Added part of keyboard input on Windows. Need to repaint the window on event return and handle area sizes now...
Added repaint after Area event on Windows.
Implemented Area.SetSize() on Windows.
More TODOs.
Documented that the clip area in AreaHandler.Paint() more properly and indicate that it is cleared on each AreaHandler.Paint() call; (try to) implement that on Windows (GTK+ does it for us; noted that as well).
Added Alt+[key] and F10 handling to Windows Area key events. Also more TODOs.