Anyone browsing the Github repo may find a new branch called WHaven.
This was an attempt to get the game working in Raze and is mainly based on WitchavenGDX.
Ultimately we decided, though, not to make this game an official part of Raze, mainly due to quality concerns and the inability to make meaningful comparisons with the original DOS release.
This branch has been reported to have several bugs and inconsistencies with the original DOS release but being faced with investing some real time into fixing such an inferior game and dealing with the future implications of having to support it, it seemed like the wiser decision to abandon it but make the work that's already done accessible to the public.
So that's it. Don't get your hopes up that we may eventually offer full support for it. If someone wants to pick this up and genuinely address these problems, they'd be welcome, of course.