Checking in changes prior to tagging of version 0.18.

Changelog diff is:

diff --git a/Changes b/Changes
index a92131a..7d6596c 100644
--- a/Changes
+++ b/Changes
@@ -2,6 +2,11 @@ Revision history for Perl extension HTML::Shakan

 {{$NEXT}}

+0.18 2013-08-13T01:07:41Z
+
+    - changed to show numerical zero value in the text box.
+      (moznion)
+
 0.17 2013-07-03T19:21:48Z

     - zero value support
@@ -13,7 +18,7 @@ Revision history for Perl extension HTML::Shakan
       (Masayuki Matsuki)
     - widget checkbox
       (Masayuki Matsuki)
-
+

 0.15