* Add `tox.ini`, support `2.6`, `2.7`, `3.4`, `3.5`, `3.6` and `3.7`
* Drop Python `3.2` and `3.3` support
* Improve PEP8-compliance in a few places
* Bump version to `1.0.2` and mark it as stable
* Add classifiers to `setup.py`
* Improve `.gitignore` with standard templates for popular environments
* Remove some dead code in comments