Why moving it to Gitlab?
- It would have more visibility for users as well as developers.
- Perhaps Harm may start working on that repository instead of
posting
files on the mailing list :-) as he has an account on Gitlab. Well,
if
he doesn't, I'll keep up my git maintainer role.
My 2 cents: With that motivation, I'm against moving it to GitLab. You
wrote it's still work in progress and that you're not willing to adapt
the code for OLL or LilyPond proper. I don't see a reason to give this
a more official flavor by putting it into the organization.