Hi all,   Thanks for the great work on the ScrollTrigger plugin. Its a joy to use! I was wondering if its possible to have a custom offset for the pin functionality? I am animating a video based on the ScrollTrigger progress. Additionally, I want the video element to be pinned at the top. This works just great using pin: true   Now I ran into a small issue:  I want to start the animation when the element comes into view, but only have it pinned once it reaches the top of the