OpenNMT-tf 2.2.0

OpenNMT-tf 2.2.0

New features

• Return detokenized predictions when using an in-graph tokenizer
• Injection of the special tokens <s> and </s> for language models can be configured with the data parameter sequence_controls

Fixes and improvements

• Fix the batch size in multi GPU training that was not scaled by the number of devices
• When updating vocabularies, mirror the existing embeddings distribution for newly created embeddings
• Fix error when running onmt-tokenize-text and onmt-detokenize-text scripts
• Transformer decoder now always returns the attention on the first source
• Calling model.initialize() also initializes the decoder (if any)