Whill

Summary

- Add set_battery_saving command
- Release to PyPI [whill 1.4.0](https://pypi.org/project/whill/1.4.0/)

Summary

- Add WHILL Model CR2 to the product lineup
- Add send_velocity command
- Release to PyPI [whill 1.3.0](https://pypi.org/project/whill/1.3.0/)

Summary
- Disable IMU
- PyPI suppport

Summary
First release which is targeting WHILL Hackathon.

Included
- Basic API for using [WHILL Control System Specification](https://github.com/WHILL/whill_control_system_protocol_specification).
- Support for Python3 on Windows 10.

Not Included.
- Support for Other OS (e.g. Mac OS X, Ubuntu).
- Support for Python2.
- Self-explanatory docstring.
- Setup for PyPI (i.e. support for `pip install~~~`).