Notebook outputs pollute commits

[rland93]

This is sort of minor, but I hate that this repo is listed as a Jupyter Notebook project.

That's because if you commit a notebook, all notebook outputs are also included in commits, which makes notebooks like 12412513123 "lines of code" even though most of it is junk.

So maybe we can find a way to scrub outputs before committing without having to manually clear them.

[rland93]

There's not an easy way to do this automatically, but jupytext:

https://jupytext.readthedocs.io/en/latest/index.html

comes close. I'm going to commit notebooks in its "light" format, so that they show up as scripts.

[rland93]

Fixed.