Summary: Add ioPath as a dependency of PyTorch3D in preparation for using the new PathManager.
Reviewed By: nikhilaravi
Differential Revision: D25372971
fbshipit-source-id: d8aa661d2de975e747dd494edc42bf843990cf68
Summary: Use a more recent PyTorch to build the documentation.
Reviewed By: nikhilaravi
Differential Revision: D25679756
fbshipit-source-id: 83d647f709337110d39886eaa6aad2565d740c6d