BREAKING CHANGE: The `libretime-celery` python package and service was renamed to `libretime-worker`. Make sure to remove the old python package and service.
BREAKING CHANGE: The worker `RMQ_CONFIG_FILE` environement variable has
been renamed to `LIBRETIME_CONFIG_FILEPATH`. In addition the systemd
working directory for the worker has changed from `/srv/airtime` to
`/var/lib/libretime/worker`.