Make nalgebra-glm compatible with no_std.
and keep in mind it is possible to convert, e.g., an `Isometry3` to a `Mat4` and vice-versa (see the [conversions section](#conversions)).
*/
+#![cfg_attr(not(feature = "std"), no_std)]
+
extern crate num_traits as num;
#[macro_use]
extern crate approx;
