[ephimetheus]

Which package do you mean? Last time I tried this it was kind of clunky.

[RestartKernel]

It's just called "markdown". I used it to make this template a few years ago:

https://gist.github.com/te-lang-wakker/b401bcf7f05658c624fab...

Only problem was that hyperlinks are converted into footnotes, but I'd be surprised if you can't hack your way around that.