Draft Shell:request_redraw API

... and implement `TextInput` cursor blink 🎉

native/src/subscription.rs

@@ -1,5 +1,6 @@
 //! Listen to external events in your application.
 use crate::event::{self, Event};
+use crate::window;
 use crate::Hasher;
 
 use iced_futures::futures::{self, Future, Stream};
@@ -33,7 +34,7 @@ pub type Tracker =
 
 pub use iced_futures::subscription::Recipe;
 
-/// Returns a [`Subscription`] to all the runtime events.
+/// Returns a [`Subscription`] to all the ignored runtime events.
 ///
 /// This subscription will notify your application of any [`Event`] that was
 /// not captured by any widget.
@@ -65,7 +66,10 @@ where
             use futures::stream::StreamExt;
 
             events.filter_map(move |(event, status)| {
-                future::ready(f(event, status))
+                future::ready(match event {
+                    Event::Window(window::Event::RedrawRequested(_)) => None,
+                    _ => f(event, status),
+                })
             })
         },
     })