move vector as a copy

pgfw/Vector.py

@@ -92,6 +92,9 @@ class Vector(list):
         if dy:
             self.y += dy
 
+    def get_moved(self, dx=0, dy=0):
+        return Vector(self.x + dx, self.y + dy)
+
     def place_at_origin(self):
         self.place(0, 0)