I think this might be a duplicate; anyhow - it would be a little weird to do this, because bzr already knows who made the changes - bzr log and bzr annotate should /already/ be showing correct information.
I think this might be a duplicate; anyhow - it would be a little weird to do this, because bzr already knows who made the changes - bzr log and bzr annotate should /already/ be showing correct information.