diff --git a/composer.lock b/composer.lock
index 903d04a..1986e51 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1,10 +1,9 @@
 {
     "_readme": [
         "This file locks the dependencies of your project to a known state",
-        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "hash": "26df7ab49a89bac4bf60a0692f37ef79",
     "content-hash": "920ea39b76aaf12d0fa9de1530107ff0",
     "packages": [
         {
@@ -59,7 +58,7 @@
                 "class",
                 "preload"
             ],
-            "time": "2015-11-09 22:51:51"
+            "time": "2015-11-09T22:51:51+00:00"
         },
         {
             "name": "dnoegel/php-xdg-base-dir",
@@ -92,7 +91,7 @@
                 "MIT"
             ],
             "description": "implementation of xdg base directory specification for php",
-            "time": "2014-10-24 07:27:01"
+            "time": "2014-10-24T07:27:01+00:00"
         },
         {
             "name": "doctrine/inflector",
@@ -159,7 +158,7 @@
                 "singularize",
                 "string"
             ],
-            "time": "2015-11-06 14:35:42"
+            "time": "2015-11-06T14:35:42+00:00"
         },
         {
             "name": "jakub-onderka/php-console-color",
@@ -202,7 +201,7 @@
                     "homepage": "http://www.acci.cz"
                 }
             ],
-            "time": "2014-04-08 15:00:19"
+            "time": "2014-04-08T15:00:19+00:00"
         },
         {
             "name": "jakub-onderka/php-console-highlighter",
@@ -246,7 +245,7 @@
                     "homepage": "http://www.acci.cz/"
                 }
             ],
-            "time": "2015-04-20 18:58:01"
+            "time": "2015-04-20T18:58:01+00:00"
         },
         {
             "name": "jeremeamia/SuperClosure",
@@ -304,7 +303,7 @@
                 "serialize",
                 "tokenizer"
             ],
-            "time": "2015-12-05 17:17:57"
+            "time": "2015-12-05T17:17:57+00:00"
         },
         {
             "name": "laravel/framework",
@@ -432,7 +431,7 @@
                 "framework",
                 "laravel"
             ],
-            "time": "2016-11-01 18:52:00"
+            "time": "2016-11-01T18:52:00+00:00"
         },
         {
             "name": "league/flysystem",
@@ -515,7 +514,7 @@
                 "sftp",
                 "storage"
             ],
-            "time": "2016-10-19 20:38:46"
+            "time": "2016-10-19T20:38:46+00:00"
         },
         {
             "name": "maatwebsite/excel",
@@ -582,7 +581,7 @@
                 "import",
                 "laravel"
             ],
-            "time": "2016-09-15 21:03:21"
+            "time": "2016-09-15T21:03:21+00:00"
         },
         {
             "name": "monolog/monolog",
@@ -660,7 +659,7 @@
                 "logging",
                 "psr-3"
             ],
-            "time": "2016-07-29 03:23:52"
+            "time": "2016-07-29T03:23:52+00:00"
         },
         {
             "name": "mtdowling/cron-expression",
@@ -704,7 +703,7 @@
                 "cron",
                 "schedule"
             ],
-            "time": "2016-01-26 21:23:30"
+            "time": "2016-01-26T21:23:30+00:00"
         },
         {
             "name": "nesbot/carbon",
@@ -751,7 +750,7 @@
                 "datetime",
                 "time"
             ],
-            "time": "2015-11-04 20:07:17"
+            "time": "2015-11-04T20:07:17+00:00"
         },
         {
             "name": "nikic/php-parser",
@@ -802,7 +801,7 @@
                 "parser",
                 "php"
             ],
-            "time": "2016-09-16 12:04:44"
+            "time": "2016-09-16T12:04:44+00:00"
         },
         {
             "name": "paragonie/random_compat",
@@ -850,7 +849,7 @@
                 "pseudorandom",
                 "random"
             ],
-            "time": "2016-10-17 15:23:22"
+            "time": "2016-10-17T15:23:22+00:00"
         },
         {
             "name": "phpoffice/phpexcel",
@@ -907,7 +906,7 @@
                 "xls",
                 "xlsx"
             ],
-            "time": "2015-05-01 07:00:55"
+            "time": "2015-05-01T07:00:55+00:00"
         },
         {
             "name": "psr/log",
@@ -954,7 +953,7 @@
                 "psr",
                 "psr-3"
             ],
-            "time": "2016-10-10 12:19:37"
+            "time": "2016-10-10T12:19:37+00:00"
         },
         {
             "name": "psy/psysh",
@@ -1026,7 +1025,7 @@
                 "interactive",
                 "shell"
             ],
-            "time": "2016-03-09 05:03:14"
+            "time": "2016-03-09T05:03:14+00:00"
         },
         {
             "name": "ramsey/uuid",
@@ -1106,27 +1105,28 @@
                 "identifier",
                 "uuid"
             ],
-            "time": "2016-10-02 15:51:17"
+            "time": "2016-10-02T15:51:17+00:00"
         },
         {
             "name": "swiftmailer/swiftmailer",
-            "version": "v5.4.3",
+            "version": "v5.4.12",
             "source": {
                 "type": "git",
                 "url": "https://github.com/swiftmailer/swiftmailer.git",
-                "reference": "4cc92842069c2bbc1f28daaaf1d2576ec4dfe153"
+                "reference": "181b89f18a90f8925ef805f950d47a7190e9b950"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/swiftmailer/swiftmailer/zipball/4cc92842069c2bbc1f28daaaf1d2576ec4dfe153",
-                "reference": "4cc92842069c2bbc1f28daaaf1d2576ec4dfe153",
+                "url": "https://api.github.com/repos/swiftmailer/swiftmailer/zipball/181b89f18a90f8925ef805f950d47a7190e9b950",
+                "reference": "181b89f18a90f8925ef805f950d47a7190e9b950",
                 "shasum": ""
             },
             "require": {
                 "php": ">=5.3.3"
             },
             "require-dev": {
-                "mockery/mockery": "~0.9.1"
+                "mockery/mockery": "~0.9.1",
+                "symfony/phpunit-bridge": "~3.2"
             },
             "type": "library",
             "extra": {
@@ -1153,13 +1153,18 @@
                 }
             ],
             "description": "Swiftmailer, free feature-rich PHP mailer",
-            "homepage": "http://swiftmailer.org",
+            "homepage": "https://swiftmailer.symfony.com",
             "keywords": [
                 "email",
                 "mail",
                 "mailer"
             ],
-            "time": "2016-07-08 11:51:25"
+            "support": {
+                "issues": "https://github.com/swiftmailer/swiftmailer/issues",
+                "source": "https://github.com/swiftmailer/swiftmailer/tree/v5.4.12"
+            },
+            "abandoned": "symfony/mailer",
+            "time": "2018-07-31T09:26:32+00:00"
         },
         {
             "name": "symfony/console",
@@ -1220,7 +1225,7 @@
             ],
             "description": "Symfony Console Component",
             "homepage": "https://symfony.com",
-            "time": "2016-10-06 01:44:51"
+            "time": "2016-10-06T01:44:51+00:00"
         },
         {
             "name": "symfony/css-selector",
@@ -1273,7 +1278,7 @@
             ],
             "description": "Symfony CssSelector Component",
             "homepage": "https://symfony.com",
-            "time": "2016-09-06 11:02:40"
+            "time": "2016-09-06T11:02:40+00:00"
         },
         {
             "name": "symfony/debug",
@@ -1330,7 +1335,7 @@
             ],
             "description": "Symfony Debug Component",
             "homepage": "https://symfony.com",
-            "time": "2016-09-06 11:02:40"
+            "time": "2016-09-06T11:02:40+00:00"
         },
         {
             "name": "symfony/event-dispatcher",
@@ -1390,7 +1395,7 @@
             ],
             "description": "Symfony EventDispatcher Component",
             "homepage": "https://symfony.com",
-            "time": "2016-10-13 06:28:43"
+            "time": "2016-10-13T06:28:43+00:00"
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         {
             "name": "symfony/finder",
@@ -1439,7 +1444,7 @@
             ],
             "description": "Symfony Finder Component",
             "homepage": "https://symfony.com",
-            "time": "2016-09-28 00:11:12"
+            "time": "2016-09-28T00:11:12+00:00"
         },
         {
             "name": "symfony/http-foundation",
@@ -1492,7 +1497,7 @@
             ],
             "description": "Symfony HttpFoundation Component",
             "homepage": "https://symfony.com",
-            "time": "2016-10-24 15:52:44"
+            "time": "2016-10-24T15:52:44+00:00"
         },
         {
             "name": "symfony/http-kernel",
@@ -1574,7 +1579,7 @@
             ],
             "description": "Symfony HttpKernel Component",
             "homepage": "https://symfony.com",
-            "time": "2016-10-27 02:38:31"
+            "time": "2016-10-27T02:38:31+00:00"
         },
         {
             "name": "symfony/polyfill-mbstring",
@@ -1633,7 +1638,7 @@
                 "portable",
                 "shim"
             ],
-            "time": "2016-05-18 14:26:46"
+            "time": "2016-05-18T14:26:46+00:00"
         },
         {
             "name": "symfony/polyfill-php56",
@@ -1689,7 +1694,7 @@
                 "portable",
                 "shim"
             ],
-            "time": "2016-05-18 14:26:46"
+            "time": "2016-05-18T14:26:46+00:00"
         },
         {
             "name": "symfony/polyfill-util",
@@ -1741,7 +1746,7 @@
                 "polyfill",
                 "shim"
             ],
-            "time": "2016-05-18 14:26:46"
+            "time": "2016-05-18T14:26:46+00:00"
         },
         {
             "name": "symfony/process",
@@ -1790,7 +1795,7 @@
             ],
             "description": "Symfony Process Component",
             "homepage": "https://symfony.com",
-            "time": "2016-09-29 14:13:09"
+            "time": "2016-09-29T14:13:09+00:00"
         },
         {
             "name": "symfony/routing",
@@ -1865,7 +1870,7 @@
                 "uri",
                 "url"
             ],
-            "time": "2016-08-16 14:58:24"
+            "time": "2016-08-16T14:58:24+00:00"
         },
         {
             "name": "symfony/translation",
@@ -1929,7 +1934,7 @@
             ],
             "description": "Symfony Translation Component",
             "homepage": "https://symfony.com",
-            "time": "2016-10-18 04:30:12"
+            "time": "2016-10-18T04:30:12+00:00"
         },
         {
             "name": "symfony/var-dumper",
@@ -1992,7 +1997,7 @@
                 "debug",
                 "dump"
             ],
-            "time": "2016-10-18 15:46:07"
+            "time": "2016-10-18T15:46:07+00:00"
         },
         {
             "name": "tijsverkoyen/css-to-inline-styles",
@@ -2039,7 +2044,7 @@
             ],
             "description": "CssToInlineStyles is a class that enables you to convert HTML-pages/files into HTML-pages/files with inline styles. This is very useful when you're sending emails.",
             "homepage": "https://github.com/tijsverkoyen/CssToInlineStyles",
-            "time": "2015-12-08 16:14:14"
+            "time": "2015-12-08T16:14:14+00:00"
         },
         {
             "name": "vlucas/phpdotenv",
@@ -2089,7 +2094,7 @@
                 "env",
                 "environment"
             ],
-            "time": "2016-09-01 10:05:43"
+            "time": "2016-09-01T10:05:43+00:00"
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     "packages-dev": [
@@ -2145,7 +2150,7 @@
                 "constructor",
                 "instantiate"
             ],
-            "time": "2015-06-14 21:17:01"
+            "time": "2015-06-14T21:17:01+00:00"
         },
         {
             "name": "fzaninotto/faker",
@@ -2193,7 +2198,7 @@
                 "faker",
                 "fixtures"
             ],
-            "time": "2016-04-29 12:21:54"
+            "time": "2016-04-29T12:21:54+00:00"
         },
         {
             "name": "hamcrest/hamcrest-php",
@@ -2238,7 +2243,7 @@
             "keywords": [
                 "test"
             ],
-            "time": "2015-05-11 14:41:42"
+            "time": "2015-05-11T14:41:42+00:00"
         },
         {
             "name": "mockery/mockery",
@@ -2303,7 +2308,7 @@
                 "test double",
                 "testing"
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-            "time": "2016-05-22 21:52:33"
+            "time": "2016-05-22T21:52:33+00:00"
         },
         {
             "name": "myclabs/deep-copy",
@@ -2345,7 +2350,7 @@
                 "object",
                 "object graph"
             ],
-            "time": "2016-10-31 17:19:45"
+            "time": "2016-10-31T17:19:45+00:00"
         },
         {
             "name": "phpdocumentor/reflection-common",
@@ -2399,7 +2404,7 @@
                 "reflection",
                 "static analysis"
             ],
-            "time": "2015-12-27 11:43:31"
+            "time": "2015-12-27T11:43:31+00:00"
         },
         {
             "name": "phpdocumentor/reflection-docblock",
@@ -2444,7 +2449,7 @@
                 }
             ],
             "description": "With this component, a library can provide support for annotations via DocBlocks or otherwise retrieve information that is embedded in a DocBlock.",
-            "time": "2016-09-30 07:12:33"
+            "time": "2016-09-30T07:12:33+00:00"
         },
         {
             "name": "phpdocumentor/type-resolver",
@@ -2491,7 +2496,7 @@
                     "email": "me@mikevanriel.com"
                 }
             ],
-            "time": "2016-06-10 07:14:17"
+            "time": "2016-06-10T07:14:17+00:00"
         },
         {
             "name": "phpspec/prophecy",
@@ -2553,7 +2558,7 @@
                 "spy",
                 "stub"
             ],
-            "time": "2016-06-07 08:13:47"
+            "time": "2016-06-07T08:13:47+00:00"
         },
         {
             "name": "phpunit/php-code-coverage",
@@ -2616,7 +2621,7 @@
                 "testing",
                 "xunit"
             ],
-            "time": "2016-11-01 05:06:24"
+            "time": "2016-11-01T05:06:24+00:00"
         },
         {
             "name": "phpunit/php-file-iterator",
@@ -2663,7 +2668,7 @@
                 "filesystem",
                 "iterator"
             ],
-            "time": "2015-06-21 13:08:43"
+            "time": "2015-06-21T13:08:43+00:00"
         },
         {
             "name": "phpunit/php-text-template",
@@ -2704,7 +2709,7 @@
             "keywords": [
                 "template"
             ],
-            "time": "2015-06-21 13:50:34"
+            "time": "2015-06-21T13:50:34+00:00"
         },
         {
             "name": "phpunit/php-timer",
@@ -2748,7 +2753,7 @@
             "keywords": [
                 "timer"
             ],
-            "time": "2016-05-12 18:03:57"
+            "time": "2016-05-12T18:03:57+00:00"
         },
         {
             "name": "phpunit/php-token-stream",
@@ -2797,7 +2802,7 @@
             "keywords": [
                 "tokenizer"
             ],
-            "time": "2015-09-15 10:49:45"
+            "time": "2015-09-15T10:49:45+00:00"
         },
         {
             "name": "phpunit/phpunit",
@@ -2879,7 +2884,7 @@
                 "testing",
                 "xunit"
             ],
-            "time": "2016-10-25 07:40:25"
+            "time": "2016-10-25T07:40:25+00:00"
         },
         {
             "name": "phpunit/phpunit-mock-objects",
@@ -2938,7 +2943,7 @@
                 "mock",
                 "xunit"
             ],
-            "time": "2016-10-09 07:01:45"
+            "time": "2016-10-09T07:01:45+00:00"
         },
         {
             "name": "sebastian/code-unit-reverse-lookup",
@@ -2983,7 +2988,7 @@
             ],
             "description": "Looks up which function or method a line of code belongs to",
             "homepage": "https://github.com/sebastianbergmann/code-unit-reverse-lookup/",
-            "time": "2016-02-13 06:45:14"
+            "time": "2016-02-13T06:45:14+00:00"
         },
         {
             "name": "sebastian/comparator",
@@ -3047,7 +3052,7 @@
                 "compare",
                 "equality"
             ],
-            "time": "2015-07-26 15:48:44"
+            "time": "2015-07-26T15:48:44+00:00"
         },
         {
             "name": "sebastian/diff",
@@ -3099,7 +3104,7 @@
             "keywords": [
                 "diff"
             ],
-            "time": "2015-12-08 07:14:41"
+            "time": "2015-12-08T07:14:41+00:00"
         },
         {
             "name": "sebastian/environment",
@@ -3149,7 +3154,7 @@
                 "environment",
                 "hhvm"
             ],
-            "time": "2016-08-18 05:49:44"
+            "time": "2016-08-18T05:49:44+00:00"
         },
         {
             "name": "sebastian/exporter",
@@ -3216,7 +3221,7 @@
                 "export",
                 "exporter"
             ],
-            "time": "2016-06-17 09:04:28"
+            "time": "2016-06-17T09:04:28+00:00"
         },
         {
             "name": "sebastian/global-state",
@@ -3267,7 +3272,7 @@
             "keywords": [
                 "global state"
             ],
-            "time": "2015-10-12 03:26:01"
+            "time": "2015-10-12T03:26:01+00:00"
         },
         {
             "name": "sebastian/object-enumerator",
@@ -3313,7 +3318,7 @@
             ],
             "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"
+            "time": "2016-01-28T13:25:10+00:00"
         },
         {
             "name": "sebastian/recursion-context",
@@ -3366,7 +3371,7 @@
             ],
             "description": "Provides functionality to recursively process PHP variables",
             "homepage": "http://www.github.com/sebastianbergmann/recursion-context",
-            "time": "2015-11-11 19:50:13"
+            "time": "2015-11-11T19:50:13+00:00"
         },
         {
             "name": "sebastian/resource-operations",
@@ -3408,7 +3413,7 @@
             ],
             "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"
+            "time": "2015-07-28T20:34:47+00:00"
         },
         {
             "name": "sebastian/version",
@@ -3451,7 +3456,7 @@
             ],
             "description": "Library that helps with managing the version number of Git-hosted PHP projects",
             "homepage": "https://github.com/sebastianbergmann/version",
-            "time": "2016-02-04 12:56:52"
+            "time": "2016-02-04T12:56:52+00:00"
         },
         {
             "name": "symfony/dom-crawler",
@@ -3507,7 +3512,7 @@
             ],
             "description": "Symfony DomCrawler Component",
             "homepage": "https://symfony.com",
-            "time": "2016-10-18 15:46:07"
+            "time": "2016-10-18T15:46:07+00:00"
         },
         {
             "name": "symfony/yaml",
@@ -3556,7 +3561,7 @@
             ],
             "description": "Symfony Yaml Component",
             "homepage": "https://symfony.com",
-            "time": "2016-10-24 18:41:13"
+            "time": "2016-10-24T18:41:13+00:00"
         },
         {
             "name": "webmozart/assert",
@@ -3606,7 +3611,7 @@
                 "check",
                 "validate"
             ],
-            "time": "2016-08-09 15:02:57"
+            "time": "2016-08-09T15:02:57+00:00"
         }
     ],
     "aliases": [],
@@ -3617,5 +3622,6 @@
     "platform": {
         "php": ">=5.6.4"
     },
-    "platform-dev": []
+    "platform-dev": [],
+    "plugin-api-version": "2.6.0"
 }