pre-commit has been added to the GitHub Actions workflow in this repository. pre-commit allows you to run multiple checks, such as black and checking the REUSE licensing compliance, both locally and on GitHub Actions with one command.
You can run pre-commit locally with `pre-commit run --all-files`
To use in CircuitPython, simply install the [Adafruit CircuitPython bundle](https://circuitpython.org/libraries).
To use in CPython, `pip3 install adafruit-circuitpython-hcsr04`.
Read the [docs](http://circuitpython.readthedocs.io/projects/hcsr04/en/latest/) for info on how to use it.