Fix Spherical reference

Polar.h

@@ -7,6 +7,10 @@
 
 struct Vector2;
 
+namespace Passer {
+
+struct Spherical;
+
 /// <summary>
 /// A polar vector
 /// </summary>
@@ -37,6 +41,7 @@ public:
   Polar(float angle, float distance);
 
   Polar(Vector2 v);
+
   Polar(Spherical s);
 
   /// <summary>
@@ -99,7 +104,8 @@ public:
   /// <returns>The rotated vector</returns>
   static Polar Rotate(Polar v, float angle);
 };
-
+} // namespace Passer
+#include "Spherical.h"
 #include "Vector2.h"
 
 #endif