Fixed missing braces.
Backported paginated post/page cache clearing.
Added new invalidation method: post/page + posts index page.

Clears cache for modified post/page. Also clears posts index page if content of type 'post' was changed.
Added hook to customise clearing array externally.
Fixed filter hook.
Merge branch 'master' of /private/var/www/wp-ffpc-upstream
Revert "Fixed missing braces."

This reverts commit bc825f4caecaabfabbacd1cab9ef9f9d489fa4fb.
Merge
Fix merge.
Merge pull request #25 from plescheff/master

Implemented new invalidation method; added filter hook.