Why are most of Rustfmt features unstable?

I could list all the tracking issues for them like for control\_brace\_style but honestly I feel as that would be rude and that is not my intention here. But if you want you can scroll through their configuration page and see which features are stable. I'm not quite sure if I can use these even though they aren't stable yet.

Does the project simply not have enough contributors? It seems to have regular commits to me? Is it not a priority for those contributors? That's okay if it is, they are making this free piece of software in probably their spare time so fair enough.

It has about 150 or so commits since the last release. Maybe some of those commits have stabilized those features? Maybe it's harder to support these than I expected?

I decided to make a post here because A) I think it would be good to bring more awareness to this project since it's a good project and B) Because I want to see if it's something I could help out.