Add support for importing math expressions from Markdown #4408
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The ability to typeset math expressions in markdown is now considered essential. Many other markdown-based note-taking software supports using TeX-like expressions for this, as demonstrated in #4387.
This PR adds proper support for importing math expressions from Markdown by leveraging the extension functionality of
marked
. A set of tokenizers is added tomarked
to parse these expressions and convert them into KaTeX-compliant HTML output.Closes #4387.