Added reference of last change related to removal of year zero fix.



git-svn-id: https://svn.apache.org/repos/asf/xmlbeans/trunk@535317 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/CHANGES.txt b/CHANGES.txt
index b7345fd..922bec4 100644
--- a/CHANGES.txt
+++ b/CHANGES.txt
@@ -15,7 +15,8 @@
 * Fix: improved error handling during loading of Schema type system
 * Fix: bugs in Duration serialization
 * Fix: XMLCursor.getTextValue()
-
+* Fix: Remove year zero from GDate, GDateBuilder and XmlCalendar per 
+XMLSchema spec D.3.2 
 
 Changes in v2.2.0 since v2.1.0: