switch to Minil
Lowerlize inner variables
refactor test
can specify single scalar for weight
can pass options to constructor
Checking in changes prior to tagging of version 0.04.

Changelog diff is:

diff --git a/Changes b/Changes
index 8589635..9009629 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,12 @@ Revision history for Perl extension Math::CheckDigits

 {{$NEXT}}

+0.04 2013-04-15T02:28:52Z
+
+        - can specify single scalar as `weight`
+        - can pass `options` to constractor
+        - switch to Minilla
+
 0.03    Tue Aug  6 16:11:23 2012
         - add tests