v0.3.5 03/17/20 -- Empty files are not an error.
v0.3.4 04/14/19 -- Bugfix for get_installed_distributions, python 3.6+.
v0.3.3 04/05/17 -- More info for pypi checks.
v0.3.2 03/05/17 -- Bump version for pypi doc changes.
v0.3.1 03/05/17 -- Better docs.
v0.3.0 03/05/17 -- First public release.
