Checking in changes prior to tagging of version 0.18.

Changelog diff is:

diff --git a/Changes b/Changes
index 7e14f04..cd5856e 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,8 @@
 Revision history for Perl extension Kossy

+0.18    Thu Aug 8 16:05:45 2013
+        - json escape only for string ( Thank you sonots-san)
+
 0.17    Tue Jul 16 13:38:09 2013
         - updated to Twitter Bootstrap
         - updated to jQuery