auto-render markdown cells

[rodrigo-j-goncalves]

This may be subjective or philosophical. I find the feature of having to manually run markdown cells a bit annoying and unnecessary: There is nothing to 'run' or 'execute', just render. I don't want to take care of the markdown 'execution', I want to focus on my actual programming (eg. Python code).

It would be great if there was an option in the configuration to have JupyterLab automatically render the markdown cells when they lose focus. This behavior would be the same as Google Colab, which makes much more sense to me: You click on a markdown cell to edit it, and it auto-renders when you leave the cell. No need to run it manually or to "Run all markdown cells".

This would also solve the problem that appears some times when the hyperlinks of the TOC don't work and makes the navigation through the notebook cumbersome (I guess that is why the "Run all markdown cells" option exist)

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