Support for pathlib

[fepegar (Fernando Pérez-García)]

@dgobbi

What about vtkStringArray, which is often used to store a list of filenames? Have you (or other users you are aware of) run into situations where you tried putting a Path object into a vtkStringArray?

No. But I think in that case it would make sense that only strings are accepted as input, as it’s not a vtkPathArray…