Are there any plans to include "random state" interface for any of the sampling functions (i.e. to guarantee stable output for testing)? Or: was this considered and explicitly not done for some reason?

If this isn't contra-indicated, would a pull request that implements this only partially be of interest? There's a lot of places where random state might be useful, and I don't have time to search through the whole codebase and find/implement them all, but I'd be willing to do so for a handful of "low hanging fruit" places that would be useful for the project I am working on. (I am going to do this anyhow, just want to know if I should isolate this as an independent PR)