Add conversion from Vector3

Vector2.cpp

@@ -5,6 +5,7 @@
 #include "Vector2.h"
 #include "Angle.h"
 #include "FloatSingle.h"
+#include "Vector3.h"
 
 #if defined(AVR)
 #include <Arduino.h>
@@ -27,6 +28,11 @@ Vector2::Vector2(Vec2 v) {
   y = v.y;
 }
 
+Vector2::Vector2(Vector3 v) {
+  x = v.x;
+  y = v.z;
+}
+
 Vector2::~Vector2() {}
 
 const Vector2 Vector2::zero = Vector2(0, 0);

Vector2.h

@@ -24,6 +24,8 @@ typedef struct Vec2 {
 } Vec2;
 }
 
+class Vector3;
+
 /// <summary>
 /// A 2-dimensional vector
 /// </summary>
@@ -46,6 +48,8 @@ public:
   /// <param name="v">The C-style Vec</param>
   Vector2(Vec2 v);
 
+  Vector2(Vector3 v);
+
   ~Vector2();
 
   /// <summary>