Prepare v2.0.0 release

Author: Olivier Dolbeau

Changelog.md

@@ -4,6 +4,11 @@ The change log describes what is "Added", "Removed", "Changed" or "Fixed" betwee
 
 ## Unreleased
 
+## 2.0.0
+
+- Remove legacy layer used to support Symfony ^2.0
+- Add strict type hinting
+
 ## 1.1.0
 
 - Remove support of PHP < 7.2

composer.json

@@ -34,7 +34,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "1.2-dev"
+            "dev-master": "2.1-dev"
         }
     }
 }