Future work roadmap:
 * https://github.com/libsdl-org/SDL/wiki/Roadmap

 * Check 1.2 revisions:
	3554 - Need to resolve semantics for locking keys on different platforms
	4874 - Do we want screen rotation?  At what level?
	4974 - Windows file code needs to convert UTF-8 to Unicode, but we don't need to tap dance for Windows 95/98
	4865 - See if this is still needed (mouse coordinate clamping)
	4866 - See if this is still needed (blocking window repositioning)