Add option to use progress bars

[TorkelE]

It could be nice to enable progress bars of computations: https://github.com/timholy/ProgressMeter.jl

More of a long term idea. I haven't really used these myself, so not sure how feasible/useful it is, but could be cooler to consider at some point.

[ivborissov]

Yes, I had experience with it and it is a nice thing to have.