> > It looks like nov-mode is not included in Emacs.  At least, grep-find
> > did not find it.  Is it part of ELPA?

FWIW, I think that it would make more sense to contribute the package to
GNU ELPA first:

- Greater flexibility of update cycle
- Still reasonably easy to install
- There's a significant dependency on esxml-query.el for XML/HTML
  traversal which I don't expect to get included into Emacs any
  time soon.

> > Why is it called 'nov-mode'?

Actually, I called it nov.el because it's for reading novels.  The
package prefix however is nov-, so the package name was turned into nov
when I submitted the package to MELPA.