Checking in changes prior to tagging of version 0.0.0_02.

Changelog diff is:

diff --git a/Changes b/Changes
index 8f8d635..39fe850 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,8 @@ Revision history for Perl extension Algorithm-SetSimilarity

 {{$NEXT}}

+0.0.0_02 2013-09-22T08:48:30Z
+
     - Delete the meanless lines.
     - Add estimate_data_type() to estimate a data type of a set or the sets.