WWDC 2020 | Build with iOS Pickers, Menus and Actions

📝 UISlider, ProgressView의 Design update UIAcitivityIndicatorView : New simpler design, Color API UIPickerView : Update styling UIPageControl : Bakcground, unlimited pages, custom indicators, multiple styles indicators ColorPicker : eye dropper tool DatePicker : macOS 와 같은 디자인을 iOS, iPadOS에서도 사용가능 Menu UIBarButtonItem / UIButton : init에서 action을 대입할 수 있게 됨.