Write documentation for new iced_winit API

winit/src/application.rs

@@ -1,3 +1,4 @@
+//! Create interactive, native cross-platform applications.
 use crate::{
     conversion, mouse, Clipboard, Command, Debug, Executor, Mode, Proxy,
     Runtime, Settings, Size, Subscription,
@@ -72,6 +73,10 @@ pub trait Application: Program {
     }
 }
 
+/// Runs an [`Application`] with an executor, compositor, and the provided
+/// settings.
+///
+/// [`Application`]: trait.Application.html
 pub fn run<A, E, C>(
     settings: Settings<A::Flags>,
     compositor_settings: C::Settings,
@@ -254,6 +259,8 @@ pub fn run<A, E, C>(
     })
 }
 
+/// Handles a `WindowEvent` and mutates the provided control flow, keyboard
+/// modifiers, viewport, and resized flag accordingly.
 pub fn handle_window_event(
     event: &winit::event::WindowEvent<'_>,
     window: &winit::window::Window,