Removed $filters from cache_lib functions (no longer needed).
Added ability to add single keys to multiple lists with one cache_lib call.
Cleaned up comments in record dao and link dao.
Fixed a pretty stupid bug in cache_lib::single() where cache was being set even after the record had just been pulled from cache... no idea how that one slipped through.
Standardized, anytime $offset and $limit exist in a function's parameters, the order is always $offset then $limit.
Renamed cache_list_engine to cache_meta_engine.
Reworked the cache_lib's $after_cache_func callback to contain more useful parameters, this has not yet been implemented on link daos properly.