[Distutils] setup() arguments documentation

Hi, Shouldn't it be documented that the keyword argument "license_file" is supported as an agrument in setup()? It's currently not listed in the section https://setuptools.readthedocs.io/en/latest/setuptools.html#new-and-changed-... Writing setup(..., license_file="LICENSE.txt", ...) has actually the same effect as adding "license_file" to the metadata section of setup.cfg. Such an elementary functionality as adding a license_file to a package should be considered to be a standard functionality of setup(), that should be properly documented. Right now, the users get's the impression, that it's necessary to use a setup.cfg file, if they want to use the license_file property. Regards, Johannes