Added todo.

src/monitor.c

@@ -142,6 +142,8 @@ void _glfwInputMonitorChange(void)
                 // This monitor was connected before, so re-use the existing
                 // monitor object to preserve its address and user pointer
 
+                // TODO: Transfer monitor properties
+
                 _glfwDestroyMonitor(monitors[i]);
                 monitors[i] = _glfwLibrary.monitors[j];
                 _glfwLibrary.monitors[j] = NULL;