Updated sf constraint to 3.4

Geolim4 · Geolim4 · commit a26805bb2c38 · 2018-05-07T20:10:39.000+02:00
diff --git a/composer.json b/composer.json
@@ -27,7 +27,7 @@
             }
         ],
     "require": {
-        "symfony/symfony": "^3.3|^4.0",
+        "symfony/symfony": "^3.4|^4.0",
         "phpFastCache/phpFastCache": "^7.0"
     },
     "autoload": {
