new const trait syntax

src/util/math.rs

@@ -1,13 +1,11 @@
 use std::ops::*;
 
-#[const_trait]
-pub trait LerpUtil {
+pub const trait LerpUtil {
     fn lerp(self, from: Self, to: Self) -> Self;
     fn lerp_inv(self, from: Self, to: Self) -> Self;
 }
 
-#[const_trait]
-pub trait DivOr {
+pub const trait DivOr {
     fn div_or(self, rhs: Self, other: Self) -> Self;
 }