Fixed windows support

Change-Id: I042ab736bb0fc6e7dce17c330b3bc663be60cc79
diff --git a/Changes b/Changes
index 140240b..f3f575a 100644
--- a/Changes
+++ b/Changes
@@ -1,3 +1,6 @@
+0.21 2016-10-14
+        - Improved Windows support
+
 0.20 2016-10-15
         - Fixed treatment of temporary folders in script