* Fixed minor bugs related to Exception Dates.
* Optimized rule periods arrays (array only needs 'status' and 'time' when it's meant to be human-readable).
* Added custom filter `timed_content_filter` to emulate `apply_filter( 'the_content', ... )` functionality for content.

git-svn-id: https://plugins.svn.wordpress.org/timed-content/trunk@1056620 b8457f37-d9ea-0310-8a92-e5e31aec5664