Get a clear statement on project's copyright and license

[MestreLion]

The copyright and license status of the original codebase this project built on to create the port should be clarified.

If needed, original authors could be contacted and asked if they could/would grant this project permission to release the port with a free software license, such as GPLv3+ (preferably) or BSD, MIT, etc.

I believe the original Rogue from Unix have a BSD license, but the DOS port may have restrictions as there were commercial versions published by Epyx.

People of interest to contact:

Rogue original authors
Michael C. Toy: creator, developer, also owner of A.I. Design
Glenn Wichman: creator and designer. AFAIK, was not involved in the DOS port
Ken Arnold: developer, and also creator of the curses library. May have not been involved in the DOS port

DOS port
Jon Lane: DOS port developer, also owner of A.I. Design
Mel Sibony: cited in title screen (for international release) and many source files. From Epyx perhaps?

Others
Donnie Russell - Created and released a windows port of Rogue from the same codebase this project used, so probably has found a solution about license.

RRP - The maintaners of the Rogue Restoration Project might know about copyright and license status of the DOS port.

[MestreLion]

From those, I believe Jon Lane and Donnie Russell are the top priorities. Jon was a partner/founder of A.I. Design, the company that created the commercial version of Rogue (which was later published by Epyx), and he seems to have been the main developer of the DOS port. And Donnie because his project is very similar to this: a port from the DOS version of Rogue, using the same codebase, to a modern platform. So any licenses and copyright solutions he found could apply here.