Summary:
No major API changes since the last release. Cutting a new release since we'll be merging significant (possibly breaking) changes to logging, data loading and the masked LM implementation soon.
Pull Request resolved: https://github.com/pytorch/fairseq/pull/891

Differential Revision: D16377132

Pulled By: myleott

fbshipit-source-id: f1cb88e671ccd510e53334d0f449fe18585268c7