This was made possible by id Software rereleasing the unaltered addon
sources codes under GPL2:
https://github.com/id-Software/quake2-rerelease-dll/
All past contributors but one agreed with the relicensing:
* Adam Leskis - @lpmi-13
* Andrey Nazarov - @skullernet
* Angus Freudenberg - @afreuden
* @BjossiAlfreds
* @DanielGibson
* David Carlier - @devnexen
* Denis Pauk - @0lvin
* @De-Seppe
* Jaime Moreira - @protocultor
* Joshua Scoggins - @DrItanium
* Mitchell Richters - @mjr4077au
* @NeonKnightOA
* Scott - @Pickle
* @svdijk
* Yamagi
@Dremor8484 didn't give their permission, their commits were reverted:
* c083b7c
* 6de4a9c
* e2ac13d
* 5d767c6
Many thanks to all involved with this project!