v0.1.0

Release version 0.1.0

### Added
- Changelog, license, readme.
- Doxygen config file.
- [WvTest][] unit testing framework.
- Basic naive RRT star implementation without obstacles.
- Polygon obstacle, collision with obstacles.
- Use [Reeds and Shepp](https://github.com/ghliu/pyReedsShepp) in steer method.

[WvTest]: https://github.com/apenwarr/wvtest