Motivation

Since the release of PEP 621, the .toml file has been increasingly adopted for simpler usage and its enhanced functionality. The setup.cfg, mainfest.in and .coveragerc files can be subsumed in the .toml file without any breaking changes. This can reduce the amount of config files and make the process of publishing future release versions simpler as well. WDYT?

Suggestion

Include the setup.cfg, mainfest.in and .coveragerc files into the pyproject.toml file.

Additional context (optional)

No response