Feature Suggestion: Keep a specific number of backups


As title says, if I specify a number of revisions to keep, prune gets rid of older-than revisions.

--keep-revision 20 would only keep the last 20 revisions and delete the older ones (so backup 21 would wipe out revision 1).


Alternate name -max-revisions.

Does this look more self-explanatory?

cc @Christoph since i’m bad with naming :stuck_out_tongue:.