Implemented predefined VC caching and added VC reference tests.

Change-Id: I84ad56b375f8b076ad92e493775993fc0580249f
diff --git a/core/Changes b/core/Changes
index c89564b..80ee5c4 100644
--- a/core/Changes
+++ b/core/Changes
@@ -1,3 +1,7 @@
+version 0.61.0
+02/08/2018
+	- Updated Krill and Koral versions enabling VC caching and referencing (margaretha)
+	
 version 0.60.5
 09/07/2018
 	- Fixed status codes (margaretha)