Task types

In most cases, it is more convenient to use the decorators rather than instantiate Task instances directly.

smttask.task_types.RecordedTask([arg0, reason])
smttask.task_types.RecordedIterativeTask([...])	A specialized RecordedTask, meant for tasks which are repeatedly applied on their own output.
smttask.task_types.MemoizedTask([arg0, reason])	Behaves like a Task, in particular with regards to computing descriptions and digests of composited tasks.
smttask.task_types.UnpureMemoizedTask([...])	A Task whose output does not only depend on the inputs (and thus is not a pure function).