Start creating Euler struct

src/euler.rs

@@ -0,0 +1,21 @@
+// TODO
+
+pub trait EulerAngles<T> {
+    // to_mat3
+    // to_mat4
+    // to_quat
+}
+
+pub struct Euler<T> { x: T, y: T, z: T }    // pitch / yaw / roll
+
+pub mod Euler {
+    #[inline(always)]
+    pub pure fn new<T>(x: T, y: T, z: T) -> Euler<T> {
+        Euler { x: move x, y: move y, z: move z }
+    }
+    
+    // from_mat3
+    // from_quat
+}
+
+pub impl<T> Euler<T>: EulerAngles {}