Add additional optional argument to Matrix.transformPoint(point:Point):Point function

Hi Air team,

Can you please add optional result:Point argument to the Matrix.transformPoint(point:Point😞Point function so that function does not create new Point object every time is called if you pass a Point object as the second argument.

I have one library when that is using Matrix.transformPoint function a lot and it creates so much Point objects that it becomes so slow and unusable because gc is triggered all the time.

Thanks,

Caslav