Implemented VirtualCorpusRewrite.

Change-Id: I937cfa78db9be0602b17222f37de72cf3b63027c
diff --git a/core/Changes b/core/Changes
index ec10f8e..1b78700 100644
--- a/core/Changes
+++ b/core/Changes
@@ -1,7 +1,9 @@
 version 0.61.2
 12/09/2018
    - Removed log4j loader and old OAuth2 implementation codes(margaretha)
-
+13/09/2018
+   - Updated KoralNode and enforced order of RewriteTask (margaretha)
+    
 version 0.61.1
 28/08/2018
     - Added API URL versioning (margaretha)