----------------
- use pkgutil-style namespace declaration
- package cleanup (``.gitignore``, ``MANIFEST.in``, ``README.rst``)
- docs cleanup (``Makefile``, ``conf.py``)
- tests cleanup (``tox.ini``, ``.travis.yml``)
- remove unsupported documentation bits
- fix coverage tests to only test this package
- remove coveralls from the Travis CI configuration