I don't have a remote project so I can't test it.

> Setting aside the zombie name for now, hHow about calling 'project-auto-forget-zombie-projects'
> 'project-prune-zombie-projects' and rather than boolean, accept symbols that could include something
> like 'list-read 'list-write nil so users can decide when pruning happens.

I've added them and also an `all' option which mix `list-read' and
`list-write'.

> Could we rename report-message to no-message and change when to unless to keep it uniform?  The
> word report suggests things other than merely allowing messages.

I've added it as an additional optional argument.

-- 
                                          - E.G via GNU Emacs and Org.