master
don't use empty frame for pose in sdf files use hint for clang that if (0) is intentional
enable planar reflection in MinitaurGymEnv enable follow cam in other Gym locomotion environments add testing assets for multi-material obj files -> sdf conversion. Also use ER_NO_SEGMENTATION_MASK flag for TinyRenderer/EGL plugin renderer
add yapf style and apply yapf to format all Python files This recreates pull request #2192