#40 Issue 40: [Logic] Clawback for Milestone Failure


Description:
If a milestone (Issue 3) is not met by a certain date, allow the DAO to "clawback" the stream funds that were accrued but not yet withdrawn by the grantee.
Acceptance Criteria:

[ ] Add milestone_deadline to the logic.

[ ] If now > deadline and !milestone_met, allow Admin to reset the grantee's withdrawable_balance.
Labels: logic, hr