Fix error in logic for onday/offday and ondate/offdate matches

git-svn-id: https://plugins.svn.wordpress.org/shortcodes-to-show-or-hide-content/trunk@977940 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update stable tag and version number

git-svn-id: https://plugins.svn.wordpress.org/shortcodes-to-show-or-hide-content/trunk@977947 b8457f37-d9ea-0310-8a92-e5e31aec5664