feat(points/2d): relax bounds on Point2D::new

Copy was needed for the methods _after_ `new`

Author: ada4a

src/points/two_d.rs

@@ -17,11 +17,13 @@ impl<T: Debug, U: Debug> Debug for Point2D<T, U> {
     }
 }
 
-impl<T: Copy, U: Copy> Point2D<T, U> {
+impl<T, U> Point2D<T, U> {
     pub fn new(x: T, y: U) -> Self {
         Self(x, y)
     }
+}
 
+impl<T: Copy, U: Copy> Point2D<T, U> {
     pub fn x(&self) -> T {
         self.0
     }