v.0.20 (Apr 28, 2000)
   =============
    - Fixed 8x16 sprite handling; fixes sprites for Golvlius, etc.
      (Thanks to Charles Mac Donald)
    - Changed handling of cpu interrupt timing.
    - Reworked VRAM reading to account for read-ahead buffer. Fixes Astro
      Warrior, etc.
    - CHASMS now uses the RAZE Z80 emulation core instead of Marat's. RAZE is
      quite a bit faster, as well as more accurate.
      (Fixes BIT bug, fixing R-Type, Simpsons vs. Space Mutants, etc.)
      (Fixes IRQ Line emulation, fixing timing issues on Choplifter, etc)
    - Load ROM dialog changes:
       * Now alphabetically sorted.
       * Improved PGUP/PGDN behavior; added HOME/END behavior.
       * Can now see and change directories.
       * Added mousewheel support.
    - 32 bpp color depth now works
    - Modified rendering code to shut off when DDraw surface is lost. This
      means that when CHASMS is not the foreground task, it will yield a 
      significant amount of cpu time back to the OS.
    - Proper PAL emulation (311 lines per refresh rather than 262 @ 50fps)
    - SaveRAM now saves both pages of RAM
    - VDP Sprite Collision now emulated
    - Game Gear ports 1 through 6 now emulated
    - Stereo Game Gear sound supported
    - State load now F7 instead of F6
    - HCounter now implemented (No lightgun support _yet_, tho)
    - Miscellaneous bugfixes
    - New SaveState format; an open standard that we hope to encourage
      other SMS/GG emulators to support
    - chasms.cfg is written fresh at shutdown - modified settings are saved.
    - All GUI functions are now implemented!
    - ROM Checksumming
    - Added support 2 joysticks, and more than 4 buttons; No longer requires
      DirectX7.
    - Added PSG logging. Added standalone PSGPlay program.
    - Rewrote the Dialog Manager; no longer bugs out when closing dialogs when
      more than two were open.
    - ALT-F4 now works to close CHASMS.