- Refactored REST client to use requests library for Python 3 compatibility.
- Added docstrings to all public methods & classes.
- Fleshed out CRUD APIs for data, feed, group.
- Wrote full suite of integration tests to verify changes.
- Updated setup.py to bump version to 0.9 & depend on requests and paho-mqtt modules.
- Updated and tested code to work with both Python 2 and 3.
- Broke out errors into separate file, and added explicit data model classes.
- General cleanup and preparation for public release.
