Checking in changes prior to tagging of version 0.03.

Changelog diff is:

diff --git a/Changes b/Changes
index 8b94205..7faf6d6 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,12 @@ Revision history for Perl extension Data-Generator-FromDDL

 {{$NEXT}}

+0.03 2014-05-04T03:56:40Z
+
+    - Reduced memory usage to half.
+
+    - 25% speed up generating time.
+
 0.02 2014-05-01T06:11:15Z

     - Added '--bytes_per_sql' option to datagen_from_ddl(1)