Add encoding related code into SYNOPSIS.

It makes easier to use this library.
Switch to MBTiny
Checking in changes prior to tagging of version 0.21.

Changelog diff is:

diff --git Changes Changes
index a206a60..d1a282c 100644
--- Changes
+++ Changes
@@ -2,6 +2,11 @@ Revision history for Perl extension Caroline

 {{$NEXT}}

+0.21 2014-07-19T23:09:14Z
+
+    - Switch to MBTiny
+    - Documentation update.
+
 0.20 2014-04-11T05:18:39Z

     - C-z -> sigtstp