Spread

• Adds Recorded<Event<T>> array factory method in RxTest. #1531
• Replaces global functions next, error, completed with Recorded.next, Recorded.error, Recorded.completed in RxTest. #1510
• Removes AnyObject constraint from Delegate parameter on DelegateProxy. #1442
• Adds ObservableType.bind(to:) overloads for PublishRelay and BehaviorRelay.
• Adds ControlEvent.asSignal().
• Adds UISegmentedControl.rx.enabled(forSegmentAt:) extension.
• Adds UIStepper.rx.stepValue extension.
• Adds error handling Hook to Single, Maybe and Completable. #1532
• Adds recordCallStackOnError to improve performance of DEBUG configuration.

Anomalies

• Changes return value of blocking version of single operator from E? to E. #1525
• Removes deprecation attribute from asSharedSequence.