Doom source port with a focus on demo recording and speedrunning

 This is a fork of prboom+ with many new features, including:
 .
  * Heretic, Hexen, MBF21, and Doom-in-Hexen support
  * In-game console and scripting
  * Full controller support
  * Palette-based lightmode for opengl
  * Debugging features for testing
  * Strict mode for speedrunning
  * Various quality of life improvements
  * Advanced tools for TASing
  * Rewind
 .
 DSDA-Doom requires game data to run. Free game data is available in the
 freedoom package. Commercial game data can be packaged using
 game-data-packager. DSDA-Doom supports all flavors of Doom, including
 The Ultimate Doom, Doom 2 and Final Doom as well as Chex(R) Quest, HacX,
 Freedoom: Phase 1 and Phase 2 and FreeDM.
 .
 Additionally, DSDA-Doom supports Heretic and Hexen.