changes:
- remember window size
- starting direction of shooters now matches original Kye
- add Kye to level if absent, in the same way that windows Kye 2.0 did
- make the game wait a bit before reacting to a key being held down. This stops
the occasional random double-moves caused by a key press spanning more than
1/10th of a second. You have to hold shift down if you really need to move
fast.
- finish writing recording if game exited while recording
- fix crash when trying to tell user about failing to read a recording
