Add testing scripts to catch broken notebooks.

noxfile.py

+import nox
+
+
+@nox.session(python=["3.9"], reuse_venv=True)
+def nbtest(session):
+    session.install("-r", "requirements.txt")
+    session.run("bash", "test.sh", ".", external=True)

requirements.txt

+IPython
+jupyter
+matplotlib
+numpy
+pandas
+pydicom
+scipy
+seaborn
+scikit-image
+scikit-learn

test.sh

+#!/bin/bash
+
+rm -f tested.lst
+git ls-files $1 | grep ipynb | xargs -I {} sh -c 'echo {} >> tested.lst; if jupyter nbconvert --to html --execute {}; then echo {}; fi' > ok.lst