message: Update mouse cursor icon properly in `iced_winit`
diff: use crate::{
  column, conversion, input::mouse, renderer::Windowed, Cache, Column,
  - Element, Event, Length, UserInterface,
  + Element, Event, Length, MouseCursor, UserInterface,
  };
  pub trait Application {
  @@ -44,6 +44,7 @@ pub trait Application {
  let mut primitive = user_interface.draw(&mut renderer);
  let mut cache = Some(user_interface.into_cache());
  let mut events = Vec::new();
  + let mut mouse_cursor = MouseCursor::OutOfBounds;
  window.request_redraw();
  @@ -91,7 +92,15 @@ pub trait Application {
  window.request_redraw();
  }
  event::Event::RedrawRequested(_) => {
  - renderer.draw(&mut target, &primitive);
  + let new_mouse_cursor = renderer.draw(&mut target, &primitive);
  +
  + if new_mouse_cursor != mouse_cursor {
  + window.set_cursor_icon(conversion::mouse_cursor(
  + new_mouse_cursor,
  + ));
  +
  + mouse_cursor = new_mouse_cursor;
  + }
  // TODO: Handle animations!
  // Maybe we can use `ControlFlow::WaitUntil` for this.
  