Method install

src/main/java/fieldbox/boxes/Keyboard.java:38–45

(Box root, Window w)

	public void dispatch(Box root, Window.Event<Window.KeyboardState> event) {

		// this is the set of keys that have been newly pressed, but we'd like to respond to key repeats as well
//		Set<Integer> pressed = Window.KeyboardState.keysPressed(event.before, event.after);
		Set<Integer> pressed = event.after.keysDown;

		Set<Character> typed = Window.KeyboardState.charsPressed(event.before, event.after);
		Set<Integer> released = Window.KeyboardState.keysReleased(event.before, event.after);
		Set<Integer> down = event.after.keysDown;

		released.stream().map(r -> ongoingDrags.remove(r)).filter(x -> x != null).forEach(drags -> {