The first sound you hear at the beginning of All That We Love, the new film directed by Austin-based filmmaker Yen Tan, is wind chimes tinkling in the breeze. The gentle stillness of this opening scene immediately reminded me of the hush that envelops the world when someone you love dies. In this case, that someone isn’t a parent, a sibling, or a spouse. It’s a pet.“My dog Tanner died ten years ago, and I was looking for films to see if there was something I could watch to help me go through what I was going through,” Tan says. “But I wasn’t able to find anything.”When he lost his Chinese Shar-Pei, Tan watched the classic tearjerker Marley & Me, which ends (spoiler alert!) with…