diff --git a/.php_cs.dist b/.php_cs.dist
new file mode 100644
index 0000000..be91890
--- /dev/null
+++ b/.php_cs.dist
@@ -0,0 +1,14 @@
+<?php
+
+$finder = PhpCsFixer\Finder::create()
+    ->in(__DIR__)
+    ->exclude(['fixtures']);
+
+return PhpCsFixer\Config::create()
+    ->setRules([
+        '@PSR2' => true,
+        'array_syntax' => ['syntax' => 'short'],
+        'ordered_imports' => true,
+        'phpdoc_order' => true,
+    ])
+    ->setFinder($finder);
diff --git a/composer.json b/composer.json
index 7a907c7..ee714d5 100644
--- a/composer.json
+++ b/composer.json
@@ -11,6 +11,7 @@
     },
     "require-dev": {
         "php": "5.6 || ^7.0",
+        "friendsofphp/php-cs-fixer": "^2.16",
         "phpunit/phpunit": "^9.0",
         "symfony/var-dumper": "^3.0 || ^4.0 || ^5.0"
     },
diff --git a/composer.lock b/composer.lock
index 835ad36..020ac68 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "a32dc8d2b5bef1cbe30356b9599564c5",
+    "content-hash": "5062ee65a1c2592573bf5014bb636717",
     "packages": [
         {
             "name": "psr/container",
@@ -663,6 +663,179 @@
         }
     ],
     "packages-dev": [
+        {
+            "name": "composer/semver",
+            "version": "1.5.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/composer/semver.git",
+                "reference": "c6bea70230ef4dd483e6bbcab6005f682ed3a8de"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/composer/semver/zipball/c6bea70230ef4dd483e6bbcab6005f682ed3a8de",
+                "reference": "c6bea70230ef4dd483e6bbcab6005f682ed3a8de",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.3.2 || ^7.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.5 || ^5.0.5"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Composer\\Semver\\": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nils Adermann",
+                    "email": "naderman@naderman.de",
+                    "homepage": "http://www.naderman.de"
+                },
+                {
+                    "name": "Jordi Boggiano",
+                    "email": "j.boggiano@seld.be",
+                    "homepage": "http://seld.be"
+                },
+                {
+                    "name": "Rob Bast",
+                    "email": "rob.bast@gmail.com",
+                    "homepage": "http://robbast.nl"
+                }
+            ],
+            "description": "Semver library that offers utilities, version constraint parsing and validation.",
+            "keywords": [
+                "semantic",
+                "semver",
+                "validation",
+                "versioning"
+            ],
+            "time": "2020-01-13T12:06:48+00:00"
+        },
+        {
+            "name": "composer/xdebug-handler",
+            "version": "1.4.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/composer/xdebug-handler.git",
+                "reference": "cbe23383749496fe0f373345208b79568e4bc248"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/composer/xdebug-handler/zipball/cbe23383749496fe0f373345208b79568e4bc248",
+                "reference": "cbe23383749496fe0f373345208b79568e4bc248",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.3.2 || ^7.0 || ^8.0",
+                "psr/log": "^1.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.8.35 || ^5.7 || 6.5 - 8"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Composer\\XdebugHandler\\": "src"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "John Stevenson",
+                    "email": "john-stevenson@blueyonder.co.uk"
+                }
+            ],
+            "description": "Restarts a process without Xdebug.",
+            "keywords": [
+                "Xdebug",
+                "performance"
+            ],
+            "time": "2019-11-06T16:40:04+00:00"
+        },
+        {
+            "name": "doctrine/annotations",
+            "version": "v1.8.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/doctrine/annotations.git",
+                "reference": "904dca4eb10715b92569fbcd79e201d5c349b6bc"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/doctrine/annotations/zipball/904dca4eb10715b92569fbcd79e201d5c349b6bc",
+                "reference": "904dca4eb10715b92569fbcd79e201d5c349b6bc",
+                "shasum": ""
+            },
+            "require": {
+                "doctrine/lexer": "1.*",
+                "php": "^7.1"
+            },
+            "require-dev": {
+                "doctrine/cache": "1.*",
+                "phpunit/phpunit": "^7.5"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.7.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Doctrine\\Common\\Annotations\\": "lib/Doctrine/Common/Annotations"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Guilherme Blanco",
+                    "email": "guilhermeblanco@gmail.com"
+                },
+                {
+                    "name": "Roman Borschel",
+                    "email": "roman@code-factory.org"
+                },
+                {
+                    "name": "Benjamin Eberlei",
+                    "email": "kontakt@beberlei.de"
+                },
+                {
+                    "name": "Jonathan Wage",
+                    "email": "jonwage@gmail.com"
+                },
+                {
+                    "name": "Johannes Schmitt",
+                    "email": "schmittjoh@gmail.com"
+                }
+            ],
+            "description": "Docblock Annotations Parser",
+            "homepage": "http://www.doctrine-project.org",
+            "keywords": [
+                "annotations",
+                "docblock",
+                "parser"
+            ],
+            "time": "2019-10-01T18:55:10+00:00"
+        },
         {
             "name": "doctrine/instantiator",
             "version": "1.3.0",
@@ -719,6 +892,157 @@
             ],
             "time": "2019-10-21T16:45:58+00:00"
         },
+        {
+            "name": "doctrine/lexer",
+            "version": "1.2.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/doctrine/lexer.git",
+                "reference": "5242d66dbeb21a30dd8a3e66bf7a73b66e05e1f6"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/doctrine/lexer/zipball/5242d66dbeb21a30dd8a3e66bf7a73b66e05e1f6",
+                "reference": "5242d66dbeb21a30dd8a3e66bf7a73b66e05e1f6",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2"
+            },
+            "require-dev": {
+                "doctrine/coding-standard": "^6.0",
+                "phpstan/phpstan": "^0.11.8",
+                "phpunit/phpunit": "^8.2"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.2.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Doctrine\\Common\\Lexer\\": "lib/Doctrine/Common/Lexer"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Guilherme Blanco",
+                    "email": "guilhermeblanco@gmail.com"
+                },
+                {
+                    "name": "Roman Borschel",
+                    "email": "roman@code-factory.org"
+                },
+                {
+                    "name": "Johannes Schmitt",
+                    "email": "schmittjoh@gmail.com"
+                }
+            ],
+            "description": "PHP Doctrine Lexer parser library that can be used in Top-Down, Recursive Descent Parsers.",
+            "homepage": "https://www.doctrine-project.org/projects/lexer.html",
+            "keywords": [
+                "annotations",
+                "docblock",
+                "lexer",
+                "parser",
+                "php"
+            ],
+            "time": "2019-10-30T14:39:59+00:00"
+        },
+        {
+            "name": "friendsofphp/php-cs-fixer",
+            "version": "v2.16.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/FriendsOfPHP/PHP-CS-Fixer.git",
+                "reference": "c8afb599858876e95e8ebfcd97812d383fa23f02"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/FriendsOfPHP/PHP-CS-Fixer/zipball/c8afb599858876e95e8ebfcd97812d383fa23f02",
+                "reference": "c8afb599858876e95e8ebfcd97812d383fa23f02",
+                "shasum": ""
+            },
+            "require": {
+                "composer/semver": "^1.4",
+                "composer/xdebug-handler": "^1.2",
+                "doctrine/annotations": "^1.2",
+                "ext-json": "*",
+                "ext-tokenizer": "*",
+                "php": "^5.6 || ^7.0",
+                "php-cs-fixer/diff": "^1.3",
+                "symfony/console": "^3.4.17 || ^4.1.6 || ^5.0",
+                "symfony/event-dispatcher": "^3.0 || ^4.0 || ^5.0",
+                "symfony/filesystem": "^3.0 || ^4.0 || ^5.0",
+                "symfony/finder": "^3.0 || ^4.0 || ^5.0",
+                "symfony/options-resolver": "^3.0 || ^4.0 || ^5.0",
+                "symfony/polyfill-php70": "^1.0",
+                "symfony/polyfill-php72": "^1.4",
+                "symfony/process": "^3.0 || ^4.0 || ^5.0",
+                "symfony/stopwatch": "^3.0 || ^4.0 || ^5.0"
+            },
+            "require-dev": {
+                "johnkary/phpunit-speedtrap": "^1.1 || ^2.0 || ^3.0",
+                "justinrainbow/json-schema": "^5.0",
+                "keradus/cli-executor": "^1.2",
+                "mikey179/vfsstream": "^1.6",
+                "php-coveralls/php-coveralls": "^2.1",
+                "php-cs-fixer/accessible-object": "^1.0",
+                "php-cs-fixer/phpunit-constraint-isidenticalstring": "^1.1",
+                "php-cs-fixer/phpunit-constraint-xmlmatchesxsd": "^1.1",
+                "phpunit/phpunit": "^5.7.27 || ^6.5.14 || ^7.1",
+                "phpunitgoodpractices/traits": "^1.8",
+                "symfony/phpunit-bridge": "^4.3 || ^5.0",
+                "symfony/yaml": "^3.0 || ^4.0 || ^5.0"
+            },
+            "suggest": {
+                "ext-mbstring": "For handling non-UTF8 characters in cache signature.",
+                "php-cs-fixer/phpunit-constraint-isidenticalstring": "For IsIdenticalString constraint.",
+                "php-cs-fixer/phpunit-constraint-xmlmatchesxsd": "For XmlMatchesXsd constraint.",
+                "symfony/polyfill-mbstring": "When enabling `ext-mbstring` is not possible."
+            },
+            "bin": [
+                "php-cs-fixer"
+            ],
+            "type": "application",
+            "autoload": {
+                "psr-4": {
+                    "PhpCsFixer\\": "src/"
+                },
+                "classmap": [
+                    "tests/Test/AbstractFixerTestCase.php",
+                    "tests/Test/AbstractIntegrationCaseFactory.php",
+                    "tests/Test/AbstractIntegrationTestCase.php",
+                    "tests/Test/Assert/AssertTokensTrait.php",
+                    "tests/Test/IntegrationCase.php",
+                    "tests/Test/IntegrationCaseFactory.php",
+                    "tests/Test/IntegrationCaseFactoryInterface.php",
+                    "tests/Test/InternalIntegrationCaseFactory.php",
+                    "tests/TestCase.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Dariusz Rumiński",
+                    "email": "dariusz.ruminski@gmail.com"
+                }
+            ],
+            "description": "A tool to automatically fix PHP code style",
+            "time": "2019-11-25T22:10:32+00:00"
+        },
         {
             "name": "myclabs/deep-copy",
             "version": "1.9.5",
@@ -767,6 +1091,51 @@
             ],
             "time": "2020-01-17T21:11:47+00:00"
         },
+        {
+            "name": "paragonie/random_compat",
+            "version": "v9.99.99",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/paragonie/random_compat.git",
+                "reference": "84b4dfb120c6f9b4ff7b3685f9b8f1aa365a0c95"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/paragonie/random_compat/zipball/84b4dfb120c6f9b4ff7b3685f9b8f1aa365a0c95",
+                "reference": "84b4dfb120c6f9b4ff7b3685f9b8f1aa365a0c95",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "4.*|5.*",
+                "vimeo/psalm": "^1"
+            },
+            "suggest": {
+                "ext-libsodium": "Provides a modern crypto API that can be used to generate random bytes."
+            },
+            "type": "library",
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Paragon Initiative Enterprises",
+                    "email": "security@paragonie.com",
+                    "homepage": "https://paragonie.com"
+                }
+            ],
+            "description": "PHP 5.x polyfill for random_bytes() and random_int() from PHP 7",
+            "keywords": [
+                "csprng",
+                "polyfill",
+                "pseudorandom",
+                "random"
+            ],
+            "time": "2018-07-02T15:55:56+00:00"
+        },
         {
             "name": "phar-io/manifest",
             "version": "1.0.3",
@@ -869,6 +1238,57 @@
             "description": "Library for handling version information and constraints",
             "time": "2018-07-08T19:19:57+00:00"
         },
+        {
+            "name": "php-cs-fixer/diff",
+            "version": "v1.3.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/PHP-CS-Fixer/diff.git",
+                "reference": "78bb099e9c16361126c86ce82ec4405ebab8e756"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/PHP-CS-Fixer/diff/zipball/78bb099e9c16361126c86ce82ec4405ebab8e756",
+                "reference": "78bb099e9c16361126c86ce82ec4405ebab8e756",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.6 || ^7.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^5.7.23 || ^6.4.3",
+                "symfony/process": "^3.3"
+            },
+            "type": "library",
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Kore Nordmann",
+                    "email": "mail@kore-nordmann.de"
+                },
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                },
+                {
+                    "name": "SpacePossum"
+                }
+            ],
+            "description": "sebastian/diff v2 backport support for PHP5.6",
+            "homepage": "https://github.com/PHP-CS-Fixer",
+            "keywords": [
+                "diff"
+            ],
+            "time": "2018-02-15T16:58:55+00:00"
+        },
         {
             "name": "phpdocumentor/reflection-common",
             "version": "2.0.0",
@@ -1481,6 +1901,99 @@
             ],
             "time": "2020-02-07T06:56:17+00:00"
         },
+        {
+            "name": "psr/event-dispatcher",
+            "version": "1.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/event-dispatcher.git",
+                "reference": "dbefd12671e8a14ec7f180cab83036ed26714bb0"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/event-dispatcher/zipball/dbefd12671e8a14ec7f180cab83036ed26714bb0",
+                "reference": "dbefd12671e8a14ec7f180cab83036ed26714bb0",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.2.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\EventDispatcher\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Standard interfaces for event handling.",
+            "keywords": [
+                "events",
+                "psr",
+                "psr-14"
+            ],
+            "time": "2019-01-08T18:20:26+00:00"
+        },
+        {
+            "name": "psr/log",
+            "version": "1.1.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/log.git",
+                "reference": "446d54b4cb6bf489fc9d75f55843658e6f25d801"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/log/zipball/446d54b4cb6bf489fc9d75f55843658e6f25d801",
+                "reference": "446d54b4cb6bf489fc9d75f55843658e6f25d801",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.1.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Log\\": "Psr/Log/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interface for logging libraries",
+            "homepage": "https://github.com/php-fig/log",
+            "keywords": [
+                "log",
+                "psr",
+                "psr-3"
+            ],
+            "time": "2019-11-01T11:05:21+00:00"
+        },
         {
             "name": "sebastian/code-unit-reverse-lookup",
             "version": "2.0.0",
@@ -2099,6 +2612,401 @@
             "homepage": "https://github.com/sebastianbergmann/version",
             "time": "2020-01-21T06:36:37+00:00"
         },
+        {
+            "name": "symfony/event-dispatcher",
+            "version": "v5.0.4",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/event-dispatcher.git",
+                "reference": "4a7a8cdca1120c091b4797f0e5bba69c1e783224"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/event-dispatcher/zipball/4a7a8cdca1120c091b4797f0e5bba69c1e783224",
+                "reference": "4a7a8cdca1120c091b4797f0e5bba69c1e783224",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.2.5",
+                "symfony/event-dispatcher-contracts": "^2"
+            },
+            "conflict": {
+                "symfony/dependency-injection": "<4.4"
+            },
+            "provide": {
+                "psr/event-dispatcher-implementation": "1.0",
+                "symfony/event-dispatcher-implementation": "2.0"
+            },
+            "require-dev": {
+                "psr/log": "~1.0",
+                "symfony/config": "^4.4|^5.0",
+                "symfony/dependency-injection": "^4.4|^5.0",
+                "symfony/expression-language": "^4.4|^5.0",
+                "symfony/http-foundation": "^4.4|^5.0",
+                "symfony/service-contracts": "^1.1|^2",
+                "symfony/stopwatch": "^4.4|^5.0"
+            },
+            "suggest": {
+                "symfony/dependency-injection": "",
+                "symfony/http-kernel": ""
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "5.0-dev"
+                }
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