2 ** TODO Mode line doesn't necessarily refresh when the cursor moves
3 There is no cursor-move-hook, post-command-hook is probably
8 ** TODO Prompt to save before running PICO-8
9 ** TODO Double-confirm if running when already running
10 ** TODO More input restrictions
11 Kill/yank, newline, etc. all need to be prevented in data modes.
12 ** TODO Point movement commands
15 ** TODO Display sprites more squarely
16 This can theoretically be done via some display properties, but a
17 custom font file might be the easiest way to do it, fit it on screen,