Open Stack

Howdy folks.

What's the protocol when a change set has more than one (significant)
contributor?  I've seen this "Co-Authored-By" tag in commit messages -
under what circumstances is it necessary/appropriate to use that?  What
official or procedural significance does it have, if any?

Is it possible to change the owner of a change set (e.g. if someone else
has become the primary contributor, or if the original owner has left
the project)?  Is that recommended?

Is there any other process or metadata that applies to this topic?

Thanks,
Eric Fried (efried)