diff --git a/composer.json b/composer.json
index f2833cc..f1036b7 100644
--- a/composer.json
+++ b/composer.json
@@ -32,7 +32,7 @@
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         "symfony/polyfill-apcu": "^1.0",
         "symfony/swiftmailer-bundle": "^2.3.10",
-        "symfony/symfony": "3.3.*",
+        "symfony/symfony": "3.4.*",
         "twig/extensions": "^1.5",
         "twig/twig": "^1.0||^2.0"
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diff --git a/composer.lock b/composer.lock
index c5f17e4..caa68db 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1,11 +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",
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-    "content-hash": "94fbc612a596ee9acf5bb34159f8a1c9",
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@@ -64,7 +63,7 @@
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-            "time": "2017-03-06 11:59:08"
+            "time": "2017-03-06T11:59:08+00:00"
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@@ -132,20 +131,24 @@
                 "docblock",
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-            "time": "2017-02-24 16:22:25"
+            "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"
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+            "version": "v1.6.2",
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@@ -202,7 +205,11 @@
                 "cache",
                 "caching"
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-            "time": "2016-10-29 11:16:17"
+            "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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@@ -269,20 +276,24 @@
                 "collections",
                 "iterator"
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-            "time": "2017-01-03 10:49:41"
+            "support": {
+                "issues": "https://github.com/doctrine/collections/issues",
+                "source": "https://github.com/doctrine/collections/tree/master"
+            },
+            "time": "2017-01-03T10:49:41+00:00"
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+            "version": "v2.7.3",
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@@ -342,7 +353,11 @@
                 "persistence",
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-            "time": "2017-01-13 14:02:13"
+            "support": {
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+                "source": "https://github.com/doctrine/common/tree/v2.7.3"
+            },
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@@ -413,7 +428,7 @@
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-            "time": "2017-02-08 12:53:47"
+            "time": "2017-02-08T12:53:47+00:00"
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@@ -494,7 +509,7 @@
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-            "time": "2017-05-18 08:15:18"
+            "time": "2017-05-18T08:15:18+00:00"
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@@ -582,7 +597,7 @@
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-            "time": "2016-01-26 17:28:51"
+            "time": "2016-01-26T17:28:51+00:00"
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@@ -649,7 +664,10 @@
                 "singularize",
                 "string"
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-            "time": "2015-11-06 14:35:42"
+            "support": {
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+            },
+            "time": "2015-11-06T14:35:42+00:00"
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@@ -703,25 +721,28 @@
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-            "time": "2015-06-14 21:17:01"
+            "time": "2015-06-14T21:17:01+00:00"
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@@ -729,8 +750,8 @@
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-                    "Doctrine\\Common\\Lexer\\": "lib/"
+                "psr-4": {
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@@ -751,13 +772,20 @@
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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": "2014-09-09 13:34:57"
+            "support": {
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+                "source": "https://github.com/doctrine/lexer/tree/1.0.2"
+            },
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@@ -833,26 +861,29 @@
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-            "time": "2016-12-18 15:42:34"
+            "time": "2016-12-18T15:42:34+00:00"
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@@ -875,7 +906,7 @@
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@@ -887,7 +918,11 @@
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+            "support": {
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@@ -964,7 +999,7 @@
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+            "time": "2017-05-31T11:50:14+00:00"
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@@ -1029,7 +1064,7 @@
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+            "time": "2017-06-22T18:50:49+00:00"
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@@ -1080,7 +1115,7 @@
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+            "time": "2016-12-20T10:07:11+00:00"
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@@ -1145,7 +1180,7 @@
                 "uri",
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@@ -1196,7 +1231,7 @@
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@@ -1246,7 +1281,7 @@
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@@ -1324,7 +1359,7 @@
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@@ -1395,7 +1430,7 @@
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@@ -1457,20 +1492,20 @@
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@@ -1484,11 +1519,10 @@
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+                "phpstan/phpstan": "^0.12.59",
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@@ -1507,11 +1541,6 @@
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@@ -1535,27 +1564,41 @@
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                 "psr-3"
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-            "time": "2017-06-19 01:22:40"
+            "support": {
+                "issues": "https://github.com/Seldaek/monolog/issues",
+                "source": "https://github.com/Seldaek/monolog/tree/1.27.0"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/Seldaek",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/monolog/monolog",
+                    "type": "tidelift"
+                }
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+                "phpunit/phpunit": "*"
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@@ -1580,10 +1623,16 @@
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                 "csprng",
+                "polyfill",
                 "pseudorandom",
                 "random"
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-            "time": "2017-03-13 16:27:32"
+            "support": {
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+                "issues": "https://github.com/paragonie/random_compat/issues",
+                "source": "https://github.com/paragonie/random_compat"
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@@ -1651,7 +1700,7 @@
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@@ -1697,7 +1746,10 @@
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-            "time": "2016-08-06 20:24:11"
+            "support": {
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@@ -1746,7 +1798,11 @@
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+            "support": {
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+                "source": "https://github.com/php-fig/container/tree/master"
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@@ -1796,7 +1852,7 @@
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@@ -1845,20 +1901,23 @@
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+            "support": {
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@@ -1867,7 +1926,7 @@
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@@ -1882,7 +1941,7 @@
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-                    "homepage": "http://www.php-fig.org/"
+                    "homepage": "https://www.php-fig.org/"
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@@ -1892,20 +1951,23 @@
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-            "time": "2016-10-10 12:19:37"
+            "support": {
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                 "symfony/process": "self.version",
@@ -2766,6 +3043,7 @@
             },
             "require-dev": {
                 "cache/integration-tests": "dev-master",
+                "doctrine/annotations": "~1.0",
                 "doctrine/cache": "~1.6",
                 "doctrine/data-fixtures": "1.0.*",
                 "doctrine/dbal": "~2.4",
@@ -2774,27 +3052,25 @@
                 "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-docblock": "^3.0",
+                "phpdocumentor/reflection-docblock": "^3.0|^4.0",
                 "predis/predis": "~1.0",
-                "sensio/framework-extra-bundle": "^3.0.2",
-                "symfony/phpunit-bridge": "~3.2",
-                "symfony/polyfill-apcu": "~1.1",
+                "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": "3.3-dev"
+                    "dev-master": "3.4-dev"
                 }
             },
             "autoload": {
                 "psr-4": {
-                    "Symfony\\Bridge\\Doctrine\\": "src/Symfony/Bridge/Doctrine/",
-                    "Symfony\\Bridge\\Monolog\\": "src/Symfony/Bridge/Monolog/",
-                    "Symfony\\Bridge\\ProxyManager\\": "src/Symfony/Bridge/ProxyManager/",
-                    "Symfony\\Bridge\\Twig\\": "src/Symfony/Bridge/Twig/",
                     "Symfony\\Bundle\\": "src/Symfony/Bundle/",
-                    "Symfony\\Component\\": "src/Symfony/Component/"
+                    "Symfony\\Component\\": "src/Symfony/Component/",
+                    "Symfony\\Bridge\\Twig\\": "src/Symfony/Bridge/Twig/",
+                    "Symfony\\Bridge\\Monolog\\": "src/Symfony/Bridge/Monolog/",
+                    "Symfony\\Bridge\\Doctrine\\": "src/Symfony/Bridge/Doctrine/",
+                    "Symfony\\Bridge\\ProxyManager\\": "src/Symfony/Bridge/ProxyManager/"
                 },
                 "classmap": [
                     "src/Symfony/Component/Intl/Resources/stubs"
@@ -2822,7 +3098,11 @@
             "keywords": [
                 "framework"
             ],
-            "time": "2017-07-05 13:28:34"
+            "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/extensions",
@@ -2878,35 +3158,34 @@
                 "i18n",
                 "text"
             ],
-            "time": "2017-06-08 18:19:53"
+            "time": "2017-06-08T18:19:53+00:00"
         },
         {
             "name": "twig/twig",
-            "version": "v2.4.3",
+            "version": "v1.42.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/twigphp/Twig.git",
-                "reference": "eab7c3288ae6603d7d6f92b531626af2b162d1f2"
+                "reference": "87b2ea9d8f6fd014d0621ca089bb1b3769ea3f8e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/twigphp/Twig/zipball/eab7c3288ae6603d7d6f92b531626af2b162d1f2",
-                "reference": "eab7c3288ae6603d7d6f92b531626af2b162d1f2",
+                "url": "https://api.github.com/repos/twigphp/Twig/zipball/87b2ea9d8f6fd014d0621ca089bb1b3769ea3f8e",
+                "reference": "87b2ea9d8f6fd014d0621ca089bb1b3769ea3f8e",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.0",
-                "symfony/polyfill-mbstring": "~1.0"
+                "php": ">=5.5.0",
+                "symfony/polyfill-ctype": "^1.8"
             },
             "require-dev": {
                 "psr/container": "^1.0",
-                "symfony/debug": "~2.7",
-                "symfony/phpunit-bridge": "~3.3@dev"
+                "symfony/phpunit-bridge": "^4.4|^5.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.4-dev"
+                    "dev-master": "1.42-dev"
                 }
             },
             "autoload": {
@@ -2928,23 +3207,26 @@
                     "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": "2017-06-07 18:47:58"
+            "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": [
@@ -3000,7 +3282,7 @@
                 }
             ],
             "description": "This bundle generates code for you",
-            "time": "2017-07-12 17:28:00"
+            "time": "2017-07-12T17:28:00+00:00"
         },
         {
             "name": "symfony/phpunit-bridge",
@@ -3062,7 +3344,7 @@
             ],
             "description": "Symfony PHPUnit Bridge",
             "homepage": "https://symfony.com",
-            "time": "2017-06-12 13:35:45"
+            "time": "2017-06-12T13:35:45+00:00"
         }
     ],
     "aliases": [],
@@ -3073,5 +3355,6 @@
     "platform": {
         "php": ">=5.5.9"
     },
-    "platform-dev": []
+    "platform-dev": [],
+    "plugin-api-version": "2.2.0"
 }