Log Message:
libretro-beetle-sgx: Update to 20200520

Brad Parker (1):
      initial cdrom support

Rob Loach (1):
      Update core options API

fpscan (1):
      Turkish language option

negativeExponent (20):
      Update core files to 1.23
      Sync blip and psg sound
      Update libretro-common files
      Update libretro.cpp
      Fix runahead for arcade card games
      Allow access to available RAM using retro_memory_map
      Bump version to 1.23.0
      Change core prefix name to Beetle
      Implement environment callback RETRO_ENVIRONMENT_GET_INPUT_BITMASKS
      Input improvements and sync misc items
      Cleanup Makefile
      Update Makefile
      Simplify update_input()
      Add core option to allow automatic detection of Games Express CD games
      Cut down on unneeded logging when no related option has been changed
      input: Tweaks and bug fix for turbo
      Create README.md
      Update .travis.yml
      Remove audio/video stats report - frontend already has stats collection
      Move 2/6 button mode toggle to frontend - Fixes the issue where toggling \ 
does not retain 6-button modes Reference \ 
https://github.com/libretro/beetle-pce-fast-libretro/issues/148

retro-wertz (9):
      Remove unneeded references to basename and save_directory
      Fix softreset and allow_up_down options
      Cleanup - Remove header mednafen/huc.h - Remove unused function \ 
IsBRAMUsed() - Cleanup MDFNI_LoadGame()
      Update libretro.cpp
      Silence this log when not running CDROM game
      Remove unnecessary comment from makefile
      fix wrong operator, this should be "="
      Use fixed values for PAR modes
      stop travis building for wiiu for now