TIFF Opens With Siân Heder’s Crowd-Pleasing ‘Being Heumann’ — and Apple Has Its Next Oscar Contender

“Being Heumann” opens on a New York sidewalk that doesn’t allow Judy Heumann to climb it. There’s no curb cut or ramp. Just a woman and her wheelchair. Director Siân Heder holds on it — and then Judy gives the middle finger. And it…