for PyTorch v0.3.1

This version works in PyTorch v0.3.1 or earlier.

In the following papers, we used this version.

Kensho Hara, Hirokatsu Kataoka, and Yutaka Satoh,
"Can Spatiotemporal 3D CNNs Retrace the History of 2D CNNs and ImageNet?",
Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition, pp. 6546-6555, 2018.

Kensho Hara, Hirokatsu Kataoka, and Yutaka Satoh,
"Learning Spatio-Temporal Features with 3D Residual Networks for Action Recognition",
Proceedings of the ICCV Workshop on Action, Gesture, and Emotion Recognition, 2017.