Hi,
I've enabled the issue tracker at https://git.lysator.liu.se/nettle/nettle/-/issues, and filed a few issues for old TODO items, most of which imply ABI and/or API changes. Feel free to file aditional issues for bugs, feature requests, or to track work you are doing or planning.
My intention is to (i) keep track of desirable or in-progress changes, and (ii) use for release planning, e.g., use a tag or "milestone" to attach to issues that we want to be included in the next release, similar to how misc/plan.html has been use for some of the releases in the past.
Regards, /Niels