Update release notes for 2.1.0

Benestar · Benestar · commit 275c6ff4c943 · 2016-02-18T15:38:10.000+01:00
diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
@@ -1,6 +1,6 @@
 # Wikibase DataModel Serialization release notes
 
-## 2.1.0 (2016-02-16)
+## 2.1.0 (2016-02-18)
 
 * Added `newItemSerializer` and `newPropertySerializer` to `SerializerFactory`
 * Added `newItemDeserializer` and `newPropertyDeserializer` to `DeserializerFactory`
