textium: relax ordering constraints on Rect<T>

textium/src/geometry.rs

@@ -13,7 +13,7 @@ pub struct Rect<T> {
 #[allow(dead_code)]
 impl<T> Rect<T>
     where T: Copy + Add<Output=T> + Sub<Output=T> + Mul<Output=T>
-             + Ord + PartialOrd
+             + PartialOrd
 {
     /// Returns a new rectangle given the upper-left corner and its width + height.
     pub fn new(x: T, y: T, w: T, h: T) -> Rect<T> {