Add TODO & bump version

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "winit"
-version = "0.5.6"
+version = "0.5.7"
 authors = ["The winit contributors, Pierre Krieger <pierre.krieger1708@gmail.com>"]
 description = "Cross-platform window creation library."
 keywords = ["windowing"]

src/os/unix.rs

@@ -15,6 +15,7 @@ use wayland_client::protocol::wl_surface::WlSurface;
 
 pub use api::x11;
 
+// TODO: do not expose XConnection
 pub fn get_x11_xconnection() -> Option<Arc<XConnection>> {
     match *UNIX_BACKEND {
         UnixBackend::X(ref connec) => Some(connec.clone()),