Add files for demonize celery via systemd.
Edit tutorial for demonizing
Fix tutorial
Fix tutorial
More fixes
Fix
Add in tutorial
Remove celery config file
The help about environment variables
The help about environment variables
Commented out the "Environment" by default
Handle any MongoDB connection option inline
Fixes bug with solo/threads pool.  Closes #1548
Updates changelog for 3.0.24
events.State: Show timestamps in drift warning
flakes
Cosmetics
flakes
app.conf.find now returns namedtuple
timer data now namedtuple