Euler/Quaternion conversion do not wrap over -90 #563
Description
Seems like it somewhere clamping to [90;-90]
use cgmath::Deg;
use cgmath::Euler;
use cgmath::Quaternion;
use cgmath::Rotation3;
#[test]
fn test1() {
let b = Deg(-91.234);
assert_eq!(b.0, -91.234);
let q = Quaternion::from_angle_y(b);
let c = Euler::from(q);
/*
assertion `left == right` failed
left: -91.234°
right: -90.0°
*/
assert_eq!(Deg(-91.234), Deg::from(c.y))
}