Vector improvements (#67)

* clean up math.h and attempt to improve existing vector maths

* fix broken matches and match new stuff

include/System/Random.hpp

@@ -1,8 +1,8 @@
 #pragma once
 
 #include "global.h"
+#include "math.hpp"
 #include "types.h"
-#include <nitro/math.h>
 
 struct Random {
     /* 00 */ u16 mRandomValue[4];