Import/export Jupyter notebooks

[fonsp]

Exporting: export to markdown (another TODO item), then use Literate.jl.
Importing: not sure how to preserve Jupyter's markdown cells, might need to parse the notebook file.

But:

• should we add these dependencies to our package?
• cell order should be topological for jupyter. What to do with markdown cells?

EDIT

I made a web app to convert Pluto.jl notebooks ⇆ Jupyter notebooks:

https://observablehq.com/@olivier_plas/pluto-jl-jupyter-conversion

[fonsp]

Can be done in front-end or back-end.

[fonsp]

I made a web app to convert Pluto.jl notebooks ⇆ Jupyter notebooks:

https://observablehq.com/@olivier_plas/pluto-jl-jupyter-conversion

[mgiugliano]

The web app does not seem to work, right now, if the browser is Safari. A message appears at the bottom of the page: Notebook not responding. There may be an infinite loop that has crashed this notebook, or a notebook open in another tab. Click “Safe mode” to fix this notebook without running its code.

With Chrome, it seems to work.