Merge branch '4.4' into 5.1

nicolas-grekas · nicolas-grekas · commit 950908498ca2 · 2020-10-06T17:50:31.000+02:00
* 4.4:
  Update versions in composer.json
  [Mime] Fix serialization of RawMessage
diff --git a/composer.json b/composer.json
@@ -37,5 +37,5 @@
         ]
     },
     "minimum-stability": "dev",
-    "version": "5.1-dev"
+    "version": "5.1.x-dev"
 }
