Merge pull request maciejkula#112 from maciejkula/pytorch-v0.4.0

Upgrade to Pytorch v0.4.0

Merge pull request maciejkula#97 from maciejkula/bump_version

Bump version to 0.1.4.

Bump version to v0.1.3.

Merge pull request maciejkula#59 from maciejkula/v0.1.2-release

Prepare for v0.1.2 release.

Merge pull request maciejkula#19 from maciejkula/bump_0.1.1

Bump to 0.1.1.

Remove all install_requires.