     let deletions = Session.deletions(
       old: Array(old.backgroundTasks),
       new: Array(model.backgroundTasks)
-    ).progressing().flatMap { $0.ID }
+    )
+    .progressing()
+    .flatMap { $0.ID }
     
     (complete + deletions).forEach {
       application.endBackgroundTask($0)

    Session.additions(
      new: model.scheduledLocalNotifications,
      old: old.scheduledLocalNotifications
    ).forEach {
      application.scheduleLocalNotification($0)
    }
    
    Session.deletions(
      old: old.scheduledLocalNotifications,
      new: model.scheduledLocalNotifications
    ).forEach {
      application.cancelLocalNotification($0)
    }
    

    }
  }
  
  fileprivate let application: UIApplication
  fileprivate var disposable: Disposable?
  fileprivate let output: BehaviorSubject<Model>
  fileprivate var model: Model

  init(intitial: Model, application: UIApplication) {
    self.application = application
    model = intitial
    output = BehaviorSubject<Model>(value: intitial)
  }
  
  func render(new: Model, old: Model) {
    model = new
    if model.isIgnoringUserEvents != old.isIgnoringUserEvents {
