fix bug of default_unsigned
Checking in changes prior to tagging of version 0.06.

Changelog diff is:

diff --git a/Changes b/Changes
index bfb46bf..96936fe 100644
--- a/Changes
+++ b/Changes
@@ -1,6 +1,9 @@
 Revision history for Perl extension DBIx::Schema::DSL

 {{$NEXT}}
+
+0.06 2013-07-11T04:10:06Z
+    - fix bug of `default_unsigned`
     - Switch to Minilla.

 0.05    Wed Apr  3 06:11:19 2013