Dependencies

Ability to indicate that one feature is dependent on another being completed first.

Allow cross-linking dependent tasks using markdown [link syntax] - description editor should detect the user inserting a link and offer matching features from the same project by title for completion.

Adding a link should automatically add that feature as a dependency, but the user should be able to quickly remove dependencies before submission. Maintainers should also be able to edit the dependencies as needed.

While adding this functionality, comments should also provide the same assistance for linking to features.