Epub Export for Jupyter Book 2.0

[niemasd]

I'm using Jupyter Book 2.0 to build a book as a website and PDF as follows:

jupyter book build --html --pdf

In addition to PDF output, it would be nice if I could generate an Epub as well

Proposal

I propose adding a --epub option to jupyter book build to produce an Epub

Alternatively, in the past, I've compiled a LaTeX book to Epub, so instructions / guidance on how to build as LaTeX and then compile that to Epub would be fine as well

Additional notes

I asked about this on Discord, and I was instructed to make a GitHub Issue in the MystMD repo rather than Jupyter Book