+ `title` (optional) - The title of a milestone
+ `description` (optional) - The description of a milestone
+ `due_date` (optional) - The due date of the milestone
-+ `closed` (optional) - The status of the milestone
++ `state_event` (optional) - The state event of the milestone (close|activate)
# title (optional) - The title of a milestone
# description (optional) - The description of a milestone
# due_date (optional) - The due date of a milestone
- # state (optional) - The status of the milestone (close|activate)
+ # state_event (optional) - The state event of the milestone (close|activate)
# Example Request:
# PUT /projects/:id/milestones/:milestone_id
put ":id/milestones/:milestone_id" do