Add raw-window-handle support to Winit 0.19 and bump version (#1225)

* Add raw-window-handle support to Winit 0.19 and bump version

* Hopefully fix linux and ios builds

src/platform/windows/window.rs

@@ -35,6 +35,8 @@ use platform::platform::raw_input::register_all_mice_and_keyboards_for_raw_input
 use platform::platform::util;
 use platform::platform::window_state::{CursorFlags, SavedWindow, WindowFlags, WindowState};
 
+use raw_window_handle::{windows::WindowsHandle, RawWindowHandle};
+
 /// The Win32 implementation of the main `Window` object.
 pub struct Window {
     /// Main handle for the window.
@@ -268,6 +270,15 @@ impl Window {
         self.window.0
     }
 
+    #[inline]
+    pub fn raw_window_handle(&self) -> RawWindowHandle {
+        let handle = WindowsHandle {
+            hwnd: self.window.0 as *mut _,
+            ..WindowsHandle::empty()
+        };
+        RawWindowHandle::Windows(handle)
+    }
+
     #[inline]
     pub fn set_cursor(&self, cursor: MouseCursor) {
         self.window_state.lock().unwrap().mouse.cursor = cursor;