Fix typo.
Update validation.
Merge branch 'develop'
Update Changes.
Checking in changes prior to tagging of version 0.07.

Changelog diff is:

diff --git a/Changes b/Changes
index 3d50662..b5bf57d 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,8 @@ Revision history for Perl extension Array-PrintCols-EastAsian

 {{$NEXT}}

+0.07 2013-12-29T09:06:11Z
+
     - Update width validation for pretty_print_cols().

 0.06 2013-12-28T05:39:16Z