Changes in v0.9.1:
o Added support for MSX2 using --msx2
o MSX2: It supports the PALETTE statement.
o MSX2: It supports MODE 4, extended sprites, DEFINE SPRITE COLOR, BORDER, and SCROLL.
o MSX2/SMS: Added PALETTE DEFAULT.
o MSX2: Added examples viboritas_msx2.bas and palette_msx2.bas.
o Added note about support of Blue and Purple buttons (Super Action Controllers for Colecovision)
o Added support for spinners and roller controller using CONT1.SPINNER and CONT2.SPINNER (Colecovision)
o Z80: Added small optimization for PRINT, saving one byte for each string printed.
o NES: Solved important bug where VPOKE/PRINT would corrupt some variables, and arrays could be allocated to the wrong address.