(*) timemachine
(^) Play => Play + UI
(^) Play => TimeMachine
(^) play.ceu => time-machine.ceu
(>) ui, rw,fw,st,ps,pl
(>) backward button behavior
(>) minor cleanup
(+) timemachine for WCLOCKs
(>) finalize
(>) UI + TM
(>) in-game timemachine
(>) first/last
(>) ALT+g ALT+h (back and forth)
(>) "blur" on ALT effect
(>) time-machine => timemachine + ui-timemachine
(>) clean up
(>) clean up
(>) clean up
(+) input
(>) snapshots
	(*) TODO: remove form main.c
(>) snapshots
(>) back starting time
(>) me? for back emit
(>) minor changes
(>) code cleanup