Enhancment: keep TOC when exporting to HTML

[andrea-vandin]

Dear all,

thank you very much for this great plugin. I often export my notebooks in HTML. It would be great to have the TOC preserved in the exported HTML file. At least the numbering of the (sub)-sections

[vadella]

If you use jupyter_contrib_nbextensions you can use jupyter nbconvert FILE.ipynb --template toc2

[stefansimik]

Yeah, that works, but it is much more complicated - requires installing additional libraries.
On top of that, these libraries are incompatible now and there are a lot of compatibility problems.
It would be much elegant to add TOC on top of the HTML file (or even better in separate left column).