diff --git a/composer.json b/composer.json
index a087bca..749f968 100644
--- a/composer.json
+++ b/composer.json
@@ -12,11 +12,11 @@
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diff --git a/composer.lock b/composer.lock
index a766129..26def97 100644
--- a/composer.lock
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@@ -4,38 +4,38 @@
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-                }
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@@ -53,38 +53,40 @@
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-            "time": "2015-07-01 11:25:50"
+            "time": "2019-08-26T08:26:39+00:00"
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@@ -104,37 +106,37 @@
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-            "homepage": "https://github.com/doctrine/instantiator",
+            "homepage": "https://www.doctrine-project.org/projects/instantiator.html",
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                 "instantiate"
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-            "time": "2015-06-14 21:17:01"
+            "time": "2019-03-17T17:37:11+00:00"
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+                "url": "https://github.com/bovigo/vfsStream.git",
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@@ -155,41 +157,94 @@
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+            "time": "2019-08-01T01:38:37+00:00"
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+                "url": "https://github.com/phpDocumentor/ReflectionCommon.git",
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+            "keywords": [
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+                "static analysis"
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@@ -201,26 +256,79 @@
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-                    "email": "mike.vanriel@naenius.com"
+                    "email": "me@mikevanriel.com"
                 }
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-            "time": "2015-02-03 12:10:50"
+            "description": "With this component, a library can provide support for annotations via DocBlocks or otherwise retrieve information that is embedded in a DocBlock.",
+            "time": "2019-09-12T14:27:41+00:00"
+        },
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+            "version": "1.0.1",
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+                "url": "https://github.com/phpDocumentor/TypeResolver.git",
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@@ -233,48 +341,46 @@
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-                    "homepage": "http://github.com/chrisboulton",
-                    "role": "Original developer"
+                    "homepage": "http://github.com/chrisboulton"
                 }
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             "description": "A comprehensive library for generating differences between two hashable objects (strings or arrays).",
-            "time": "2013-11-01 13:02:21"
+            "time": "2016-04-07T12:29:16+00:00"
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-            "version": "2.2.1",
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-                "symfony/process": "~2.1",
-                "symfony/yaml": "~2.1"
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+                "ext-tokenizer": "*",
+                "php": "^7.1, <7.4",
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+                "symfony/console": "^3.4 || ^4.0",
+                "symfony/event-dispatcher": "^3.4 || ^4.0",
+                "symfony/finder": "^3.4 || ^4.0",
+                "symfony/process": "^3.4 || ^4.0",
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-                "phpunit/phpunit": "~4.4",
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-                "symfony/process": "~2.1"
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+                "symfony/filesystem": "^3.4 || ^4.0"
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+                "phpspec/nyan-formatters": "Adds Nyan formatters"
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@@ -282,7 +388,7 @@
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@@ -303,9 +409,13 @@
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                     "name": "Marcello Duarte",
                     "homepage": "http://marcelloduarte.net/"
+                },
+                {
+                    "name": "Ciaran McNulty",
+                    "homepage": "https://ciaranmcnulty.com/"
                 }
             ],
-            "description": "Specification-oriented BDD framework for PHP 5.3+",
+            "description": "Specification-oriented BDD framework for PHP 7.1+",
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             "keywords": [
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@@ -316,39 +426,42 @@
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-            "time": "2015-05-30 15:21:40"
+            "time": "2019-10-02T09:45:39+00:00"
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-            "version": "v1.5.0",
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+                "php": "^5.3|^7.0",
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@@ -376,34 +489,83 @@
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+            "time": "2019-06-13T12:50:23+00:00"
+        },
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+            "version": "1.0.0",
+            "source": {
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+                "url": "https://github.com/php-fig/container.git",
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+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
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+            "authors": [
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+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
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+            ],
+            "description": "Common Container Interface (PHP FIG PSR-11)",
+            "homepage": "https://github.com/php-fig/container",
+            "keywords": [
+                "PSR-11",
+                "container",
+                "container-interface",
+                "container-interop",
+                "psr"
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+            "time": "2017-02-14T16:28:37+00:00"
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-            "version": "1.2.0",
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+            },
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+            ],
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+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill backporting some PHP 7.3+ features to lower PHP versions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "time": "2019-08-06T08:03:45+00:00"
+        },
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+            "version": "v1.1.6",
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+                "url": "https://github.com/symfony/service-contracts.git",
+                "reference": "ea7263d6b6d5f798b56a45a5b8d686725f2719a3"
+            },
+            "dist": {
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+            },
+            "suggest": {
+                "symfony/service-implementation": ""
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.1-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Contracts\\Service\\": ""
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Generic abstractions related to writing services",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "abstractions",
+                "contracts",
+                "decoupling",
+                "interfaces",
+                "interoperability",
+                "standards"
+            ],
+            "time": "2019-08-20T14:44:19+00:00"
         },
         {
             "name": "symfony/yaml",
-            "version": "v2.7.3",
+            "version": "v4.3.4",
             "source": {
                 "type": "git",
-                "url": "https://github.com/symfony/Yaml.git",
-                "reference": "71340e996171474a53f3d29111d046be4ad8a0ff"
+                "url": "https://github.com/symfony/yaml.git",
+                "reference": "5a0b7c32dc3ec56fd4abae8a4a71b0cf05013686"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/Yaml/zipball/71340e996171474a53f3d29111d046be4ad8a0ff",
-                "reference": "71340e996171474a53f3d29111d046be4ad8a0ff",
+                "url": "https://api.github.com/repos/symfony/yaml/zipball/5a0b7c32dc3ec56fd4abae8a4a71b0cf05013686",
+                "reference": "5a0b7c32dc3ec56fd4abae8a4a71b0cf05013686",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.9"
+                "php": "^7.1.3",
+                "symfony/polyfill-ctype": "~1.8"
+            },
+            "conflict": {
+                "symfony/console": "<3.4"
             },
             "require-dev": {
-                "symfony/phpunit-bridge": "~2.7"
+                "symfony/console": "~3.4|~4.0"
+            },
+            "suggest": {
+                "symfony/console": "For validating YAML files using the lint command"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.7-dev"
+                    "dev-master": "4.3-dev"
                 }
             },
             "autoload": {
                 "psr-4": {
                     "Symfony\\Component\\Yaml\\": ""
-                }
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -824,7 +1322,57 @@
             ],
             "description": "Symfony Yaml Component",
             "homepage": "https://symfony.com",
-            "time": "2015-07-28 14:07:07"
+            "time": "2019-08-20T14:27:59+00:00"
+        },
+        {
+            "name": "webmozart/assert",
+            "version": "1.5.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/webmozart/assert.git",
+                "reference": "88e6d84706d09a236046d686bbea96f07b3a34f4"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/webmozart/assert/zipball/88e6d84706d09a236046d686bbea96f07b3a34f4",
+                "reference": "88e6d84706d09a236046d686bbea96f07b3a34f4",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.3.3 || ^7.0",
+                "symfony/polyfill-ctype": "^1.8"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^4.8.36 || ^7.5.13"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.3-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Webmozart\\Assert\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Bernhard Schussek",
+                    "email": "bschussek@gmail.com"
+                }
+            ],
+            "description": "Assertions to validate method input/output with nice error messages.",
+            "keywords": [
+                "assert",
+                "check",
+                "validate"
+            ],
+            "time": "2019-08-24T08:43:50+00:00"
         }
     ],
     "aliases": [],
@@ -833,7 +1381,7 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": ">=5.3.3"
+        "php": "^7.2"
     },
     "platform-dev": []
 }