Ignore some generated headers in output cells, or collapse TOC entries about jupyterlab-toc HOT 5 OPEN

@mlucool This was an early feature request for this extension (back when it was a lot simpler, I might add :) ), c.f. #15. The idea was to programmatically generate headers, possibly interpolating the contents of some kernel variables.

I'm don't think I agree that it is at odds with the plugin, generating headers with code seems like a reasonable thing to do. I do think we could expose an option so that users can choose whether they want to generate entries from code cell outputs.

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Interesting, thanks for the info @kenjioman.
cc @markellekelly and @zuoyuanh, something to consider in the work you are doing...

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Why would cell output be considered part of the table of contents? Feels somewhat at odds with the plugin

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The linked issue seems to imply one type of cell render (Markdown) and not all HTML should act as a TOC. Could we restrict this further in some way so that all HTML isn't picked up? Given the different usecases, the idea of a setting (per notebook? globally?) is a good option. Would it default on or off?

The collapse cell feature has some bugs with this. Try with this example:

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#54 may also be worth thinking about at the same time

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