On Windows, fix bug where RedrawRequested would only get emitted every other iteration of the event loop (#1366)

* Fix bug causing RedrawRequested events to only get emitted every other iteration of the event loop.

* Initialize simple_logger in examples.

This PR's primary bug was discovered because a friend of mine reported
that winit was emitting concerning log messages, which I'd never seen
since none of the examples print out the log messages. This addresses
that, to hopefully reduce the chance of bugs going unnoticed in the
future.

* Add changelog entry

* Format

examples/timer.rs

@@ -7,6 +7,7 @@ use winit::{
 };
 
 fn main() {
+    simple_logger::init().unwrap();
     let event_loop = EventLoop::new();
 
     let _window = WindowBuilder::new()