https://github.com/pytorch/tutorials/blob/cd4953d503eaf7194092a9f8945e54f6b30a909a/LICENSE#L3 https://github.com/pytorch/tutorials/blob/23af056a74f00b80265795a2252e9ae1f02aa735/conf.py#L100 
