Notebook Git storage

[alecandido]

I'd like more not to store bloated barely-readable disguised JSONs in the repo, but something that is closer to the manually written code.

The main choices are:

1. markdown with python code blocks
   • syntax highlighting for Python
   • no static analyzer, and possibly also other tools might not apply (like Black)
2. python with markdown in comments
   • no syntax highlighting for markdown

An option is using JupyText or similar, at least for part of the work.

Moreover, I'd like this to transparently pass through Git, so:

• [ ] when you pull/checkout files should be re-hydrated to notebooks
• [ ] when you commit notebooks they should automatically enter as stripped files

So, we need to write the code to do it, and integrate as Git hooks.