Really impressed at the speed with which Hugging Face ported this to their transformers library -- Google released the model and source code Oct 21 [1] and it was available in the library just 8 days later [2].
[1] https://github.com/google-research/google-research/commit/b5...
[2] https://github.com/huggingface/transformers/commit/c0c208833...