HorizontalLayout, VerticalLayout: when justified, resets size of items so that an accurate measurement is taken instead of an old justified size
ScreenNavigator, StackScreenNavigator: fixed issue where the active screen wasn't properly cleared when removing all screens (or the ID of the active screen) (closes #1026)
ScreenNavigator, StackScreenNavigator: now throws error when you attempt to remove a screen that is currently in transition.
TextArea: fixed issues caused by making Scroller a focusable component (closes #1023)
MetalWorksDesktopTheme, MinimalDesktopTheme: fixed bad padding on TextArea. actually needs an inner padding for the text editor view port (references #1030)