git-codereview: add mail -topic support
This adds a "-topic" flag to the mail subcommand that sets the Gerrit
topic for the pushed changes. Gerrit topics make it easier to group
related changes such as in a multi-change review.
Note that, like reviewers, the topic is sticky, so it is only
necessary to use mail -topic once for a given change.
Reviewed-by: Russ Cox <email@example.com>
2 files changed