Epics should not reuse ids of deleted epics
- When creating an epic, it appears that the id associated with the epic takes on one plus the largest existing epics' ids.
- This means that if create an epic, delete it, and then create another one, it will reuse that id.
- (Currently, the system doesn't appear to "fill in gaps" though.)
- This is not good behavior. Because later on when we do mentioning epics and just in general when we reference an epic, we do so by id. If an epic is deleted, that id should never be reused.
- This not-reusing-ids behavior appears to be the case for issues. We should just do the same for epics.