kombu renamed promise -> lazy
_lamportinfo moved to kombu.clocks.timetuple
security: Use kombu disable_insecure_serializers

Fixes security tests
Importing celery.task.trace now emits DeprecationWarning
Removes timer2 import side effect not needed in Celery

Removes use of default_timer
Hub now patches LamportClock to use dummy lock
__all__ is everywhere
Hub now patches and disables more mutexes

Fixes typo