Look into pytest-notebook

[billbrod]

pytest-notebook looks like a good way to re-run notebooks and check that their output hasn't changed. Could be useful to add that to our tests, since we want to make sure that we don't break the tutorial notebooks with any changes we make (see if we can select some cells to have different outputs maybe? would we want to know anytime the output changes or just if you can't run the notebooks anymore?)

[lyndond]

We should totally try it out. I know after eigendist changes, the 'from autodiff to eigendistortions' notebook is broken.

[billbrod]

treebeard looks like another package that does something similar, should compare (and it has a way better name)

[billbrod]

Using treebeard instead.