Feature Wish: Task dependencies

[fthommen]

From the available task-related DW plugins (do, todo, task), 'do' has the most potential, however a few things are missing to make it generally usable. One thing are task dependencies. It would be nice if tasks could be made dependent one from another (task A has to be finished before task B can be started/finished). Additionally these dependencies should be displayable e.g. by some indentation in the task table ('dolist')