Add items for removing update transients.

git-svn-id: https://plugins.svn.wordpress.org/a-fresher-cache/trunk@941335 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update stable tag.

git-svn-id: https://plugins.svn.wordpress.org/a-fresher-cache/trunk@941336 b8457f37-d9ea-0310-8a92-e5e31aec5664