nvie/rq — pull request #234 by marklap (2013-07-18 18:18:12+00:00)
Title: Use utc time for worker birth and death

Adds a birth_date attribute to Worker (UTC tz) and sets birth and death timestamps in UTC. This makes it more consistent with Job.created/enqueued/ended timestamps and is helpful when workers are in different timezones.

Locally logged message timestamps are remain untouched (localtime).