I've been thinking that perhaps we can use goldmark's AST as a middleground for converting HTML to MD.

• Parse HTML using net/html
• Walk through the tree and convert it into a goldmark ast node
• Use https://github.com/Kunde21/markdownfmt to convert from GoldmarkAST to markdown text.

I've been working on converting a different format into markdown, this method has been quite smooth as far as I can parse to AST correctly.

I was thinking that we could do a similar thing for HTML. Bonus point is that it'll make it easier to extend and support many markdown flavours and extensions. GFM is already covered.

This will likely be a breaking change since something like setting custom options will no longer work the same way.

If you think it makes sense I could work on it once I have less work on my hands.