Fix
* Fix merge errors of version ([`a32f9ed`](https://github.com/JonasMuehlmann/pyaoi/commit/a32f9edf6d6cba8594a6b7363215f944deea4149))
* Fix merge errors of license and version ([`6473b04`](https://github.com/JonasMuehlmann/pyaoi/commit/6473b04086f786ec587185d3c9aea1fe88e2aee5))
Documentation
* Check box for implementation of `shift_left()` and `shift_right()` ([`7273388`](https://github.com/JonasMuehlmann/pyaoi/commit/7273388fa8a731eeda2cf4a6b8b1790fb4c35186))