Migrate to pyproject.toml

[banesullivan]

Tracking a comment from @jhkennedy in https://github.com/pyOpenSci/software-submission/issues/138#issuecomment-1858583110 here:

It's time to move from setup.py to pyproject.toml

While setup.py is not technically deprecated, ref https://packaging.python.org/en/latest/discussions/setup-py-deprecated/, pyproject.toml is the new standardized format to describe project metadata declaratively, introduced with PEP 621. It's easier to work with and allows for shared configuration between different tools.

[raphaelquast]

There is now a (work-in-progress) PR to switch to pyproject.toml: #216

[raphaelquast]

216 is now merged into the dev branch!

EOmaps v8.0 (see #205) will incorporate the following changes:

• switch from setup.py to pyproject.toml
• minimal supported python version is v3.8
• version is now single-sourced to pyproject.toml file (_version.py is removed)
• optional dependency groups are implemented for pip install

[banesullivan]

Fantastic!