Add support for Symfony 5

composer.json

@@ -27,25 +27,25 @@
         "sonata-project/doctrine-extensions": "^1.1",
         "sonata-project/form-extensions": "^1.0",
         "sonata-project/twig-extensions": "^1.0",
-        "symfony/asset": "^4.3",
-        "symfony/config": "^4.3",
-        "symfony/console": "^4.3",
-        "symfony/dependency-injection": "^4.3",
+        "symfony/asset": "^4.3 || 5.0",
+        "symfony/config": "^4.3 || 5.0",
+        "symfony/console": "^4.3 || 5.0",
+        "symfony/dependency-injection": "^4.3 || 5.0",
         "symfony/event-dispatcher-contracts": "^1.1",
-        "symfony/form": "^4.3",
-        "symfony/framework-bundle": "^4.3",
-        "symfony/http-foundation": "^4.3",
-        "symfony/http-kernel": "^4.3",
-        "symfony/options-resolver": "^4.3",
-        "symfony/twig-bundle": "^4.3",
+        "symfony/form": "^4.3 || 5.0",
+        "symfony/framework-bundle": "^4.3 || 5.0",
+        "symfony/http-foundation": "^4.3 || 5.0",
+        "symfony/http-kernel": "^4.3 || 5.0",
+        "symfony/options-resolver": "^4.3 || 5.0",
+        "symfony/twig-bundle": "^4.3 || 5.0",
         "twig/twig": "^2.11 || ^3.0"
     },
     "require-dev": {
         "knplabs/knp-menu-bundle": "^2.0",
         "matthiasnoback/symfony-dependency-injection-test": "^4.0",
-        "symfony/debug": "^4.3",
-        "symfony/phpunit-bridge": "^4.3",
-        "symfony/stopwatch": "^4.3"
+        "symfony/debug": "^4.3 || 5.0",
+        "symfony/phpunit-bridge": "^5.0",
+        "symfony/stopwatch": "^4.3 || 5.0"
     },
     "suggest": {
         "knplabs/knp-menu-bundle": "^2.0",