Added Vector2D.toVector(double y).

src/main/java/com/sk89q/worldedit/Vector2D.java

@@ -575,6 +575,15 @@ public class Vector2D {
         return new Vector(x, 0, z);
     }
 
+    /**
+     * Creates a 3D vector by adding the specified Y component to this vector.
+     *
+     * @return Vector
+     */
+    public Vector toVector(double y) {
+        return new Vector(x, y, z);
+    }
+
     /**
      * Gets the minimum components of two vectors.
      *