1.3 release

git-svn-id: https://plugins.svn.wordpress.org/sitemap-generator-for-webmasters/trunk@861533 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updating version

git-svn-id: https://plugins.svn.wordpress.org/sitemap-generator-for-webmasters/trunk@865845 b8457f37-d9ea-0310-8a92-e5e31aec5664