runpy support for canonical script

[jaraco]

It would be nice to be able to invoke this package with python -m (runpy) support. Currently the package can be invoked with python -m pip_autoremove, but since the canonical command is pip-autoremove, it would be more intuitive to invoke the script with python -m pip-autoremove.

Doing so would allow it to be invoked using pip-run so the package could be invoked without being installed. Would you support such functionality?

[tresni]

PEP8 says module names should be lowercase, alphanumeric, and underscores (technically only if it improves readability.) So the module name seems to be correct by Python community standards. I'm not aware (though didn't look hard) of any module that is actually named with a hyphen.