Saving notebooks with output state

[psychemedia]

At the moment, the notebooks are in markdown format and rendered via jupytext. It would make sense for students to be able to save notebooks with output cells content intact (not sure about the simulator?).

Should there be a production branch that converts the md to ipynb and then distribute the ipynb?

[psychemedia]

We can also synch jupytext paired files by running the following command in the content/ directory:

jupytext --sync 0*/*.ipynb