Updated symfony version constraint to prepare V3 bundle

Geolim4 · Geolim4 · commit 7e7da04b78dd · 2018-05-02T00:06:37.000+02:00
diff --git a/composer.json b/composer.json
@@ -28,7 +28,7 @@
         ],
     "require": {
         "php": "^5.6 || ^7.0",
-        "symfony/symfony": "^3.1",
+        "symfony/symfony": ">=3.1 <3.4",
         "phpFastCache/phpFastCache": "^6.0"
     },
     "autoload": {
