ⓒCourtesy of New York Film Festival This year’s Main Slate spans 31 countries and brings together new works by renowned auteurs and returning NYFF filmmakers, 17 directors making their Main Slate debut, and acclaimed selections from leading film festivals around the world. The lineup includes three world premieres—Ava DuVernay’s “14th“, Tony Gilroy’s “Behemoth!“, and Mani…