tagging version 0.7.3

git-svn-id: https://plugins.svn.wordpress.org/mk-simple-backups/trunk@978892 b8457f37-d9ea-0310-8a92-e5e31aec5664
updating version of plugin

git-svn-id: https://plugins.svn.wordpress.org/mk-simple-backups/trunk@978899 b8457f37-d9ea-0310-8a92-e5e31aec5664
updating 0.7.3 with minor changes

git-svn-id: https://plugins.svn.wordpress.org/mk-simple-backups/trunk@978919 b8457f37-d9ea-0310-8a92-e5e31aec5664
update readme.txt

git-svn-id: https://plugins.svn.wordpress.org/mk-simple-backups/trunk@978945 b8457f37-d9ea-0310-8a92-e5e31aec5664
updating plugin version

git-svn-id: https://plugins.svn.wordpress.org/mk-simple-backups/trunk@978949 b8457f37-d9ea-0310-8a92-e5e31aec5664
updating main class

git-svn-id: https://plugins.svn.wordpress.org/mk-simple-backups/trunk@978966 b8457f37-d9ea-0310-8a92-e5e31aec5664