Arcade Learning Environment 0.8.1

Added

• Added type stubs for the native ALE Python module generated via pybind11. You'll now get type hints in your IDE.

Fixed

• Fixed render_mode attribute on legacy Gym environment (@younik)
• Fixed a bug which could parse invalid ROM names containing numbers, e.g., TicTacToe3D or Pitfall2
• Changed the ROM identifier of VideoChess & VideoCube to match VideoCheckers & VideoPinball.
  Specifically, the environment ID changed from Videochess -> VideoChess and Videocube -> VideoCube.
  Most ROMs had the ID correctly as video_chess.bin and video_cube.bin but for those who didn't you can
  simply run ale-import-roms which will automatically correct this for you.
• Reverted back to manylinux2014 (glibc 2.17) to better support older operating systems.