diff --git a/composer.json b/composer.json
index eb080e9..9a7f989 100644
--- a/composer.json
+++ b/composer.json
@@ -5,14 +5,15 @@
     "license": "MIT",
     "type": "project",
     "require": {
-        "php": ">=5.6.4",
-        "laravel/framework": "5.4.*",
+        "php": ">=7.0.0",
+        "laravel/framework": "5.5.*",
         "laravel/tinker": "~1.0"
     },
     "require-dev": {
+        "filp/whoops": "~2.0",
         "fzaninotto/faker": "~1.4",
-        "mockery/mockery": "0.9.*",
-        "phpunit/phpunit": "~5.7"
+        "mockery/mockery": "~1.0",
+        "phpunit/phpunit": "~6.0"
     },
     "autoload": {
         "classmap": [
@@ -29,18 +30,14 @@
     },
     "scripts": {
         "post-root-package-install": [
-            "php -r \"file_exists('.env') || copy('.env.example', '.env');\""
+            "@php -r \"file_exists('.env') || copy('.env.example', '.env');\""
         ],
         "post-create-project-cmd": [
-            "php artisan key:generate"
+            "@php artisan key:generate"
         ],
-        "post-install-cmd": [
-            "Illuminate\\Foundation\\ComposerScripts::postInstall",
-            "php artisan optimize"
-        ],
-        "post-update-cmd": [
-            "Illuminate\\Foundation\\ComposerScripts::postUpdate",
-            "php artisan optimize"
+        "post-autoload-dump": [
+            "Illuminate\\Foundation\\ComposerScripts::postAutoloadDump",
+            "@php artisan package:discover"
         ]
     },
     "config": {
diff --git a/composer.lock b/composer.lock
index eee1afb..da09051 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": "96098e473b028cdb2529580554a1ae3e",
+    "content-hash": "eed5a1a98b90f1543f877bbea7faf5ed",
     "packages": [
         {
             "name": "dnoegel/php-xdg-base-dir",
@@ -41,33 +41,33 @@
         },
         {
             "name": "doctrine/inflector",
-            "version": "v1.1.0",
+            "version": "v1.2.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/doctrine/inflector.git",
-                "reference": "90b2128806bfde671b6952ab8bea493942c1fdae"
+                "reference": "e11d84c6e018beedd929cff5220969a3c6d1d462"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/doctrine/inflector/zipball/90b2128806bfde671b6952ab8bea493942c1fdae",
-                "reference": "90b2128806bfde671b6952ab8bea493942c1fdae",
+                "url": "https://api.github.com/repos/doctrine/inflector/zipball/e11d84c6e018beedd929cff5220969a3c6d1d462",
+                "reference": "e11d84c6e018beedd929cff5220969a3c6d1d462",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.2"
+                "php": "^7.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "4.*"
+                "phpunit/phpunit": "^6.2"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.1.x-dev"
+                    "dev-master": "1.2.x-dev"
                 }
             },
             "autoload": {
-                "psr-0": {
-                    "Doctrine\\Common\\Inflector\\": "lib/"
+                "psr-4": {
+                    "Doctrine\\Common\\Inflector\\": "lib/Doctrine/Common/Inflector"
                 }
             },
             "notification-url": "https://packagist.org/downloads/",
@@ -104,7 +104,118 @@
                 "singularize",
                 "string"
             ],
-            "time": "2015-11-06T14:35:42+00:00"
+            "time": "2017-07-22T12:18:28+00:00"
+        },
+        {
+            "name": "doctrine/lexer",
+            "version": "v1.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/doctrine/lexer.git",
+                "reference": "83893c552fd2045dd78aef794c31e694c37c0b8c"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/doctrine/lexer/zipball/83893c552fd2045dd78aef794c31e694c37c0b8c",
+                "reference": "83893c552fd2045dd78aef794c31e694c37c0b8c",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.2"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-0": {
+                    "Doctrine\\Common\\Lexer\\": "lib/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Roman Borschel",
+                    "email": "roman@code-factory.org"
+                },
+                {
+                    "name": "Guilherme Blanco",
+                    "email": "guilhermeblanco@gmail.com"
+                },
+                {
+                    "name": "Johannes Schmitt",
+                    "email": "schmittjoh@gmail.com"
+                }
+            ],
+            "description": "Base library for a lexer that can be used in Top-Down, Recursive Descent Parsers.",
+            "homepage": "http://www.doctrine-project.org",
+            "keywords": [
+                "lexer",
+                "parser"
+            ],
+            "time": "2014-09-09T13:34:57+00:00"
+        },
+        {
+            "name": "egulias/email-validator",
+            "version": "2.1.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/egulias/EmailValidator.git",
+                "reference": "bc31baa11ea2883e017f0a10d9722ef9d50eac1c"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/egulias/EmailValidator/zipball/bc31baa11ea2883e017f0a10d9722ef9d50eac1c",
+                "reference": "bc31baa11ea2883e017f0a10d9722ef9d50eac1c",
+                "shasum": ""
+            },
+            "require": {
+                "doctrine/lexer": "^1.0.1",
+                "php": ">= 5.5"
+            },
+            "require-dev": {
+                "dominicsayers/isemail": "dev-master",
+                "phpunit/phpunit": "^4.8.0",
+                "satooshi/php-coveralls": "dev-master"
+            },
+            "suggest": {
+                "ext-intl": "PHP Internationalization Libraries are required to use the SpoofChecking validation"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Egulias\\EmailValidator\\": "EmailValidator"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Eduardo Gulias Davis"
+                }
+            ],
+            "description": "A library for validating emails against several RFCs",
+            "homepage": "https://github.com/egulias/EmailValidator",
+            "keywords": [
+                "email",
+                "emailvalidation",
+                "emailvalidator",
+                "validation",
+                "validator"
+            ],
+            "time": "2017-01-30T22:07:36+00:00"
         },
         {
             "name": "erusev/parsedown",
@@ -237,39 +348,40 @@
         },
         {
             "name": "laravel/framework",
-            "version": "v5.4.28",
+            "version": "v5.5.18",
             "source": {
                 "type": "git",
                 "url": "https://github.com/laravel/framework.git",
-                "reference": "442511fc62121085d184355e4f964c88942bbecb"
+                "reference": "1cc21baac11551377734b8c17ead17db4c34fe21"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/laravel/framework/zipball/442511fc62121085d184355e4f964c88942bbecb",
-                "reference": "442511fc62121085d184355e4f964c88942bbecb",
+                "url": "https://api.github.com/repos/laravel/framework/zipball/1cc21baac11551377734b8c17ead17db4c34fe21",
+                "reference": "1cc21baac11551377734b8c17ead17db4c34fe21",
                 "shasum": ""
             },
             "require": {
-                "doctrine/inflector": "~1.0",
+                "doctrine/inflector": "~1.1",
                 "erusev/parsedown": "~1.6",
                 "ext-mbstring": "*",
                 "ext-openssl": "*",
                 "league/flysystem": "~1.0",
-                "monolog/monolog": "~1.11",
+                "monolog/monolog": "~1.12",
                 "mtdowling/cron-expression": "~1.0",
                 "nesbot/carbon": "~1.20",
-                "paragonie/random_compat": "~1.4|~2.0",
-                "php": ">=5.6.4",
+                "php": ">=7.0",
+                "psr/container": "~1.0",
+                "psr/simple-cache": "^1.0",
                 "ramsey/uuid": "~3.0",
-                "swiftmailer/swiftmailer": "~5.4",
-                "symfony/console": "~3.2",
-                "symfony/debug": "~3.2",
-                "symfony/finder": "~3.2",
-                "symfony/http-foundation": "~3.2",
-                "symfony/http-kernel": "~3.2",
-                "symfony/process": "~3.2",
-                "symfony/routing": "~3.2",
-                "symfony/var-dumper": "~3.2",
+                "swiftmailer/swiftmailer": "~6.0",
+                "symfony/console": "~3.3",
+                "symfony/debug": "~3.3",
+                "symfony/finder": "~3.3",
+                "symfony/http-foundation": "~3.3",
+                "symfony/http-kernel": "~3.3",
+                "symfony/process": "~3.3",
+                "symfony/routing": "~3.3",
+                "symfony/var-dumper": "~3.3",
                 "tijsverkoyen/css-to-inline-styles": "~2.2",
                 "vlucas/phpdotenv": "~2.2"
             },
@@ -286,7 +398,6 @@
                 "illuminate/database": "self.version",
                 "illuminate/encryption": "self.version",
                 "illuminate/events": "self.version",
-                "illuminate/exception": "self.version",
                 "illuminate/filesystem": "self.version",
                 "illuminate/hashing": "self.version",
                 "illuminate/http": "self.version",
@@ -308,12 +419,14 @@
             "require-dev": {
                 "aws/aws-sdk-php": "~3.0",
                 "doctrine/dbal": "~2.5",
-                "mockery/mockery": "~0.9.4",
+                "filp/whoops": "^2.1.4",
+                "mockery/mockery": "~1.0",
+                "orchestra/testbench-core": "3.5.*",
                 "pda/pheanstalk": "~3.0",
-                "phpunit/phpunit": "~5.7",
-                "predis/predis": "~1.0",
-                "symfony/css-selector": "~3.2",
-                "symfony/dom-crawler": "~3.2"
+                "phpunit/phpunit": "~6.0",
+                "predis/predis": "^1.1.1",
+                "symfony/css-selector": "~3.3",
+                "symfony/dom-crawler": "~3.3"
             },
             "suggest": {
                 "aws/aws-sdk-php": "Required to use the SQS queue driver and SES mail driver (~3.0).",
@@ -327,14 +440,14 @@
                 "pda/pheanstalk": "Required to use the beanstalk queue driver (~3.0).",
                 "predis/predis": "Required to use the redis cache and queue drivers (~1.0).",
                 "pusher/pusher-php-server": "Required to use the Pusher broadcast driver (~2.0).",
-                "symfony/css-selector": "Required to use some of the crawler integration testing tools (~3.2).",
-                "symfony/dom-crawler": "Required to use most of the crawler integration testing tools (~3.2).",
-                "symfony/psr-http-message-bridge": "Required to psr7 bridging features (0.2.*)."
+                "symfony/css-selector": "Required to use some of the crawler integration testing tools (~3.3).",
+                "symfony/dom-crawler": "Required to use most of the crawler integration testing tools (~3.3).",
+                "symfony/psr-http-message-bridge": "Required to psr7 bridging features (~1.0)."
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "5.4-dev"
+                    "dev-master": "5.5-dev"
                 }
             },
             "autoload": {
@@ -362,20 +475,20 @@
                 "framework",
                 "laravel"
             ],
-            "time": "2017-06-30T13:43:07+00:00"
+            "time": "2017-10-19T12:50:26+00:00"
         },
         {
             "name": "laravel/tinker",
-            "version": "v1.0.1",
+            "version": "v1.0.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/laravel/tinker.git",
-                "reference": "7eb2e281395131897407285672ef5532e87e17f9"
+                "reference": "203978fd67f118902acff95925847e70b72e3daf"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/laravel/tinker/zipball/7eb2e281395131897407285672ef5532e87e17f9",
-                "reference": "7eb2e281395131897407285672ef5532e87e17f9",
+                "url": "https://api.github.com/repos/laravel/tinker/zipball/203978fd67f118902acff95925847e70b72e3daf",
+                "reference": "203978fd67f118902acff95925847e70b72e3daf",
                 "shasum": ""
             },
             "require": {
@@ -425,20 +538,20 @@
                 "laravel",
                 "psysh"
             ],
-            "time": "2017-06-01T16:31:26+00:00"
+            "time": "2017-07-13T13:11:05+00:00"
         },
         {
             "name": "league/flysystem",
-            "version": "1.0.40",
+            "version": "1.0.41",
             "source": {
                 "type": "git",
                 "url": "https://github.com/thephpleague/flysystem.git",
-                "reference": "3828f0b24e2c1918bb362d57a53205d6dc8fde61"
+                "reference": "f400aa98912c561ba625ea4065031b7a41e5a155"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/thephpleague/flysystem/zipball/3828f0b24e2c1918bb362d57a53205d6dc8fde61",
-                "reference": "3828f0b24e2c1918bb362d57a53205d6dc8fde61",
+                "url": "https://api.github.com/repos/thephpleague/flysystem/zipball/f400aa98912c561ba625ea4065031b7a41e5a155",
+                "reference": "f400aa98912c561ba625ea4065031b7a41e5a155",
                 "shasum": ""
             },
             "require": {
@@ -459,13 +572,13 @@
                 "league/flysystem-aws-s3-v3": "Allows you to use S3 storage with AWS SDK v3",
                 "league/flysystem-azure": "Allows you to use Windows Azure Blob storage",
                 "league/flysystem-cached-adapter": "Flysystem adapter decorator for metadata caching",
-                "league/flysystem-copy": "Allows you to use Copy.com storage",
                 "league/flysystem-eventable-filesystem": "Allows you to use EventableFilesystem",
                 "league/flysystem-rackspace": "Allows you to use Rackspace Cloud Files",
                 "league/flysystem-sftp": "Allows you to use SFTP server storage via phpseclib",
                 "league/flysystem-webdav": "Allows you to use WebDAV storage",
                 "league/flysystem-ziparchive": "Allows you to use ZipArchive adapter",
-                "spatie/flysystem-dropbox": "Allows you to use Dropbox storage"
+                "spatie/flysystem-dropbox": "Allows you to use Dropbox storage",
+                "srmklive/flysystem-dropbox-v2": "Allows you to use Dropbox storage for PHP 5 applications"
             },
             "type": "library",
             "extra": {
@@ -508,7 +621,7 @@
                 "sftp",
                 "storage"
             ],
-            "time": "2017-04-28T10:15:08+00:00"
+            "time": "2017-08-06T17:41:04+00:00"
         },
         {
             "name": "monolog/monolog",
@@ -687,16 +800,16 @@
         },
         {
             "name": "nikic/php-parser",
-            "version": "v3.0.6",
+            "version": "v3.1.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/nikic/PHP-Parser.git",
-                "reference": "0808939f81c1347a3c8a82a5925385a08074b0f1"
+                "reference": "a1e8e1a30e1352f118feff1a8481066ddc2f234a"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/nikic/PHP-Parser/zipball/0808939f81c1347a3c8a82a5925385a08074b0f1",
-                "reference": "0808939f81c1347a3c8a82a5925385a08074b0f1",
+                "url": "https://api.github.com/repos/nikic/PHP-Parser/zipball/a1e8e1a30e1352f118feff1a8481066ddc2f234a",
+                "reference": "a1e8e1a30e1352f118feff1a8481066ddc2f234a",
                 "shasum": ""
             },
             "require": {
@@ -734,20 +847,20 @@
                 "parser",
                 "php"
             ],
-            "time": "2017-06-28T20:53:48+00:00"
+            "time": "2017-09-02T17:10:46+00:00"
         },
         {
             "name": "paragonie/random_compat",
-            "version": "v2.0.10",
+            "version": "v2.0.11",
             "source": {
                 "type": "git",
                 "url": "https://github.com/paragonie/random_compat.git",
-                "reference": "634bae8e911eefa89c1abfbf1b66da679ac8f54d"
+                "reference": "5da4d3c796c275c55f057af5a643ae297d96b4d8"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/paragonie/random_compat/zipball/634bae8e911eefa89c1abfbf1b66da679ac8f54d",
-                "reference": "634bae8e911eefa89c1abfbf1b66da679ac8f54d",
+                "url": "https://api.github.com/repos/paragonie/random_compat/zipball/5da4d3c796c275c55f057af5a643ae297d96b4d8",
+                "reference": "5da4d3c796c275c55f057af5a643ae297d96b4d8",
                 "shasum": ""
             },
             "require": {
@@ -782,7 +895,56 @@
                 "pseudorandom",
                 "random"
             ],
-            "time": "2017-03-13T16:27:32+00:00"
+            "time": "2017-09-27T21:40:39+00:00"
+        },
+        {
+            "name": "psr/container",
+            "version": "1.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/container.git",
+                "reference": "b7ce3b176482dbbc1245ebf52b181af44c2cf55f"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/container/zipball/b7ce3b176482dbbc1245ebf52b181af44c2cf55f",
+                "reference": "b7ce3b176482dbbc1245ebf52b181af44c2cf55f",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Container\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Common Container Interface (PHP FIG PSR-11)",
+            "homepage": "https://github.com/php-fig/container",
+            "keywords": [
+                "PSR-11",
+                "container",
+                "container-interface",
+                "container-interop",
+                "psr"
+            ],
+            "time": "2017-02-14T16:28:37+00:00"
         },
         {
             "name": "psr/log",
@@ -832,17 +994,65 @@
             "time": "2016-10-10T12:19:37+00:00"
         },
         {
-            "name": "psy/psysh",
-            "version": "v0.8.9",
+            "name": "psr/simple-cache",
+            "version": "1.0.0",
             "source": {
                 "type": "git",
-                "url": "https://github.com/bobthecow/psysh.git",
-                "reference": "58a31cc4404c8f632d8c557bc72056af2d3a83db"
+                "url": "https://github.com/php-fig/simple-cache.git",
+                "reference": "753fa598e8f3b9966c886fe13f370baa45ef0e24"
             },
             "dist": {
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-                "url": "https://api.github.com/repos/bobthecow/psysh/zipball/58a31cc4404c8f632d8c557bc72056af2d3a83db",
-                "reference": "58a31cc4404c8f632d8c557bc72056af2d3a83db",
+                "url": "https://api.github.com/repos/php-fig/simple-cache/zipball/753fa598e8f3b9966c886fe13f370baa45ef0e24",
+                "reference": "753fa598e8f3b9966c886fe13f370baa45ef0e24",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\SimpleCache\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interfaces for simple caching",
+            "keywords": [
+                "cache",
+                "caching",
+                "psr",
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+                "php": "^7.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": "^6.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "3.0.x-dev"
                 }
             },
             "autoload": {
@@ -3166,7 +3596,7 @@
             ],
             "description": "Provides functionality to recursively process PHP variables",
             "homepage": "http://www.github.com/sebastianbergmann/recursion-context",
-            "time": "2016-11-19T07:33:16+00:00"
+            "time": "2017-03-03T06:23:57+00:00"
         },
         {
             "name": "sebastian/resource-operations",
@@ -3254,59 +3684,44 @@
             "time": "2016-10-03T07:35:21+00:00"
         },
         {
-            "name": "symfony/yaml",
-            "version": "v3.3.4",
+            "name": "theseer/tokenizer",
+            "version": "1.1.0",
             "source": {
                 "type": "git",
-                "url": "https://github.com/symfony/yaml.git",
-                "reference": "1f93a8d19b8241617f5074a123e282575b821df8"
+                "url": "https://github.com/theseer/tokenizer.git",
+                "reference": "cb2f008f3f05af2893a87208fe6a6c4985483f8b"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/yaml/zipball/1f93a8d19b8241617f5074a123e282575b821df8",
-                "reference": "1f93a8d19b8241617f5074a123e282575b821df8",
+                "url": "https://api.github.com/repos/theseer/tokenizer/zipball/cb2f008f3f05af2893a87208fe6a6c4985483f8b",
+                "reference": "cb2f008f3f05af2893a87208fe6a6c4985483f8b",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.5.9"
-            },
-            "require-dev": {
-                "symfony/console": "~2.8|~3.0"
-            },
-            "suggest": {
-                "symfony/console": "For validating YAML files using the lint command"
+                "ext-dom": "*",
+                "ext-tokenizer": "*",
+                "ext-xmlwriter": "*",
+                "php": "^7.0"
             },
             "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "3.3-dev"
-                }
-            },
             "autoload": {
-                "psr-4": {
-                    "Symfony\\Component\\Yaml\\": ""
-                },
-                "exclude-from-classmap": [
-                    "/Tests/"
+                "classmap": [
+                    "src/"
                 ]
             },
             "notification-url": "https://packagist.org/downloads/",
             "license": [
-                "MIT"
+                "BSD-3-Clause"
             ],
             "authors": [
                 {
-                    "name": "Fabien Potencier",
-                    "email": "fabien@symfony.com"
-                },
-                {
-                    "name": "Symfony Community",
-                    "homepage": "https://symfony.com/contributors"
+                    "name": "Arne Blankerts",
+                    "email": "arne@blankerts.de",
+                    "role": "Developer"
                 }
             ],
-            "description": "Symfony Yaml Component",
-            "homepage": "https://symfony.com",
-            "time": "2017-06-15T12:58:50+00:00"
+            "description": "A small library for converting tokenized PHP source code into XML and potentially other formats",
+            "time": "2017-04-07T12:08:54+00:00"
         },
         {
             "name": "webmozart/assert",
@@ -3365,7 +3780,7 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": ">=5.6.4"
+        "php": ">=7.0.0"
     },
     "platform-dev": []
 }