allow Doctrine persistence 2 too

Author: xabbuh

composer.json

@@ -32,7 +32,7 @@
     "require-dev": {
         "doctrine/annotations": "^1.10.4",
         "doctrine/cache": "~1.0",
-        "doctrine/persistence": "^1.3",
+        "doctrine/persistence": "^1.3|^2.0",
         "paragonie/sodium_compat": "^1.8",
         "symfony/asset": "^3.4|^4.0|^5.0",
         "symfony/browser-kit": "^4.3|^5.0",