Feature request: saving transform at intermediate iterations

[gnarayan]

I'd like to save the transformation at some range of intermediate iterations (or even every iteration if possible).

Something like this. Specifically for this sort of example animation.

Right now this is sort of possible by setting the random state and init and running from scratch each time with a different niter, but that's not exactly right.

[snosenzo]

I would really like to see this as well. Or at the very least not have to recompute the tree upon changing the number of iterations.
Do you know of any other python libraries that allow this easily?