2019-01-24: 2.0.0 (19f0616)
- Initial release

2019-01-25: 2.0.1 (c31e828)
- Fix handling of JSON errors for Python 2

2019-02-26: 2.0.2 (9b00366)
- Add support for --init-file option
- Check length of char parameters
- Log broker connections

2019-03-05: 2.0.3 (unknown)
- Fix crash on start without init-file.
- Remove unnecessary callback error message.
- Fix handling of timeouts.
- Translate symbols in callback responses.
