Checking in changes prior to tagging of version 0.18.

Changelog diff is:

diff --git a/Changes b/Changes
index 75eecfb..df856c7 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,7 @@
 Revision history for Perl extension WWW::GoKGS.

+0.18 Jul 6th, 2014
+
   - Add WWW::GoKGS#get

   [DOCUMENTATION]