Dear maintainers,

This is a bugfix for the emacs-28 branch, prompted by the discussion in
bug#46971.  It changes the default behaviour of the modus-themes to not
inherit the 'fixed-pitch' face in various spacing sensitive faces.  This
now becomes an opt-in feature and its utility is documented in the doc
string of the new user option as well as the manual.

Note that I have already made these changes to the modus-themes repo and
was planning to sync them with the Emacs 'master' branch upon the next
release of the project (maybe in a month from now).

Please let me know if you think this should be applied to emacs-28.

All the best,
Protesilaos

-- 
Protesilaos Stavrou
https://protesilaos.com