In cases where the webhook payload doesn't have the username for the
author of a particular commit (this can happen if the author doesn't
have a GitHub account or the author's email is not associated with
their GitHub account), we now use the author's full name to format
messages.
For our Git integrations, we now only display the number of commits
pushed when the pusher also happens to be the only author of the
commits being pushed.
Part of #3968.
Follow-up to #4006.
For Git push messages, we now have a single space character between
the name of a commit's author and the number of commits by that
author, plus a period at the end.
Part of #3968.
Follow-up to #4006.
We now show a few new things:
(1) The number of commits pushed.
(2) Who authored the commits (just counts, not which specific ones, for brevity).
Add tests for case of multiple committers.
Part of #3968.