diff --git a/composer.lock b/composer.lock
index efdef32..128cb2a 100644
--- a/composer.lock
+++ b/composer.lock
@@ -528,20 +528,21 @@
         },
         {
             "name": "symfony/http-foundation",
-            "version": "v4.2.9",
+            "version": "v4.3.0",
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                 "url": "https://github.com/symfony/http-foundation.git",
-                "reference": "0d37a9bd2c7cbf887c29fee1a3301d74c73851dd"
+                "reference": "e8da078912bed1339f046c3a9488a5cbd0605971"
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             "dist": {
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-                "url": "https://api.github.com/repos/symfony/http-foundation/zipball/0d37a9bd2c7cbf887c29fee1a3301d74c73851dd",
-                "reference": "0d37a9bd2c7cbf887c29fee1a3301d74c73851dd",
+                "url": "https://api.github.com/repos/symfony/http-foundation/zipball/e8da078912bed1339f046c3a9488a5cbd0605971",
+                "reference": "e8da078912bed1339f046c3a9488a5cbd0605971",
                 "shasum": ""
             },
             "require": {
                 "php": "^7.1.3",
+                "symfony/mime": "^4.3",
                 "symfony/polyfill-mbstring": "~1.1"
             },
             "require-dev": {
@@ -551,7 +552,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "4.2-dev"
+                    "dev-master": "4.3-dev"
                 }
             },
             "autoload": {
@@ -578,7 +579,7 @@
             ],
             "description": "Symfony HttpFoundation Component",
             "homepage": "https://symfony.com",
-            "time": "2019-05-27T05:57:45+00:00"
+            "time": "2019-05-29T18:10:42+00:00"
         },
         {
             "name": "symfony/intl",
@@ -655,6 +656,65 @@
             ],
             "time": "2019-05-09T09:19:46+00:00"
         },
+        {
+            "name": "symfony/mime",
+            "version": "v4.3.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/mime.git",
+                "reference": "0b166aee243364cd9de05755d2e9651876090abb"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/mime/zipball/0b166aee243364cd9de05755d2e9651876090abb",
+                "reference": "0b166aee243364cd9de05755d2e9651876090abb",
+                "shasum": ""
+            },
+            "require": {
+                "php": "^7.1.3",
+                "symfony/polyfill-intl-idn": "^1.10",
+                "symfony/polyfill-mbstring": "^1.0"
+            },
+            "require-dev": {
+                "egulias/email-validator": "^2.0",
+                "symfony/dependency-injection": "~3.4|^4.1"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "4.3-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\Mime\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Fabien Potencier",
+                    "email": "fabien@symfony.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "A library to manipulate MIME messages",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "mime",
+                "mime-type"
+            ],
+            "time": "2019-05-22T13:16:28+00:00"
+        },
         {
             "name": "symfony/polyfill-ctype",
             "version": "v1.11.0",
@@ -771,6 +831,68 @@
             ],
             "time": "2019-01-07T19:39:47+00:00"
         },
+        {
+            "name": "symfony/polyfill-intl-idn",
+            "version": "v1.11.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-intl-idn.git",
+                "reference": "c766e95bec706cdd89903b1eda8afab7d7a6b7af"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-intl-idn/zipball/c766e95bec706cdd89903b1eda8afab7d7a6b7af",
+                "reference": "c766e95bec706cdd89903b1eda8afab7d7a6b7af",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3",
+                "symfony/polyfill-mbstring": "^1.3",
+                "symfony/polyfill-php72": "^1.9"
+            },
+            "suggest": {
+                "ext-intl": "For best performance"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.9-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Intl\\Idn\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                },
+                {
+                    "name": "Laurent Bassin",
+                    "email": "laurent@bassin.info"
+                }
+            ],
+            "description": "Symfony polyfill for intl's idn_to_ascii and idn_to_utf8 functions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "idn",
+                "intl",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "time": "2019-03-04T13:44:35+00:00"
+        },
         {
             "name": "symfony/polyfill-mbstring",
             "version": "v1.11.0",
@@ -830,6 +952,61 @@
             ],
             "time": "2019-02-06T07:57:58+00:00"
         },
+        {
+            "name": "symfony/polyfill-php72",
+            "version": "v1.11.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-php72.git",
+                "reference": "ab50dcf166d5f577978419edd37aa2bb8eabce0c"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-php72/zipball/ab50dcf166d5f577978419edd37aa2bb8eabce0c",
+                "reference": "ab50dcf166d5f577978419edd37aa2bb8eabce0c",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.3"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.11-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php72\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "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": "Symfony polyfill backporting some PHP 7.2+ features to lower PHP versions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "time": "2019-02-06T07:57:58+00:00"
+        },
         {
             "name": "symfony/polyfill-php73",
             "version": "v1.11.0",