0.51:
        minor 6502 fix
        minor PPU fixes
        minor sound fixes
        MMC1 fixes
        VS fixes
        state saving
        midscreen palette changing
        long file name support
        zapper support
0.50d:
        more VS fixes.. Ice Climber works now
0.50c:
        VS system dip switches
0.50b:
        4 controller support
        preliminary VS SMB support
0.50a:
        changed pmode extender (from PMODE to WDOSX)
        added palette option to GUI
        added 'insert coin' key for VS games
0.50:
        improved mapper support (1,2,3,4,7,9,15,64)
        major PPU rewrite
        SRAM saving
        sound
        GUI
        arkanoid paddle
0.00
        first release
