I found this out last week when I bought a Kobo Forma and started converting all of my favourite Markdown documents to epub to stick on there. Calibre even lets

I found this out last week when I bought a Kobo Forma and started converting all of my favourite Markdown documents to epub to stick on there. Calibre even lets you create a TOC by specifying the header regex (#, ##, etc for Markdown), it's great! had to edit a few manually to tweak layout and Calibre (https://calibre-ebook.com/ https://calibre-ebook.com/) has a nice editor for epubs built in.