tweak default cache whitelist

git-svn-id: https://plugins.svn.wordpress.org/next-level-cache/trunk@913105 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update version number to 0.0.8

git-svn-id: https://plugins.svn.wordpress.org/next-level-cache/trunk@913106 b8457f37-d9ea-0310-8a92-e5e31aec5664