Checking in changes prior to tagging of version 0.02.

Changelog diff is:

diff --git a/Changes b/Changes
index b81c3d8..54ac025 100644
--- a/Changes
+++ b/Changes
@@ -1,4 +1,7 @@
 Revision history for Data::Iterator::SlidingWindow

+0.02    Wed Mar 20 15:20:00 2013
+        - Change required perl version
+
 0.01    Fri Feb 23 13:55:00 2013
         - Initial release
Delete duplicate from MANIFEST.SKIP