Logically oder defuns.
Add support for highlighting non-ASCII space and hyphen chars.
Add autoload cookies.
Add the `folio-font-lock-fontify-window' defun.
Docstrings.  Add reminder.
Eagerly refontify when `folio-toggle-nobreak-char-display'.
Fix `folio-dictionary-list' for cases when no dictionary is available
for a particular engine.  Resolve dependency to `delete-duplicates'.
Polish error messages.
Handle aspell's undocumented response code ?\?, too.
With aspell use the two letter BCP 47 code `de' for German dictionary language.