Checking in changes prior to tagging of version 0.02.

Changelog diff is:

diff --git a/Changes b/Changes
index 9e5681d..4176fb8 100644
--- a/Changes
+++ b/Changes
@@ -1,4 +1,7 @@
 Revision history for Digest::BLAKE2

-0.01    Sub Feb 10 12:35:11 2013
-    - Initial version
+0.02 2014-03-24
+  - Fix the bugs in threaded Perl by rurban (RT #94112)
+
+0.01 2013-02-10
+  - Initial version