diff --git a/composer.json b/composer.json
old mode 100755
new mode 100644
index 428c41b..37fef3b
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
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-        "symfony/symfony": "3.0.*",
+        "symfony/symfony": "3.4.*",
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         "doctrine/doctrine-bundle": "^1.6",
         "doctrine/doctrine-cache-bundle": "^1.2",
diff --git a/composer.lock b/composer.lock
index c3e5e1f..2d259b3 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
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+    "content-hash": "b649485b249ae5867baf0aa88578211f",
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@@ -143,35 +143,35 @@
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-                "php": ">=5.3.2"
+                "php": "^5.6 || ^7.0"
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             "require-dev": {
                 "doctrine/cache": "1.*",
-                "phpunit/phpunit": "4.*"
+                "phpunit/phpunit": "^5.7"
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+                    "dev-master": "1.4.x-dev"
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+                "psr-4": {
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@@ -207,20 +207,24 @@
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-            "time": "2015-08-31T12:32:49+00:00"
+            "support": {
+                "issues": "https://github.com/doctrine/annotations/issues",
+                "source": "https://github.com/doctrine/annotations/tree/v1.4.0"
+            },
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-            "version": "v1.6.0",
+            "version": "v1.6.2",
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@@ -277,32 +281,37 @@
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-            "time": "2015-12-31T16:37:02+00:00"
+            "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"
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-            "version": "v1.3.0",
+            "version": "v1.4.0",
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                 "url": "https://github.com/doctrine/collections.git",
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+                "php": "^5.6 || ^7.0"
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+                "doctrine/coding-standard": "~0.1@dev",
+                "phpunit/phpunit": "^5.7"
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@@ -343,20 +352,24 @@
                 "collections",
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-            "time": "2015-04-14T22:21:58+00:00"
+            "support": {
+                "issues": "https://github.com/doctrine/collections/issues",
+                "source": "https://github.com/doctrine/collections/tree/master"
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+            "time": "2017-01-03T10:49:41+00:00"
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@@ -416,7 +429,11 @@
                 "persistence",
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+            "support": {
+                "issues": "https://github.com/doctrine/common/issues",
+                "source": "https://github.com/doctrine/common/tree/2.6"
+            },
+            "time": "2016-11-30T16:50:46+00:00"
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             "name": "doctrine/dbal",
@@ -723,6 +740,9 @@
                 "singularize",
                 "string"
             ],
+            "support": {
+                "source": "https://github.com/doctrine/inflector/tree/master"
+            },
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@@ -781,21 +801,24 @@
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+            "version": "1.0.2",
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@@ -803,8 +826,8 @@
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@@ -825,13 +848,20 @@
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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",
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-                "parser"
+                "parser",
+                "php"
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-            "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"
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@@ -1006,6 +1036,67 @@
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+            "version": "1.1.2",
+            "source": {
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+                "url": "https://github.com/php-fig/link-util.git",
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+                "psr/link": "~1.0@dev"
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+            "provide": {
+                "psr/link-implementation": "1.0"
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+            "require-dev": {
+                "phpunit/phpunit": "^5.1",
+                "squizlabs/php_codesniffer": "^2.3.1"
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+            "extra": {
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+            "autoload": {
+                "psr-4": {
+                    "Fig\\Link\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
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+            ],
+            "authors": [
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+                    "name": "PHP-FIG",
+                    "homepage": "https://www.php-fig.org/"
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+            ],
+            "description": "Common utility implementations for HTTP links",
+            "keywords": [
+                "http",
+                "http-link",
+                "link",
+                "psr",
+                "psr-13",
+                "rest"
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+            "support": {
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+            "time": "2021-02-03T23:36:04+00:00"
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@@ -1381,16 +1472,16 @@
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@@ -1401,17 +1492,16 @@
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                 "ruflin/elastica": ">=0.90 <3.0",
                 "sentry/sentry": "^0.13",
-                "swiftmailer/swiftmailer": "~5.3"
+                "swiftmailer/swiftmailer": "^5.3|^6.0"
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             "suggest": {
                 "aws/aws-sdk-php": "Allow sending log messages to AWS services like DynamoDB",
@@ -1427,11 +1517,6 @@
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@@ -1455,7 +1540,21 @@
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                 "psr-3"
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-            "time": "2016-07-29T03:23:52+00:00"
+            "support": {
+                "issues": "https://github.com/Seldaek/monolog/issues",
+                "source": "https://github.com/Seldaek/monolog/tree/1.26.0"
+            },
+            "funding": [
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+                    "url": "https://github.com/Seldaek",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/monolog/monolog",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2020-12-14T12:56:38+00:00"
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@@ -1514,16 +1613,16 @@
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             "name": "paragonie/random_compat",
-            "version": "v2.0.2",
+            "version": "v2.0.20",
             "source": {
                 "type": "git",
                 "url": "https://github.com/paragonie/random_compat.git",
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@@ -1555,10 +1654,118 @@
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             "keywords": [
                 "csprng",
+                "polyfill",
                 "pseudorandom",
                 "random"
             ],
-            "time": "2016-04-03T06:00:07+00:00"
+            "support": {
+                "email": "info@paragonie.com",
+                "issues": "https://github.com/paragonie/random_compat/issues",
+                "source": "https://github.com/paragonie/random_compat"
+            },
+            "time": "2021-04-17T09:33:01+00:00"
+        },
+        {
+            "name": "psr/cache",
+            "version": "1.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/cache.git",
+                "reference": "d11b50ad223250cf17b86e38383413f5a6764bf8"
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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",
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+                "container-interface",
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+                "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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@@ -1611,23 +1818,83 @@
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+            "autoload": {
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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/"
+                }
+            ],
+            "description": "Common interfaces for HTTP links",
+            "keywords": [
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+                "psr/cache-implementation": "1.0",
+                "psr/container-implementation": "1.0",
+                "psr/log-implementation": "1.0",
+                "psr/simple-cache-implementation": "1.0"
             },
             "replace": {
                 "symfony/asset": "self.version",
                 "symfony/browser-kit": "self.version",
+                "symfony/cache": "self.version",
                 "symfony/class-loader": "self.version",
                 "symfony/config": "self.version",
                 "symfony/console": "self.version",
@@ -2344,6 +2943,7 @@
                 "symfony/dependency-injection": "self.version",
                 "symfony/doctrine-bridge": "self.version",
                 "symfony/dom-crawler": "self.version",
+                "symfony/dotenv": "self.version",
                 "symfony/event-dispatcher": "self.version",
                 "symfony/expression-language": "self.version",
                 "symfony/filesystem": "self.version",
@@ -2352,8 +2952,10 @@
                 "symfony/framework-bundle": "self.version",
                 "symfony/http-foundation": "self.version",
                 "symfony/http-kernel": "self.version",
+                "symfony/inflector": "self.version",
                 "symfony/intl": "self.version",
                 "symfony/ldap": "self.version",
+                "symfony/lock": "self.version",
                 "symfony/monolog-bridge": "self.version",
                 "symfony/options-resolver": "self.version",
                 "symfony/process": "self.version",
@@ -2375,25 +2977,32 @@
                 "symfony/twig-bundle": "self.version",
                 "symfony/validator": "self.version",
                 "symfony/var-dumper": "self.version",
+                "symfony/web-link": "self.version",
                 "symfony/web-profiler-bundle": "self.version",
+                "symfony/web-server-bundle": "self.version",
+                "symfony/workflow": "self.version",
                 "symfony/yaml": "self.version"
             },
             "require-dev": {
+                "cache/integration-tests": "dev-master",
+                "doctrine/annotations": "~1.0",
+                "doctrine/cache": "~1.6",
                 "doctrine/data-fixtures": "1.0.*",
                 "doctrine/dbal": "~2.4",
                 "doctrine/doctrine-bundle": "~1.4",
                 "doctrine/orm": "~2.4,>=2.4.5",
-                "egulias/email-validator": "~1.2,>=1.2.1",
+                "egulias/email-validator": "~1.2,>=1.2.8|~2.0",
                 "monolog/monolog": "~1.11",
                 "ocramius/proxy-manager": "~0.4|~1.0|~2.0",
-                "phpdocumentor/reflection": "^1.0.7",
-                "symfony/polyfill-apcu": "~1.1",
+                "phpdocumentor/reflection-docblock": "^3.0|^4.0",
+                "predis/predis": "~1.0",
+                "symfony/phpunit-bridge": "^3.4.31|^4.3.4|~5.0",
                 "symfony/security-acl": "~2.8|~3.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "3.0-dev"
+                    "dev-master": "3.4-dev"
                 }
             },
             "autoload": {
@@ -2401,7 +3010,6 @@
                     "Symfony\\Bridge\\Doctrine\\": "src/Symfony/Bridge/Doctrine/",
                     "Symfony\\Bridge\\Monolog\\": "src/Symfony/Bridge/Monolog/",
                     "Symfony\\Bridge\\ProxyManager\\": "src/Symfony/Bridge/ProxyManager/",
-                    "Symfony\\Bridge\\Swiftmailer\\": "src/Symfony/Bridge/Swiftmailer/",
                     "Symfony\\Bridge\\Twig\\": "src/Symfony/Bridge/Twig/",
                     "Symfony\\Bundle\\": "src/Symfony/Bundle/",
                     "Symfony\\Component\\": "src/Symfony/Component/"
@@ -2432,38 +3040,46 @@
             "keywords": [
                 "framework"
             ],
-            "time": "2016-07-30T09:10:53+00:00"
+            "support": {
+                "issues": "https://github.com/symfony/symfony/issues",
+                "source": "https://github.com/symfony/symfony/tree/v3.4.35"
+            },
+            "time": "2019-11-13T08:45:05+00:00"
         },
         {
             "name": "twig/twig",
-            "version": "v1.24.1",
+            "version": "v1.42.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/twigphp/Twig.git",
-                "reference": "3566d311a92aae4deec6e48682dc5a4528c4a512"
+                "reference": "87b2ea9d8f6fd014d0621ca089bb1b3769ea3f8e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/twigphp/Twig/zipball/3566d311a92aae4deec6e48682dc5a4528c4a512",
-                "reference": "3566d311a92aae4deec6e48682dc5a4528c4a512",
+                "url": "https://api.github.com/repos/twigphp/Twig/zipball/87b2ea9d8f6fd014d0621ca089bb1b3769ea3f8e",
+                "reference": "87b2ea9d8f6fd014d0621ca089bb1b3769ea3f8e",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.2.7"
+                "php": ">=5.5.0",
+                "symfony/polyfill-ctype": "^1.8"
             },
             "require-dev": {
-                "symfony/debug": "~2.7",
-                "symfony/phpunit-bridge": "~2.7"
+                "psr/container": "^1.0",
+                "symfony/phpunit-bridge": "^4.4|^5.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.24-dev"
+                    "dev-master": "1.42-dev"
                 }
             },
             "autoload": {
                 "psr-0": {
                     "Twig_": "lib/"
+                },
+                "psr-4": {
+                    "Twig\\": "src/"
                 }
             },
             "notification-url": "https://packagist.org/downloads/",
@@ -2477,23 +3093,26 @@
                     "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": "2016-05-30T09:11:59+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": [