Versions of optional dependecies

[Ashok B]

Please also mention, what versions of optional dependencies were used while testing. because the the latest versions of these optional dependencies are causing dependency issues.

Optional Dependencies
PyTorch Mesh self-intersection for interpenetration penalty
Download the per-triangle part segmentation: smplx_parts_segm.pkl (ctrl/cmd +F for the filename)
Trimesh for loading triangular meshes
Pyrender for visualization