PSA: 'Ansi HTML Adapter' supports decorations boxes

[AeliusSaionji]

Ansifilter is a great tool, but as noted here,
https://github.com/dandavison/delta/blob/master/manual/src/tips-and-tricks/export-to-html.md?plain=1#L14

aha has a leg up in this context. Let delta's box shine!
Another nicety: aha -b sets the background black and foreground white, without having to fiddle with CSS

Still no hyperlinks (yet) though.
https://github.com/theZiz/aha