Remove pkgutils - Githubissues

Changes proposed in this PR:

Use simpler versioning.

Tips for an ideal PR

You have read our Code of Conduct: https://github.com/pinax/.github/blob/master/CODE_OF_CONDUCT.md
You have read our Contributing info: https://github.com/pinax/.github/blob/master/CONTRIBUTING.md
The PR is atomic
Unit tests have been updated/added, if needed
App version number has been updated in setup.py (Pinax uses SemVer)
Change Log has been updated
You have added your name to the AUTHORS file

pinax / pinax-notifications