {
+        Util::pipe($this, $dest, $options);
+
+        return $dest;
+    }
+}
diff --git a/assets/php/vendor/react/stream/tests/TestCase.php b/assets/php/vendor/react/stream/tests/TestCase.php
new file mode 100644
index 0000000..c8fc1db
--- /dev/null
+++ b/assets/php/vendor/react/stream/tests/TestCase.php
@@ -0,0 +1,54 @@
+<?php
+
+namespace React\Tests\Stream;
+
+use PHPUnit\Framework\TestCase as BaseTestCase;
+
+class TestCase extends BaseTestCase
+{
+    protected function expectCallableExactly($amount)
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->exactly($amount))
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    protected function expectCallableOnce()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->once())
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    protected function expectCallableOnceWith($value)
+    {
+        $callback = $this->createCallableMock();
+        $callback
+            ->expects($this->once())
+            ->method('__invoke')
+            ->with($value);
+
+        return $callback;
+    }
+
+    protected function expectCallableNever()
+    {
+        $mock = $this->createCallableMock();
+        $mock
+            ->expects($this->never())
+            ->method('__invoke');
+
+        return $mock;
+    }
+
+    protected function createCallableMock()
+    {
+        return $this->getMockBuilder('React\Tests\Stream\CallableStub')->getMock();
+    }
+}
diff --git a/assets/php/vendor/react/stream/tests/ThroughStreamTest.php b/assets/php/vendor/react/stream/tests/ThroughStreamTest.php
new file mode 100644
index 0000000..a98badf
--- /dev/null
+++ b/assets/php/vendor/react/stream/tests/ThroughStreamTest.php
@@ -0,0 +1,267 @@
+<?php
+
+namespace React\Tests\Stream;
+
+use React\Stream\ThroughStream;
+
+/**
+ * @covers React\Stream\ThroughStream
+ */
+class ThroughStreamTest extends TestCase
+{
+    /**
+     * @test
+     * @expectedException InvalidArgumentException
+     */
+    public function itShouldRejectInvalidCallback()
+    {
+        new ThroughStream(123);
+    }
+
+    /** @test */
+    public function itShouldReturnTrueForAnyDataWrittenToIt()
+    {
+        $through = new ThroughStream();
+        $ret = $through->write('foo');
+
+        $this->assertTrue($ret);
+    }
+
+    /** @test */
+    public function itShouldEmitAnyDataWrittenToIt()
+    {
+        $through = new ThroughStream();
+        $through->on('data', $this->expectCallableOnceWith('foo'));
+        $through->write('foo');
+    }
+
+    /** @test */
+    public function itShouldEmitAnyDataWrittenToItPassedThruFunction()
+    {
+        $through = new ThroughStream('strtoupper');
+        $through->on('data', $this->expectCallableOnceWith('FOO'));
+        $through->write('foo');
+    }
+
+    /** @test */
+    public function itShouldEmitAnyDataWrittenToItPassedThruCallback()
+    {
+        $through = new ThroughStream('strtoupper');
+        $through->on('data', $this->expectCallableOnceWith('FOO'));
+        $through->write('foo');
+    }
+
+    /** @test */
+    public function itShouldEmitErrorAndCloseIfCallbackThrowsException()
+    {
+        $through = new ThroughStream(function () {
+            throw new \RuntimeException();
+        });
+        $through->on('error', $this->expectCallableOnce());
+        $through->on('close', $this->expectCallableOnce());
+        $through->on('data', $this->expectCallableNever());
+        $through->on('end', $this->expectCallableNever());
+
+        $through->write('foo');
+
+        $this->assertFalse($through->isReadable());
+        $this->assertFalse($through->isWritable());
+    }
+
+    /** @test */
+    public function itShouldEmitErrorAndCloseIfCallbackThrowsExceptionOnEnd()
+    {
+        $through = new ThroughStream(function () {
+            throw new \RuntimeException();
+        });
+        $through->on('error', $this->expectCallableOnce());
+        $through->on('close', $this->expectCallableOnce());
+        $through->on('data', $this->expectCallableNever());
+        $through->on('end', $this->expectCallableNever());
+
+        $through->end('foo');
+
+        $this->assertFalse($through->isReadable());
+        $this->assertFalse($through->isWritable());
+    }
+
+    /** @test */
+    public function itShouldReturnFalseForAnyDataWrittenToItWhenPaused()
+    {
+        $through = new ThroughStream();
+        $through->pause();
+        $ret = $through->write('foo');
+
+        $this->assertFalse($ret);
+    }
+
+    /** @test */
+    public function itShouldEmitDrainOnResumeAfterReturnFalseForAnyDataWrittenToItWhenPaused()
+    {
+        $through = new ThroughStream();
+        $through->pause();
+        $through->write('foo');
+
+        $through->on('drain', $this->expectCallableOnce());
+        $through->resume();
+    }
+
+    /** @test */
+    public function itShouldReturnTrueForAnyDataWrittenToItWhenResumedAfterPause()
+    {
+        $through = new ThroughStream();
+        $through->on('drain', $this->expectCallableNever());
+        $through->pause();
+        $through->resume();
+        $ret = $through->write('foo');
+
+        $this->assertTrue($ret);
+    }
+
+    /** @test */
+    public function pipingStuffIntoItShouldWork()
+    {
+        $readable = new ThroughStream();
+
+        $through = new ThroughStream();
+        $through->on('data', $this->expectCallableOnceWith('foo'));
+
+        $readable->pipe($through);
+        $readable->emit('data', array('foo'));
+    }
+
+    /** @test */
+    public function endShouldEmitEndAndClose()
+    {
+        $through = new ThroughStream();
+        $through->on('data', $this->expectCallableNever());
+        $through->on('end', $this->expectCallableOnce());
+        $through->on('close', $this->expectCallableOnce());
+        $through->end();
+    }
+
+    /** @test */
+    public function endShouldCloseTheStream()
+    {
+        $through = new ThroughStream();
+        $through->on('data', $this->expectCallableNever());
+        $through->end();
+
+        $this->assertFalse($through->isReadable());
+        $this->assertFalse($through->isWritable());
+    }
+
+    /** @test */
+    public function endShouldWriteDataBeforeClosing()
+    {
+        $through = new ThroughStream();
+        $through->on('data', $this->expectCallableOnceWith('foo'));
+        $through->end('foo');
+
+        $this->assertFalse($through->isReadable());
+        $this->assertFalse($through->isWritable());
+    }
+
+    /** @test */
+    public function endTwiceShouldOnlyEmitOnce()
+    {
+        $through = new ThroughStream();
+        $through->on('data', $this->expectCallableOnce('first'));
+        $through->end('first');
+        $through->end('ignored');
+    }
+
+    /** @test */
+    public function writeAfterEndShouldReturnFalse()
+    {
+        $through = new ThroughStream();
+        $through->on('data', $this->expectCallableNever());
+        $through->end();
+
+        $this->assertFalse($through->write('foo'));
+    }
+
+    /** @test */
+    public function writeDataWillCloseStreamShouldReturnFalse()
+    {
+        $through = new ThroughStream();
+        $through->on('data', array($through, 'close'));
+
+        $this->assertFalse($through->write('foo'));
+    }
+
+    /** @test */
+    public function writeDataToPausedShouldReturnFalse()
+    {
+        $through = new ThroughStream();
+        $through->pause();
+
+        $this->assertFalse($through->write('foo'));
+    }
+
+    /** @test */
+    public function writeDataToResumedShouldReturnTrue()
+    {
+        $through = new ThroughStream();
+        $through->pause();
+        $through->resume();
+
+        $this->assertTrue($through->write('foo'));
+    }
+
+    /** @test */
+    public function itShouldBeReadableByDefault()
+    {
+        $through = new ThroughStream();
+        $this->assertTrue($through->isReadable());
+    }
+
+    /** @test */
+    public function itShouldBeWritableByDefault()
+    {
+        $through = new ThroughStream();
+        $this->assertTrue($through->isWritable());
+    }
+
+    /** @test */
+    public function closeShouldCloseOnce()
+    {
+        $through = new ThroughStream();
+
+        $through->on('close', $this->expectCallableOnce());
+
+        $through->close();
+
+        $this->assertFalse($through->isReadable());
+        $this->assertFalse($through->isWritable());
+    }
+
+    /** @test */
+    public function doubleCloseShouldCloseOnce()
+    {
+        $through = new ThroughStream();
+
+        $through->on('close', $this->expectCallableOnce());
+
+        $through->close();
+        $through->close();
+
+        $this->assertFalse($through->isReadable());
+        $this->assertFalse($through->isWritable());
+    }
+
+    /** @test */
+    public function pipeShouldPipeCorrectly()
+    {
+        $output = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+        $output->expects($this->any())->method('isWritable')->willReturn(True);
+        $output
+            ->expects($this->once())
+            ->method('write')
+            ->with('foo');
+
+        $through = new ThroughStream();
+        $through->pipe($output);
+        $through->write('foo');
+    }
+}
diff --git a/assets/php/vendor/react/stream/tests/UtilTest.php b/assets/php/vendor/react/stream/tests/UtilTest.php
new file mode 100644
index 0000000..3d113ab
--- /dev/null
+++ b/assets/php/vendor/react/stream/tests/UtilTest.php
@@ -0,0 +1,273 @@
+<?php
+
+namespace React\Tests\Stream;
+
+use React\Stream\WritableResourceStream;
+use React\Stream\Util;
+use React\Stream\CompositeStream;
+use React\Stream\ThroughStream;
+
+/**
+ * @covers React\Stream\Util
+ */
+class UtilTest extends TestCase
+{
+    public function testPipeReturnsDestinationStream()
+    {
+        $readable = $this->getMockBuilder('React\Stream\ReadableStreamInterface')->getMock();
+
+        $writable = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+
+        $ret = Util::pipe($readable, $writable);
+
+        $this->assertSame($writable, $ret);
+    }
+
+    public function testPipeNonReadableSourceShouldDoNothing()
+    {
+        $readable = $this->getMockBuilder('React\Stream\ReadableStreamInterface')->getMock();
+        $readable
+            ->expects($this->any())
+            ->method('isReadable')
+            ->willReturn(false);
+
+        $writable = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+        $writable
+            ->expects($this->never())
+            ->method('isWritable');
+        $writable
+            ->expects($this->never())
+            ->method('end');
+
+        Util::pipe($readable, $writable);
+    }
+
+    public function testPipeIntoNonWritableDestinationShouldPauseSource()
+    {
+        $readable = $this->getMockBuilder('React\Stream\ReadableStreamInterface')->getMock();
+        $readable
+            ->expects($this->any())
+            ->method('isReadable')
+            ->willReturn(true);
+        $readable
+            ->expects($this->once())
+            ->method('pause');
+
+        $writable = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+        $writable
+            ->expects($this->any())
+            ->method('isWritable')
+            ->willReturn(false);
+        $writable
+            ->expects($this->never())
+            ->method('end');
+
+        Util::pipe($readable, $writable);
+    }
+
+    public function testPipeClosingDestPausesSource()
+    {
+        $readable = $this->getMockBuilder('React\Stream\ReadableStreamInterface')->getMock();
+        $readable
+            ->expects($this->any())
+            ->method('isReadable')
+            ->willReturn(true);
+        $readable
+            ->expects($this->once())
+            ->method('pause');
+
+        $writable = new ThroughStream();
+
+        Util::pipe($readable, $writable);
+
+        $writable->close();
+    }
+
+    public function testPipeWithEnd()
+    {
+        $readable = new Stub\ReadableStreamStub();
+
+        $writable = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+        $writable
+            ->expects($this->any())
+            ->method('isWritable')
+            ->willReturn(true);
+        $writable
+            ->expects($this->once())
+            ->method('end');
+
+        Util::pipe($readable, $writable);
+
+        $readable->end();
+    }
+
+    public function testPipeWithoutEnd()
+    {
+        $readable = new Stub\ReadableStreamStub();
+
+        $writable = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+        $writable
+            ->expects($this->any())
+            ->method('isWritable')
+            ->willReturn(true);
+        $writable
+            ->expects($this->never())
+            ->method('end');
+
+        Util::pipe($readable, $writable, array('end' => false));
+
+        $readable->end();
+    }
+
+    public function testPipeWithTooSlowWritableShouldPauseReadable()
+    {
+        $readable = new Stub\ReadableStreamStub();
+
+        $writable = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+        $writable
+            ->expects($this->any())
+            ->method('isWritable')
+            ->willReturn(true);
+        $writable
+            ->expects($this->once())
+            ->method('write')
+            ->with('some data')
+            ->will($this->returnValue(false));
+
+        $readable->pipe($writable);
+
+        $this->assertFalse($readable->paused);
+        $readable->write('some data');
+        $this->assertTrue($readable->paused);
+    }
+
+    public function testPipeWithTooSlowWritableShouldResumeOnDrain()
+    {
+        $readable = new Stub\ReadableStreamStub();
+
+        $onDrain = null;
+
+        $writable = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+        $writable
+            ->expects($this->any())
+            ->method('isWritable')
+            ->willReturn(true);
+        $writable
+            ->expects($this->any())
+            ->method('on')
+            ->will($this->returnCallback(function ($name, $callback) use (&$onDrain) {
+                if ($name === 'drain') {
+                    $onDrain = $callback;
+                }
+            }));
+
+        $readable->pipe($writable);
+        $readable->pause();
+
+        $this->assertTrue($readable->paused);
+        $this->assertNotNull($onDrain);
+        $onDrain();
+        $this->assertFalse($readable->paused);
+    }
+
+    public function testPipeWithWritableResourceStream()
+    {
+        $readable = new Stub\ReadableStreamStub();
+
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+        $buffer = new WritableResourceStream($stream, $loop);
+
+        $readable->pipe($buffer);
+
+        $readable->write('hello, I am some ');
+        $readable->write('random data');
+
+        $buffer->handleWrite();
+        rewind($stream);
+        $this->assertSame('hello, I am some random data', stream_get_contents($stream));
+    }
+
+    public function testPipeSetsUpListeners()
+    {
+        $source = new ThroughStream();
+        $dest = new ThroughStream();
+
+        $this->assertCount(0, $source->listeners('data'));
+        $this->assertCount(0, $source->listeners('end'));
+        $this->assertCount(0, $dest->listeners('drain'));
+
+        Util::pipe($source, $dest);
+
+        $this->assertCount(1, $source->listeners('data'));
+        $this->assertCount(1, $source->listeners('end'));
+        $this->assertCount(1, $dest->listeners('drain'));
+    }
+
+    public function testPipeClosingSourceRemovesListeners()
+    {
+        $source = new ThroughStream();
+        $dest = new ThroughStream();
+
+        Util::pipe($source, $dest);
+
+        $source->close();
+
+        $this->assertCount(0, $source->listeners('data'));
+        $this->assertCount(0, $source->listeners('end'));
+        $this->assertCount(0, $dest->listeners('drain'));
+    }
+
+    public function testPipeClosingDestRemovesListeners()
+    {
+        $source = new ThroughStream();
+        $dest = new ThroughStream();
+
+        Util::pipe($source, $dest);
+
+        $dest->close();
+
+        $this->assertCount(0, $source->listeners('data'));
+        $this->assertCount(0, $source->listeners('end'));
+        $this->assertCount(0, $dest->listeners('drain'));
+    }
+
+    public function testPipeDuplexIntoSelfEndsOnEnd()
+    {
+        $readable = $this->getMockBuilder('React\Stream\ReadableStreamInterface')->getMock();
+        $readable->expects($this->any())->method('isReadable')->willReturn(true);
+        $writable = $this->getMockBuilder('React\Stream\WritableStreamInterface')->getMock();
+        $writable->expects($this->any())->method('isWritable')->willReturn(true);
+        $duplex = new CompositeStream($readable, $writable);
+
+        Util::pipe($duplex, $duplex);
+
+        $writable->expects($this->once())->method('end');
+
+        $duplex->emit('end');
+    }
+
+    /** @test */
+    public function forwardEventsShouldSetupForwards()
+    {
+        $source = new ThroughStream();
+        $target = new ThroughStream();
+
+        Util::forwardEvents($source, $target, array('data'));
+        $target->on('data', $this->expectCallableOnce());
+        $target->on('foo', $this->expectCallableNever());
+
+        $source->emit('data', array('hello'));
+        $source->emit('foo', array('bar'));
+    }
+
+    private function createLoopMock()
+    {
+        return $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+    }
+
+    private function notEqualTo($value)
+    {
+        return new \PHPUnit_Framework_Constraint_Not($value);
+    }
+}
diff --git a/assets/php/vendor/react/stream/tests/WritableStreamResourceTest.php b/assets/php/vendor/react/stream/tests/WritableStreamResourceTest.php
new file mode 100644
index 0000000..05bce9c
--- /dev/null
+++ b/assets/php/vendor/react/stream/tests/WritableStreamResourceTest.php
@@ -0,0 +1,534 @@
+<?php
+
+namespace React\Tests\Stream;
+
+use Clue\StreamFilter as Filter;
+use React\Stream\WritableResourceStream;
+
+class WritableResourceStreamTest extends TestCase
+{
+    /**
+     * @covers React\Stream\WritableResourceStream::__construct
+     * @doesNotPerformAssertions
+     */
+    public function testConstructor()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        new WritableResourceStream($stream, $loop);
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::__construct
+     * @doesNotPerformAssertions
+     */
+    public function testConstructorWithExcessiveMode()
+    {
+        // excessive flags are ignored for temp streams, so we have to use a file stream
+        $name = tempnam(sys_get_temp_dir(), 'test');
+        $stream = @fopen($name, 'w+eANYTHING');
+        unlink($name);
+
+        $loop = $this->createLoopMock();
+        $buffer = new WritableResourceStream($stream, $loop);
+        $buffer->close();
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::__construct
+     * @expectedException InvalidArgumentException
+     */
+    public function testConstructorThrowsIfNotAValidStreamResource()
+    {
+        $stream = null;
+        $loop = $this->createLoopMock();
+
+        new WritableResourceStream($stream, $loop);
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::__construct
+     * @expectedException InvalidArgumentException
+     */
+    public function testConstructorThrowsExceptionOnReadOnlyStream()
+    {
+        $stream = fopen('php://temp', 'r');
+        $loop = $this->createLoopMock();
+
+        new WritableResourceStream($stream, $loop);
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::__construct
+     * @expectedException InvalidArgumentException
+     */
+    public function testConstructorThrowsExceptionOnReadOnlyStreamWithExcessiveMode()
+    {
+        // excessive flags are ignored for temp streams, so we have to use a file stream
+        $name = tempnam(sys_get_temp_dir(), 'test');
+        $stream = fopen($name, 'reANYTHING');
+        unlink($name);
+
+        $loop = $this->createLoopMock();
+        new WritableResourceStream($stream, $loop);
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::__construct
+     * @expectedException RuntimeException
+     */
+    public function testConstructorThrowsExceptionIfStreamDoesNotSupportNonBlocking()
+    {
+        if (!in_array('blocking', stream_get_wrappers())) {
+            stream_wrapper_register('blocking', 'React\Tests\Stream\EnforceBlockingWrapper');
+        }
+
+        $stream = fopen('blocking://test', 'r+');
+        $loop = $this->createLoopMock();
+
+        new WritableResourceStream($stream, $loop);
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::write
+     * @covers React\Stream\WritableResourceStream::handleWrite
+     */
+    public function testWrite()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createWriteableLoopMock();
+
+        $buffer = new WritableResourceStream($stream, $loop);
+        $buffer->on('error', $this->expectCallableNever());
+
+        $buffer->write("foobar\n");
+        rewind($stream);
+        $this->assertSame("foobar\n", fread($stream, 1024));
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::write
+     */
+    public function testWriteWithDataDoesAddResourceToLoop()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+        $loop->expects($this->once())->method('addWriteStream')->with($this->equalTo($stream));
+
+        $buffer = new WritableResourceStream($stream, $loop);
+
+        $buffer->write("foobar\n");
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::write
+     * @covers React\Stream\WritableResourceStream::handleWrite
+     */
+    public function testEmptyWriteDoesNotAddToLoop()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+        $loop->expects($this->never())->method('addWriteStream');
+
+        $buffer = new WritableResourceStream($stream, $loop);
+
+        $buffer->write("");
+        $buffer->write(null);
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::write
+     * @covers React\Stream\WritableResourceStream::handleWrite
+     */
+    public function testWriteReturnsFalseWhenWritableResourceStreamIsFull()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createWriteableLoopMock();
+        $loop->preventWrites = true;
+
+        $buffer = new WritableResourceStream($stream, $loop, 4);
+        $buffer->on('error', $this->expectCallableNever());
+
+        $this->assertTrue($buffer->write("foo"));
+        $loop->preventWrites = false;
+        $this->assertFalse($buffer->write("bar\n"));
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::write
+     */
+    public function testWriteReturnsFalseWhenWritableResourceStreamIsExactlyFull()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $buffer = new WritableResourceStream($stream, $loop, 3);
+
+        $this->assertFalse($buffer->write("foo"));
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::write
+     * @covers React\Stream\WritableResourceStream::handleWrite
+     */
+    public function testWriteDetectsWhenOtherSideIsClosed()
+    {
+        list($a, $b) = stream_socket_pair(STREAM_PF_UNIX, STREAM_SOCK_STREAM, STREAM_IPPROTO_IP);
+
+        $loop = $this->createWriteableLoopMock();
+
+        $buffer = new WritableResourceStream($a, $loop, 4);
+        $buffer->on('error', $this->expectCallableOnce());
+
+        fclose($b);
+
+        $buffer->write("foo");
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::write
+     * @covers React\Stream\WritableResourceStream::handleWrite
+     */
+    public function testEmitsDrainAfterWriteWhichExceedsBuffer()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $buffer = new WritableResourceStream($stream, $loop, 2);
+        $buffer->on('error', $this->expectCallableNever());
+        $buffer->on('drain', $this->expectCallableOnce());
+
+        $buffer->write("foo");
+        $buffer->handleWrite();
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::write
+     * @covers React\Stream\WritableResourceStream::handleWrite
+     */
+    public function testWriteInDrain()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $buffer = new WritableResourceStream($stream, $loop, 2);
+        $buffer->on('error', $this->expectCallableNever());
+
+        $buffer->once('drain', function () use ($buffer) {
+            $buffer->write("bar\n");
+            $buffer->handleWrite();
+        });
+
+        $this->assertFalse($buffer->write("foo\n"));
+        $buffer->handleWrite();
+
+        fseek($stream, 0);
+        $this->assertSame("foo\nbar\n", stream_get_contents($stream));
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::write
+     * @covers React\Stream\WritableResourceStream::handleWrite
+     */
+    public function testDrainAfterWrite()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $buffer = new WritableResourceStream($stream, $loop, 2);
+
+        $buffer->on('drain', $this->expectCallableOnce());
+
+        $buffer->write("foo");
+        $buffer->handleWrite();
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::handleWrite
+     */
+    public function testDrainAfterWriteWillRemoveResourceFromLoopWithoutClosing()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+        $loop->expects($this->once())->method('removeWriteStream')->with($stream);
+
+        $buffer = new WritableResourceStream($stream, $loop, 2);
+
+        $buffer->on('drain', $this->expectCallableOnce());
+
+        $buffer->on('close', $this->expectCallableNever());
+
+        $buffer->write("foo");
+        $buffer->handleWrite();
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::handleWrite
+     */
+    public function testClosingDuringDrainAfterWriteWillRemoveResourceFromLoopOnceAndClose()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+        $loop->expects($this->once())->method('removeWriteStream')->with($stream);
+
+        $buffer = new WritableResourceStream($stream, $loop, 2);
+
+        $buffer->on('drain', function () use ($buffer) {
+            $buffer->close();
+        });
+
+        $buffer->on('close', $this->expectCallableOnce());
+
+        $buffer->write("foo");
+        $buffer->handleWrite();
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::end
+     */
+    public function testEndWithoutDataClosesImmediatelyIfWritableResourceStreamIsEmpty()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $buffer = new WritableResourceStream($stream, $loop);
+        $buffer->on('error', $this->expectCallableNever());
+        $buffer->on('close', $this->expectCallableOnce());
+
+        $this->assertTrue($buffer->isWritable());
+        $buffer->end();
+        $this->assertFalse($buffer->isWritable());
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::end
+     */
+    public function testEndWithoutDataDoesNotCloseIfWritableResourceStreamIsFull()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $buffer = new WritableResourceStream($stream, $loop);
+        $buffer->on('error', $this->expectCallableNever());
+        $buffer->on('close', $this->expectCallableNever());
+
+        $buffer->write('foo');
+
+        $this->assertTrue($buffer->isWritable());
+        $buffer->end();
+        $this->assertFalse($buffer->isWritable());
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::end
+     */
+    public function testEndWithDataClosesImmediatelyIfWritableResourceStreamFlushes()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $filterBuffer = '';
+        $loop = $this->createLoopMock();
+
+        $buffer = new WritableResourceStream($stream, $loop);
+        $buffer->on('error', $this->expectCallableNever());
+        $buffer->on('close', $this->expectCallableOnce());
+
+        Filter\append($stream, function ($chunk) use (&$filterBuffer) {
+            $filterBuffer .= $chunk;
+            return $chunk;
+        });
+
+        $this->assertTrue($buffer->isWritable());
+        $buffer->end('final words');
+        $this->assertFalse($buffer->isWritable());
+
+        $buffer->handleWrite();
+        $this->assertSame('final words', $filterBuffer);
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::end
+     */
+    public function testEndWithDataDoesNotCloseImmediatelyIfWritableResourceStreamIsFull()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $buffer = new WritableResourceStream($stream, $loop);
+        $buffer->on('error', $this->expectCallableNever());
+        $buffer->on('close', $this->expectCallableNever());
+
+        $buffer->write('foo');
+
+        $this->assertTrue($buffer->isWritable());
+        $buffer->end('final words');
+        $this->assertFalse($buffer->isWritable());
+
+        rewind($stream);
+        $this->assertSame('', stream_get_contents($stream));
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::isWritable
+     * @covers React\Stream\WritableResourceStream::close
+     */
+    public function testClose()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $buffer = new WritableResourceStream($stream, $loop);
+        $buffer->on('error', $this->expectCallableNever());
+        $buffer->on('close', $this->expectCallableOnce());
+
+        $this->assertTrue($buffer->isWritable());
+        $buffer->close();
+        $this->assertFalse($buffer->isWritable());
+
+        $this->assertEquals(array(), $buffer->listeners('close'));
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::close
+     */
+    public function testClosingAfterWriteRemovesStreamFromLoop()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+        $buffer = new WritableResourceStream($stream, $loop);
+
+        $loop->expects($this->once())->method('removeWriteStream')->with($stream);
+
+        $buffer->write('foo');
+        $buffer->close();
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::close
+     */
+    public function testClosingWithoutWritingDoesNotRemoveStreamFromLoop()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+        $buffer = new WritableResourceStream($stream, $loop);
+
+        $loop->expects($this->never())->method('removeWriteStream');
+
+        $buffer->close();
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::close
+     */
+    public function testDoubleCloseWillEmitOnlyOnce()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createLoopMock();
+
+        $buffer = new WritableResourceStream($stream, $loop);
+        $buffer->on('close', $this->expectCallableOnce());
+
+        $buffer->close();
+        $buffer->close();
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::write
+     * @covers React\Stream\WritableResourceStream::close
+     */
+    public function testWritingToClosedWritableResourceStreamShouldNotWriteToStream()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $filterBuffer = '';
+        $loop = $this->createLoopMock();
+
+        $buffer = new WritableResourceStream($stream, $loop);
+
+        Filter\append($stream, function ($chunk) use (&$filterBuffer) {
+            $filterBuffer .= $chunk;
+            return $chunk;
+        });
+
+        $buffer->close();
+
+        $buffer->write('foo');
+
+        $buffer->handleWrite();
+        $this->assertSame('', $filterBuffer);
+    }
+
+    /**
+     * @covers React\Stream\WritableResourceStream::handleWrite
+     */
+    public function testErrorWhenStreamResourceIsInvalid()
+    {
+        $stream = fopen('php://temp', 'r+');
+        $loop = $this->createWriteableLoopMock();
+
+        $error = null;
+
+        $buffer = new WritableResourceStream($stream, $loop);
+        $buffer->on('error', function ($message) use (&$error) {
+            $error = $message;
+        });
+
+        // invalidate stream resource
+        fclose($stream);
+
+        $buffer->write('Attempting to write to bad stream');
+
+        $this->assertInstanceOf('Exception', $error);
+
+        // the error messages differ between PHP versions, let's just check substrings
+        $this->assertContains('Unable to write to stream: ', $error->getMessage());
+        $this->assertContains(' not a valid stream resource', $error->getMessage(), '', true);
+    }
+
+    public function testWritingToClosedStream()
+    {
+        if ('Darwin' === PHP_OS) {
+            $this->markTestSkipped('OS X issue with shutting down pair for writing');
+        }
+
+        list($a, $b) = stream_socket_pair(STREAM_PF_UNIX, STREAM_SOCK_STREAM, STREAM_IPPROTO_IP);
+        $loop = $this->createLoopMock();
+
+        $error = null;
+
+        $buffer = new WritableResourceStream($a, $loop);
+        $buffer->on('error', function($message) use (&$error) {
+            $error = $message;
+        });
+
+        $buffer->write('foo');
+        $buffer->handleWrite();
+        stream_socket_shutdown($b, STREAM_SHUT_RD);
+        stream_socket_shutdown($a, STREAM_SHUT_RD);
+        $buffer->write('bar');
+        $buffer->handleWrite();
+
+        $this->assertInstanceOf('Exception', $error);
+        $this->assertSame('Unable to write to stream: fwrite(): send of 3 bytes failed with errno=32 Broken pipe', $error->getMessage());
+    }
+
+    private function createWriteableLoopMock()
+    {
+        $loop = $this->createLoopMock();
+        $loop->preventWrites = false;
+        $loop
+            ->expects($this->any())
+            ->method('addWriteStream')
+            ->will($this->returnCallback(function ($stream, $listener) use ($loop) {
+                if (!$loop->preventWrites) {
+                    call_user_func($listener, $stream);
+                }
+            }));
+
+        return $loop;
+    }
+
+    private function createLoopMock()
+    {
+        return $this->getMockBuilder('React\EventLoop\LoopInterface')->getMock();
+    }
+}