- Update to version 5.1.2
* Minor changes have been made to text that is output to the
console.
* These improvements have been made to the support for John
Romero’s SIGIL II:
+ "SIGIL" can no longer be selected in the episode menu if
SIGIL isn’t loaded but SIGIL II is.
+ The Spider Mastermind’s health in E6M8: Abyss Of Despair is
now correct.
+ Thorr’s music is now louder.
* If known, the author of the current map is now displayed by
the mapstats CCMD.
* A bug is fixed whereby the corpses of monsters could remain
solid, blocking the player’s path, in some rare instances.
* Minor improvements have been made to text autocompleted in the
console by pressing the TAB key.
* Minor improvements have been made to the parsing of enterpic
in MAPINFO lumps.

- Update to version 5.1.1
* Improvements have been made to the support for John Romero’s
SIGIL II.
* Minor improvements have been made to the parsing of bossaction
in MAPINFO lumps.

- Update to version 5.1
* https://github.com/bradharding/doomretro/releases/tag/v5.1