Schedule content to automatically expire and change at a certain time, and notify people of expiration.
a. Improved, more standard datepicker for expiration date/time field. b. Removal of irrelevant "seconds" picking from date/time field. c. Explore support for manipulating custom taxonomy terms upon expiration. d. Explore support for manipulating custom meta values upon expiration. e. Explore support for swapping content from a separate post upon expiration. f. Revamped documentation. g. Clean up settings panel.