Merge pull request #5 from gardum-game/const-new

Turn Volume::new() into const

src/lib.rs

@@ -212,7 +212,7 @@ pub struct Volume {
 }
 
 impl Volume {
-    pub fn new(min: Vec3, max: Vec3) -> Self {
+    pub const fn new(min: Vec3, max: Vec3) -> Self {
         Self {
             min,
             max,