Adds tag v2.2.1 for pypi

Adds tag v2.2.0 for pypi

Adds tag v2.1.1 for pypi

Adds version 2.1.0 for PyPi

Merge branch 'master' of https://github.com/huggingface/pytorch-trans…

…formers

Adds tag VERSION for pypi

Release: 1.1.0

Adds tag 1.0 for pypi

update readme

Release: 0.6.2