check for nvidia driver's sufficiency before checking for number of C…

…UDA devices (pytorch#1156)

import numpy before setting dlopen flags (pytorch#928)

Fix Engine::compute_dependencies

std::move fixes

add cc 3.0 to nccl (pytorch#594)

fix docs for torch.nn.functional.conv1d (pytorch#536)

tensor docs

python 2.7 fixes

docstrings for container and batchnorm

bumping to alpha-2