Nutils tutorials always download pyprecice 3.0.0.0

[MakisH]

We currently set pyprecice==3.
We should probably set pyprecice>=3,<4 or similar.

[fsimonis]

We can ask for a compatible version pyprecice~=3.0

[BenjaminRodenberg]

What's holding us back? I just reviewed #541 and was also a bit surprised about the pyprecice==3. In #541 we will keep it consistent with the rest and merge now.

[MakisH]

What's holding us back?

Nothing, just priorities and time.
I think the solution with pyprecice~=3.0 is good, provided it will install a newer feature release, if available.

Happy to review PRs. 🤗