Change required perl version
Checking in changes prior to tagging of version 0.03.

Changelog diff is:

diff --git a/Changes b/Changes
index 54ac025..94e40ca 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,8 @@
 Revision history for Data::Iterator::SlidingWindow

+0.03    Sat Apr 13 20:10:00 2013
+        - Change required perl version
+
 0.02    Wed Mar 20 15:20:00 2013
         - Change required perl version
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