Clearer Syntax for pystencils Field
At the moment this is equivalent:
field = ps.fields(f"field(2): [2D]")
field[0, 0](1) == field.center(1) == field(1)
On the one hand side having this flexibility can be nice on the other it can lead to a lot of confusion if all of the above forms are mixed throughout the package. I would propose to only stick to field[0, 0](1)
and maybe even depreciate all others. It is the most explicit form.