Allow a more backward compatible behavior of max_len_single_sentence and max_len_sentences_pair (#3994)
Allow a more backward compatible behavior of max_len_single_sentence and max_len_sentences_pair (#3994)

* Allow a more backward compatible behavior of max_len_single_sentence and max_len_sentences_pair and

* The style and quality are now top-notch
huggingface/transformers,huggingface/transformers,huggingface/pytorch-transformers,huggingface/transformers,huggingface/transformers