diff --git a/composer.json b/composer.json
index 0c57c02e..be04049c 100644
--- a/composer.json
+++ b/composer.json
@@ -33,7 +33,8 @@
         "jakub-onderka/php-parallel-lint": "^0.9.2",
         "laravel/dusk": "^1.0",
         "mockery/mockery": "0.9.*",
-        "phpunit/phpunit": "~5.7"
+        "phpunit/phpunit": "~5.7",
+        "sebastian/phpcpd": "^3.0"
     },
     "autoload": {
         "classmap": [
diff --git a/composer.lock b/composer.lock
index 5f37b080..84679550 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "content-hash": "3a440750c3e5403668fd82dbe7c54de0",
+    "content-hash": "7cfa8f05a76283f45a0f1a30d00ecbad",
     "packages": [
         {
             "name": "aws/aws-sdk-php",
@@ -5151,6 +5151,45 @@
             ],
             "time": "2016-11-19T08:54:04+00:00"
         },
+        {
+            "name": "sebastian/finder-facade",
+            "version": "1.2.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/finder-facade.git",
+                "reference": "2a6f7f57efc0aa2d23297d9fd9e2a03111a8c0b9"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/finder-facade/zipball/2a6f7f57efc0aa2d23297d9fd9e2a03111a8c0b9",
+                "reference": "2a6f7f57efc0aa2d23297d9fd9e2a03111a8c0b9",
+                "shasum": ""
+            },
+            "require": {
+                "symfony/finder": "~2.3|~3.0",
+                "theseer/fdomdocument": "~1.3"
+            },
+            "type": "library",
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de",
+                    "role": "lead"
+                }
+            ],
+            "description": "FinderFacade is a convenience wrapper for Symfony's Finder component.",
+            "homepage": "https://github.com/sebastianbergmann/finder-facade",
+            "time": "2016-02-17T07:02:23+00:00"
+        },
         {
             "name": "sebastian/global-state",
             "version": "1.1.1",
@@ -5248,6 +5287,56 @@
             "homepage": "https://github.com/sebastianbergmann/object-enumerator/",
             "time": "2017-02-18T15:18:39+00:00"
         },
+        {
+            "name": "sebastian/phpcpd",
+            "version": "3.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sebastianbergmann/phpcpd.git",
+                "reference": "d7006078b75a34c9250831c3453a2e256a687615"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpcpd/zipball/d7006078b75a34c9250831c3453a2e256a687615",
+                "reference": "d7006078b75a34c9250831c3453a2e256a687615",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^5.6|^7.0",
+                "phpunit/php-timer": "^1.0.6",
+                "sebastian/finder-facade": "^1.1",
+                "sebastian/version": "^2.0",
+                "symfony/console": "^3.0"
+            },
+            "bin": [
+                "phpcpd"
+            ],
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.0-dev"
+                }
+            },
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Sebastian Bergmann",
+                    "email": "sebastian@phpunit.de",
+                    "role": "lead"
+                }
+            ],
+            "description": "Copy/Paste Detector (CPD) for PHP code.",
+            "homepage": "https://github.com/sebastianbergmann/phpcpd",
+            "time": "2017-02-05T07:48:01+00:00"
+        },
         {
             "name": "sebastian/recursion-context",
             "version": "2.0.0",
@@ -5441,6 +5530,46 @@
             "homepage": "https://symfony.com",
             "time": "2017-03-07T16:47:02+00:00"
         },
+        {
+            "name": "theseer/fdomdocument",
+            "version": "1.6.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/theseer/fDOMDocument.git",
+                "reference": "d9ad139d6c2e8edf5e313ffbe37ff13344cf0684"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/theseer/fDOMDocument/zipball/d9ad139d6c2e8edf5e313ffbe37ff13344cf0684",
+                "reference": "d9ad139d6c2e8edf5e313ffbe37ff13344cf0684",
+                "shasum": ""
+            },
+            "require": {
+                "ext-dom": "*",
+                "lib-libxml": "*",
+                "php": ">=5.3.3"
+            },
+            "type": "library",
+            "autoload": {
+                "classmap": [
+                    "src/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "authors": [
+                {
+                    "name": "Arne Blankerts",
+                    "email": "arne@blankerts.de",
+                    "role": "lead"
+                }
+            ],
+            "description": "The classes contained within this repository extend the standard DOM to use exceptions at all occasions of errors instead of PHP warnings or notices. They also add various custom methods and shortcuts for convenience and to simplify the usage of DOM.",
+            "homepage": "https://github.com/theseer/fDOMDocument",
+            "time": "2015-05-27T22:58:02+00:00"
+        },
         {
             "name": "webmozart/assert",
             "version": "1.2.0",