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index e0a8cbc..d148b30 100644
--- a/composer.json
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diff --git a/composer.lock b/composer.lock
index aae97b3..2abccf4 100644
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@@ -655,32 +747,32 @@
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-            "version": "1.3.0",
+            "version": "1.4.1",
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                 "url": "https://github.com/sebastianbergmann/diff.git",
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-                "reference": "863df9687835c62aa423a22412d26fa2ebde3fd3",
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             "require": {
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             "require-dev": {
-                "phpunit/phpunit": "~4.2"
+                "phpunit/phpunit": "~4.8"
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             "extra": {
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-                    "dev-master": "1.3-dev"
+                    "dev-master": "1.4-dev"
                 }
             },
             "autoload": {
@@ -703,24 +795,24 @@
                 }
             ],
             "description": "Diff implementation",
-            "homepage": "http://www.github.com/sebastianbergmann/diff",
+            "homepage": "https://github.com/sebastianbergmann/diff",
             "keywords": [
                 "diff"
             ],
-            "time": "2015-02-22 15:13:53"
+            "time": "2015-12-08 07:14:41"
         },
         {
             "name": "sebastian/environment",
-            "version": "1.2.2",
+            "version": "1.3.7",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/environment.git",
-                "reference": "5a8c7d31914337b69923db26c4221b81ff5a196e"
+                "reference": "4e8f0da10ac5802913afc151413bc8c53b6c2716"
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-                "reference": "5a8c7d31914337b69923db26c4221b81ff5a196e",
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+                "reference": "4e8f0da10ac5802913afc151413bc8c53b6c2716",
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             },
             "require": {
@@ -757,20 +849,20 @@
                 "environment",
                 "hhvm"
             ],
-            "time": "2015-01-01 10:01:08"
+            "time": "2016-05-17 03:18:57"
         },
         {
             "name": "sebastian/exporter",
-            "version": "1.2.0",
+            "version": "1.2.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/exporter.git",
-                "reference": "84839970d05254c73cde183a721c7af13aede943"
+                "reference": "7ae5513327cb536431847bcc0c10edba2701064e"
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-                "reference": "84839970d05254c73cde183a721c7af13aede943",
+                "url": "https://api.github.com/repos/sebastianbergmann/exporter/zipball/7ae5513327cb536431847bcc0c10edba2701064e",
+                "reference": "7ae5513327cb536431847bcc0c10edba2701064e",
                 "shasum": ""
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             "require": {
@@ -823,20 +915,20 @@
                 "export",
                 "exporter"
             ],
-            "time": "2015-01-27 07:23:06"
+            "time": "2015-06-21 07:55:53"
         },
         {
             "name": "sebastian/global-state",
-            "version": "1.0.0",
+            "version": "1.1.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/global-state.git",
-                "reference": "c7428acdb62ece0a45e6306f1ae85e1c05b09c01"
+                "reference": "bc37d50fea7d017d3d340f230811c9f1d7280af4"
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-                "url": "https://api.github.com/repos/sebastianbergmann/global-state/zipball/c7428acdb62ece0a45e6306f1ae85e1c05b09c01",
-                "reference": "c7428acdb62ece0a45e6306f1ae85e1c05b09c01",
+                "url": "https://api.github.com/repos/sebastianbergmann/global-state/zipball/bc37d50fea7d017d3d340f230811c9f1d7280af4",
+                "reference": "bc37d50fea7d017d3d340f230811c9f1d7280af4",
                 "shasum": ""
             },
             "require": {
@@ -874,20 +966,66 @@
             "keywords": [
                 "global state"
             ],
-            "time": "2014-10-06 09:23:50"
+            "time": "2015-10-12 03:26:01"
         },
         {
-            "name": "sebastian/recursion-context",
+            "name": "sebastian/object-enumerator",
             "version": "1.0.0",
             "source": {
                 "type": "git",
-                "url": "https://github.com/sebastianbergmann/recursion-context.git",
-                "reference": "3989662bbb30a29d20d9faa04a846af79b276252"
+                "url": "https://github.com/sebastianbergmann/object-enumerator.git",
+                "reference": "d4ca2fb70344987502567bc50081c03e6192fb26"
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-                "reference": "3989662bbb30a29d20d9faa04a846af79b276252",
+                "url": "https://api.github.com/repos/sebastianbergmann/object-enumerator/zipball/d4ca2fb70344987502567bc50081c03e6192fb26",
+                "reference": "d4ca2fb70344987502567bc50081c03e6192fb26",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.6",
+                "sebastian/recursion-context": "~1.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "~5"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                }
+            ],
+            "description": "Traverses array structures and object graphs to enumerate all referenced objects",
+            "homepage": "https://github.com/sebastianbergmann/object-enumerator/",
+            "time": "2016-01-28 13:25:10"
+        },
+        {
+            "name": "sebastian/recursion-context",
+            "version": "1.0.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/recursion-context.git",
+                "reference": "913401df809e99e4f47b27cdd781f4a258d58791"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/recursion-context/zipball/913401df809e99e4f47b27cdd781f4a258d58791",
+                "reference": "913401df809e99e4f47b27cdd781f4a258d58791",
                 "shasum": ""
             },
             "require": {
@@ -927,23 +1065,73 @@
             ],
             "description": "Provides functionality to recursively process PHP variables",
             "homepage": "http://www.github.com/sebastianbergmann/recursion-context",
-            "time": "2015-01-24 09:48:32"
+            "time": "2015-11-11 19:50:13"
         },
         {
-            "name": "sebastian/version",
-            "version": "1.0.5",
+            "name": "sebastian/resource-operations",
+            "version": "1.0.0",
             "source": {
                 "type": "git",
-                "url": "https://github.com/sebastianbergmann/version.git",
-                "reference": "ab931d46cd0d3204a91e1b9a40c4bc13032b58e4"
+                "url": "https://github.com/sebastianbergmann/resource-operations.git",
+                "reference": "ce990bb21759f94aeafd30209e8cfcdfa8bc3f52"
             },
             "dist": {
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-                "url": "https://api.github.com/repos/sebastianbergmann/version/zipball/ab931d46cd0d3204a91e1b9a40c4bc13032b58e4",
-                "reference": "ab931d46cd0d3204a91e1b9a40c4bc13032b58e4",
+                "url": "https://api.github.com/repos/sebastianbergmann/resource-operations/zipball/ce990bb21759f94aeafd30209e8cfcdfa8bc3f52",
+                "reference": "ce990bb21759f94aeafd30209e8cfcdfa8bc3f52",
                 "shasum": ""
             },
+            "require": {
+                "php": ">=5.6.0"
+            },
             "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de"
+                }
+            ],
+            "description": "Provides a list of PHP built-in functions that operate on resources",
+            "homepage": "https://www.github.com/sebastianbergmann/resource-operations",
+            "time": "2015-07-28 20:34:47"
+        },
+        {
+            "name": "sebastian/version",
+            "version": "2.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/version.git",
+                "reference": "c829badbd8fdf16a0bad8aa7fa7971c029f1b9c5"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/version/zipball/c829badbd8fdf16a0bad8aa7fa7971c029f1b9c5",
+                "reference": "c829badbd8fdf16a0bad8aa7fa7971c029f1b9c5",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.6"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.0.x-dev"
+                }
+            },
             "autoload": {
                 "classmap": [
                     "src/"
@@ -962,39 +1150,38 @@
             ],
             "description": "Library that helps with managing the version number of Git-hosted PHP projects",
             "homepage": "https://github.com/sebastianbergmann/version",
-            "time": "2015-02-24 06:35:25"
+            "time": "2016-02-04 12:56:52"
         },
         {
             "name": "symfony/yaml",
-            "version": "v2.6.7",
-            "target-dir": "Symfony/Component/Yaml",
+            "version": "v3.0.6",
             "source": {
                 "type": "git",
-                "url": "https://github.com/symfony/Yaml.git",
-                "reference": "f157ab074e453ecd4c0fa775f721f6e67a99d9e2"
+                "url": "https://github.com/symfony/yaml.git",
+                "reference": "0047c8366744a16de7516622c5b7355336afae96"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/Yaml/zipball/f157ab074e453ecd4c0fa775f721f6e67a99d9e2",
-                "reference": "f157ab074e453ecd4c0fa775f721f6e67a99d9e2",
+                "url": "https://api.github.com/repos/symfony/yaml/zipball/0047c8366744a16de7516622c5b7355336afae96",
+                "reference": "0047c8366744a16de7516622c5b7355336afae96",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.3"
-            },
-            "require-dev": {
-                "symfony/phpunit-bridge": "~2.7"
+                "php": ">=5.5.9"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.6-dev"
+                    "dev-master": "3.0-dev"
                 }
             },
             "autoload": {
-                "psr-0": {
+                "psr-4": {
                     "Symfony\\Component\\Yaml\\": ""
-                }
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
@@ -1012,7 +1199,7 @@
             ],
             "description": "Symfony Yaml Component",
             "homepage": "https://symfony.com",
-            "time": "2015-05-02 15:18:45"
+            "time": "2016-03-04 07:55:57"
         }
     ],
     "aliases": [],
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
index 7dee3d7..a5088c5 100644
--- a/phpunit.xml.dist
+++ b/phpunit.xml.dist
@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phpunit
         bootstrap="test/bootstrap.php"
-        checkForUnintentionallyCoveredCode="true"
         colors="true"
         convertErrorsToExceptions="true"
         convertNoticesToExceptions="true"