pspamm is still not installing the wheel requirement on the latest version

[Thomas-Ulrich]

Just tested by Claudia

[othman-bouizi]

Adding install issue, maybe related to the one above... pip3 is expecting setup.py file.
Install instruction comes from: https://seissol.readthedocs.io/en/latest/installing-dependencies.html#installing-pspamm
which differs from the one on PSpaMM github.