bug#43775: 28.0.50; Feature request: to include EPUB reading into main Emacs

[Vasilij Schneidermann]

>Is there any reason why?  esxml-query looks really cool.

It could be added as it's independent from esxml.el, I am the only contributor 
and it doesn't depend on anything from the rest of the esxml package. I expect 
some adjustments though before it can be included, both with regards to style 
(commit messages don't adhere to GNU standards) and architecture (most of the 
code is for parsing CSS selectors, it might make more sense to have a 
s-expression syntax instead and integrate it into xml.el).