Let a user run a specific task inside flow

[fridex]

Currently, the only execution unit that can be run from user-point-of-view is a flow (group of tasks). It would be nice to let a user run a specific task in a flow. This will require to resolve all the tasks that are required (time or data dependencies of targeted task), run them (ideally optionally) and optionally run tasks that are affected by targeted task:

run_task('myFlow', task='Task3', node_args={'foo': 'bar'}, run_subsequent=True)

[fridex]

Closing as this is already implemented, see run_flow_selective().