#5 Task Prerequisites

[Matt Palmerlee]

Tasks should be able to be set to depend on the
completion of other tasks.
A Tree-like structure could be used to store the
relationships between parent and child tasks.

[Chris Embree]

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I am way into this enhancement. This SHOULD be fairly
simple. Maybe we just add a parent ID field in the tasks
table. It would require some logic (possibly recursive) to pull
parents and children when selecting any task. Actually only
when we want to see it in context.

Additional thought, Parent ID and an order field... so we can
move subtasks up and down.