tasks.Wait make default retries of 180 seconds regardless of timedelta

[dannwise]

Hey @codingjoe, congratulations on the library. Very nice work.

Could you tell me if there is a way to configure the task retry time?

While using it I've noticed that whenever a machine task returns False it will auto-retry within 180 seconds (for celery). Even if I make the flow goes with a tasks.Wait(timedelta(days=1)) for instance, the Wait task will return False and keep retrying every 180 seconds. So, tasks that should hang for long periods keep getting evaluated without need.