[JOSS Review] Consider using black (or similar) to format the codebase

[samuelduchesne]

I generally recommend python developers to use a strict code formatter such as [black](https://black.readthedocs.io/en/stable/) to help the development process. The idea is simple: if the code is always formatted the same way, you are only committing actual code changes instead of formatting changes (black spaces, tabs, etc.)

[AlexanderJuestel]

@samuelduchesne processing.py was formatted using black in d133e51

Thanks for the suggestion!

[samuelduchesne]

Great, you can also add black to your pyproject.toml if you want to specify a different configuration

[samuelduchesne]

Also, you should format all the codebase with black not just the processing.py file - ie run black . from the root of the repo

[AlexanderJuestel]

Also, you should format all the codebase with black not just the processing.py file - ie run black . from the root of the repo

Codebase was formatted in 776ce06

[AlexanderJuestel]

Great, you can also add black to your pyproject.toml if you want to specify a different configuration

I added black to the pyproject.toml in f562220