summary: print unstable, bumped and divergent as unconditionally plural...
summary: print unstable, bumped and divergent as unconditionally plural
This aligns with the unconditional plural output for the update line contents,
as well as the incoming/outgoing bookmarks line. It also matches the message
in evolve's summary hook as of 4f83b2d2d20d. (Though I thought this was removed
recently?)
