diff --git a/composer.json b/composer.json
index f7dd190..bb8ed61 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
     },
     "require": {
         "php": ">=5.6",
-        "symfony/symfony": "3.2.*",
+        "symfony/symfony": "3.4.*",
         "doctrine/orm": "^2.4.8",
         "doctrine/doctrine-bundle": "^1.6",
         "symfony/swiftmailer-bundle": "^2.3",
diff --git a/composer.lock b/composer.lock
index 9bdca9d..2b8722d 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1,10 +1,10 @@
 {
     "_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"
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-    "content-hash": "fbc13cfb69b7af8e9f7c3d0a3e650850",
+    "content-hash": "94c1943b492357aa59ca844c42bb060d",
     "packages": [
         {
             "name": "composer/ca-bundle",
@@ -128,6 +128,10 @@
                 "docblock",
                 "parser"
             ],
+            "support": {
+                "issues": "https://github.com/doctrine/annotations/issues",
+                "source": "https://github.com/doctrine/annotations/tree/v1.4.0"
+            },
             "time": "2017-02-24T16:22:25+00:00"
         },
         {
@@ -198,6 +202,10 @@
                 "cache",
                 "caching"
             ],
+            "support": {
+                "issues": "https://github.com/doctrine/cache/issues",
+                "source": "https://github.com/doctrine/cache/tree/1.6.x"
+            },
             "time": "2017-07-22T12:49:21+00:00"
         },
         {
@@ -265,6 +273,10 @@
                 "collections",
                 "iterator"
             ],
+            "support": {
+                "issues": "https://github.com/doctrine/collections/issues",
+                "source": "https://github.com/doctrine/collections/tree/master"
+            },
             "time": "2017-01-03T10:49:41+00:00"
         },
         {
@@ -338,6 +350,10 @@
                 "persistence",
                 "spl"
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+            "support": {
+                "issues": "https://github.com/doctrine/common/issues",
+                "source": "https://github.com/doctrine/common/tree/v2.7.3"
+            },
             "time": "2017-07-22T08:35:12+00:00"
         },
         {
@@ -765,6 +781,9 @@
                 "singularize",
                 "string"
             ],
+            "support": {
+                "source": "https://github.com/doctrine/inflector/tree/master"
+            },
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         },
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@@ -823,21 +842,24 @@
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-            "version": "v1.0.1",
+            "version": "1.0.2",
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                 "url": "https://github.com/doctrine/lexer.git",
-                "reference": "83893c552fd2045dd78aef794c31e694c37c0b8c"
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-                "reference": "83893c552fd2045dd78aef794c31e694c37c0b8c",
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+            },
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@@ -845,8 +867,8 @@
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-                    "Doctrine\\Common\\Lexer\\": "lib/"
+                "psr-4": {
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@@ -867,13 +889,20 @@
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-            "description": "Base library for a lexer that can be used in Top-Down, Recursive Descent Parsers.",
-            "homepage": "http://www.doctrine-project.org",
+            "description": "PHP Doctrine Lexer parser library that can be used in Top-Down, Recursive Descent Parsers.",
+            "homepage": "https://www.doctrine-project.org/projects/lexer.html",
             "keywords": [
+                "annotations",
+                "docblock",
                 "lexer",
-                "parser"
+                "parser",
+                "php"
             ],
-            "time": "2014-09-09T13:34:57+00:00"
+            "support": {
+                "issues": "https://github.com/doctrine/lexer/issues",
+                "source": "https://github.com/doctrine/lexer/tree/1.0.2"
+            },
+            "time": "2019-06-08T11:03:04+00:00"
         },
         {
             "name": "doctrine/orm",
@@ -951,6 +980,67 @@
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             "time": "2017-12-17T02:57:51+00:00"
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+        {
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+            "version": "1.1.2",
+            "source": {
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+                "url": "https://github.com/php-fig/link-util.git",
+                "reference": "5d7b8d04ed3393b4b59968ca1e906fb7186d81e8"
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+            },
+            "provide": {
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+            },
+            "require-dev": {
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+                "squizlabs/php_codesniffer": "^2.3.1"
+            },
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+            "extra": {
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+                    "dev-master": "1.0.x-dev"
+                }
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+            "autoload": {
+                "psr-4": {
+                    "Fig\\Link\\": "src/"
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+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "https://www.php-fig.org/"
+                }
+            ],
+            "description": "Common utility implementations for HTTP links",
+            "keywords": [
+                "http",
+                "http-link",
+                "link",
+                "psr",
+                "psr-13",
+                "rest"
+            ],
+            "support": {
+                "issues": "https://github.com/php-fig/link-util/issues",
+                "source": "https://github.com/php-fig/link-util/tree/1.1.2"
+            },
+            "time": "2021-02-03T23:36:04+00:00"
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@@ -1189,16 +1279,16 @@
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+            "version": "1.27.1",
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-                "reference": "fd8c787753b3a2ad11bc60c063cff1358a32a3b4"
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@@ -1212,11 +1302,10 @@
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                 "php-amqplib/php-amqplib": "~2.4",
                 "php-console/php-console": "^3.1.3",
+                "phpstan/phpstan": "^0.12.59",
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@@ -1235,11 +1324,6 @@
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@@ -1263,7 +1347,21 @@
                 "logging",
                 "psr-3"
             ],
-            "time": "2017-06-19T01:22:40+00:00"
+            "support": {
+                "issues": "https://github.com/Seldaek/monolog/issues",
+                "source": "https://github.com/Seldaek/monolog/tree/1.27.1"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/Seldaek",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/monolog/monolog",
+                    "type": "tidelift"
+                }
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+            "time": "2022-06-09T08:53:42+00:00"
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@@ -1318,23 +1416,23 @@
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-            "version": "v2.0.15",
+            "version": "v2.0.21",
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-                "reference": "10bcb46e8f3d365170f6de9d05245aa066b81f09"
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-                "reference": "10bcb46e8f3d365170f6de9d05245aa066b81f09",
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             },
             "require-dev": {
-                "phpunit/phpunit": "4.*|5.*"
+                "phpunit/phpunit": "*"
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                 "ext-libsodium": "Provides a modern crypto API that can be used to generate random bytes."
@@ -1363,7 +1461,12 @@
                 "pseudorandom",
                 "random"
             ],
-            "time": "2018-06-08T15:26:40+00:00"
+            "support": {
+                "email": "info@paragonie.com",
+                "issues": "https://github.com/paragonie/random_compat/issues",
+                "source": "https://github.com/paragonie/random_compat"
+            },
+            "time": "2022-02-16T17:07:03+00:00"
         },
         {
             "name": "psr/cache",
@@ -1409,20 +1512,128 @@
                 "psr",
                 "psr-6"
             ],
+            "support": {
+                "source": "https://github.com/php-fig/cache/tree/master"
+            },
             "time": "2016-08-06T20:24:11+00:00"
         },
+        {
+            "name": "psr/container",
+            "version": "1.0.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/container.git",
+                "reference": "b7ce3b176482dbbc1245ebf52b181af44c2cf55f"
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+            "extra": {
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+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
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+            "authors": [
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+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
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+            "description": "Common Container Interface (PHP FIG PSR-11)",
+            "homepage": "https://github.com/php-fig/container",
+            "keywords": [
+                "PSR-11",
+                "container",
+                "container-interface",
+                "container-interop",
+                "psr"
+            ],
+            "support": {
+                "issues": "https://github.com/php-fig/container/issues",
+                "source": "https://github.com/php-fig/container/tree/master"
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+            "time": "2017-02-14T16:28:37+00:00"
+        },
+        {
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+            "version": "1.0.0",
+            "source": {
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+                "url": "https://github.com/php-fig/link.git",
+                "reference": "eea8e8662d5cd3ae4517c9b864493f59fca95562"
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+                    "Psr\\Link\\": "src/"
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+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
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+            "authors": [
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+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interfaces for HTTP links",
+            "keywords": [
+                "http",
+                "http-link",
+                "link",
+                "psr",
+                "psr-13",
+                "rest"
+            ],
+            "support": {
+                "source": "https://github.com/php-fig/link/tree/master"
+            },
+            "time": "2016-10-28T16:06:13+00:00"
+        },
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-            "version": "1.0.2",
+            "version": "1.1.4",
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                 "url": "https://github.com/php-fig/log.git",
-                "reference": "4ebe3a8bf773a19edfe0a84b6585ba3d401b724d"
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-                "reference": "4ebe3a8bf773a19edfe0a84b6585ba3d401b724d",
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@@ -1431,7 +1642,7 @@
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@@ -1446,7 +1657,7 @@
             "authors": [
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                     "name": "PHP-FIG",
-                    "homepage": "http://www.php-fig.org/"
+                    "homepage": "https://www.php-fig.org/"
                 }
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             "description": "Common interface for logging libraries",
@@ -1456,7 +1667,61 @@
                 "psr",
                 "psr-3"
             ],
-            "time": "2016-10-10T12:19:37+00:00"
+            "support": {
+                "source": "https://github.com/php-fig/log/tree/1.1.4"
+            },
+            "time": "2021-05-03T11:20:27+00:00"
+        },
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+            "version": "1.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/simple-cache.git",
+                "reference": "408d5eafb83c57f6365a3ca330ff23aa4a5fa39b"
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+                "shasum": ""
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+            "extra": {
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+                    "dev-master": "1.0.x-dev"
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+            "autoload": {
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+                    "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",
+                "psr-16",
+                "simple-cache"
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+            "support": {
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+            "time": "2017-10-23T01:57:42+00:00"
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             "name": "sasedev/mpdf-bundle",
@@ -1841,23 +2106,179 @@
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             "time": "2017-01-02T19:04:26+00:00"
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+        {
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+            "version": "v1.19.0",
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+                "url": "https://github.com/symfony/polyfill-apcu.git",
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+                "shasum": ""
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+            "extra": {
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+                    "dev-main": "1.19-dev"
+                },
+                "thanks": {
+                    "name": "symfony/polyfill",
+                    "url": "https://github.com/symfony/polyfill"
+                }
+            },
+            "autoload": {
+                "files": [
+                    "bootstrap.php"
+                ],
+                "psr-4": {
+                    "Symfony\\Polyfill\\Apcu\\": ""
+                }
+            },
+            "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 apcu_* functions to lower PHP versions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "apcu",
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+                "polyfill",
+                "portable",
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+                },
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+                "url": "https://github.com/symfony/polyfill-ctype.git",
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             "extra": {
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-                    "dev-master": "1.35-dev"
+                    "dev-master": "1.42-dev"
                 }
             },
             "autoload": {
@@ -2375,23 +2929,26 @@
                     "homepage": "http://fabien.potencier.org",
                     "role": "Lead Developer"
                 },
+                {
+                    "name": "Twig Team",
+                    "role": "Contributors"
+                },
                 {
                     "name": "Armin Ronacher",
                     "email": "armin.ronacher@active-4.com",
                     "role": "Project Founder"
-                },
-                {
-                    "name": "Twig Team",
-                    "homepage": "http://twig.sensiolabs.org/contributors",
-                    "role": "Contributors"
                 }
             ],
             "description": "Twig, the flexible, fast, and secure template language for PHP",
-            "homepage": "http://twig.sensiolabs.org",
+            "homepage": "https://twig.symfony.com",
             "keywords": [
                 "templating"
             ],
-            "time": "2018-03-20T04:25:58+00:00"
+            "support": {
+                "issues": "https://github.com/twigphp/Twig/issues",
+                "source": "https://github.com/twigphp/Twig/tree/1.x"
+            },
+            "time": "2020-02-11T05:59:23+00:00"
         }
     ],
     "packages-dev": [
@@ -2524,5 +3081,6 @@
     "platform": {
         "php": ">=5.6"
     },
-    "platform-dev": []
+    "platform-dev": [],
+    "plugin-api-version": "2.3.0"
 }