UltraNest support

[JohannesBuchner]

Would you be interested to add support for https://johannesbuchner.github.io/UltraNest/ ?
The interface should be very similar to dynesty.
UltraNest is a very reliable tuning-parameter-free algorithm. It can be faster than dynesty, especially if you take advantage of vectorization.
It also supports resuming from disk and MPI parallelisation, if that is useful to you.

[minaskar]

Hi @JohannesBuchner,

Yes, certainly! The version of Cronus currently on the repo is quite outdated so don't pay any attention to that. I'll add UltraNest to the list of samplers.