Update RELEASE-NOTES.md

Benestar · Benestar · commit bd2d2f2054bc · 2015-07-03T10:57:50.000+02:00
diff --git a/RELEASE-NOTES.md b/RELEASE-NOTES.md
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 # Wikibase DataModel release notes
 
+## Version 3.1 (dev)
+
+* Added `DerivedPropertyValueSnak`
+
 ## Version 3.0.1 (2015-07-01)
+
 * Fixed out of bounds bug in `SnakList::orderByProperty`
 
 ## Version 3.0.0 (2015-06-06)
