Fix EDAX-Bruker (PCy, PCz) conversion for rectangular detectors

[hakonanes]

Description of the change

This PR changes the EDAX->Bruker (PCy, PCz) conversion for rectangular detectors. The correct conversion is as follows:

PCy = 1 - y*/Ny
PCz = z* / min(Nx, Ny)

where (PCy, PCz) are the Bruker projection center (PC) y and z coordinates, (Nx, Ny) are the number of detector columns and rows, and (y*, z*) are the EDAX TSL PC y and z coordinates.

The Oxford->Bruker conversion stays the same.

This change follows the same change coming in a new version of PyEBSDIndex (relevant commit drowenhorst-nrl/PyEBSDIndex@ea22dfd). Hence, we should wait to merge this until a new version of PyEBSDIndex is available with this change.

Progress of the PR

• Docstrings for all functions
• Unit tests with pytest for all lines
• Clean code style by running black via pre-commit
• Wait for a new version of PyEBSDIndex

For reviewers

• The PR title is short, concise, and will make sense 1 year later.
• New functions are imported in corresponding __init__.py.
• New features, API changes, and deprecations are mentioned in the unreleased
  section in CHANGELOG.rst.
• New contributors are added to release.py, .zenodo.json and
  .all-contributorsrc with the table regenerated.

[hakonanes]

This PR will be added to another PR preparing a 0.9 release compatible with PyEBSDIndex v0.2.