Rename package to make it play well with dev tools

[fkromer]

The name of this package (boolean.py) is unconventional. This leads to problems when using common Python dev tools. E.g. running liccheck with $ liccheck -s license_check.ini -r requirements.txt leads to pkg_resources.DistributionNotFound: The 'boolean-py==3.7' distribution was not found and is required by the application

[pombredanne]

@fkromer I reckon that's a little bit uncommon, but this is still valid for a package name to have a dot and a dot py extension
Which Python/pip/setuptools version do you run and on which OS?

[pombredanne]

Actually your issue stems from not using the package name:
use boolean.py==3.7 and not boolean-py==3.7