Set stable tag

git-svn-id: https://plugins.svn.wordpress.org/simple-silverstream-tv-shortcodes/trunk@1047986 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update tested WordPress version

git-svn-id: https://plugins.svn.wordpress.org/simple-silverstream-tv-shortcodes/trunk@1047987 b8457f37-d9ea-0310-8a92-e5e31aec5664