Added `wpt_events_load_args` and `wpt_productions_load_args` to manipulate WPT_Events::load() and WPT_Productions::load().
Tests were failing in PHP 5.2 and 5.3.
Test were still failing in PHP 5.2.
Merge branch 'productions-load-filter' into admin-display-meta-box
Added some hooks:
- `wpt_admin_after_save_wpt_theatre_prod` action
- `wpt_admin_meta_box_display` action
Added docblocks for the new filters and actions.
Ready for 0.9.2 release!