Bugfixes

Fixed: SETSCREEN works again
Fixed: LOCAL sx, sy; GETDESKTOPSIZE sx, sy; SETSCREEN sx, sy, FALSE //
no ugly scroll bar is visible
Fixed: ALPHABLEND 0 really resets alphablending
Changed: Made some tests ready for mobile (resolution is set according
to DESKTOPSIZE): JumpIt, IsometricDemo (still very slow), JumpFrog, ...
Fixed: PRINT ignores unknown characters (0-26 charcode)
Fixed: SPRITE2MEM had wrong color format (ARGB instead of ABGR)
Fixed: CALLBYNAME rewritten and returns correct return value
Changed: Optimized Shadow Stack implementation in Debugging mode -
should run now much faster
Fixed: SETSCREEN Fullscreen parameter functions now (does not use the
HTML5 fullscreen API anymore, because it requires to be callen in a
click/key event, which SETSCREEN is usually not -> sets the canvas size
to innerWidth/innerHeight instead)
Added: IE 11 support