Requirements.txt requires updating pytorch version to torch==1.8.0

[dzeitman]

numpy
torch==1.8.0
torchvision
Pillow
flask
scikit-image
opencv-python
tqdm
imageio
yacs
pyopengl
imageio-ffmpeg
human-det @ git+https://github.com/Project-Splinter/human_det
human-inst-seg @ git+https://github.com/Project-Splinter/human_inst_seg
implicit-seg @ git+https://github.com/Project-Splinter/ImplicitSegCUDA
streamer-pytorch @ git+https://github.com/Project-Splinter/streamer_pytorch