OpenNMT-py v3.0.3
- fix loss normalization when using accum or nb GPU > 1
- use native CrossEntropyLoss with Label Smoothing. reported loss/ppl impacted by LS
- fix long-time coverage loss bug thanks Sanghyuk-Choi
- fix detok at scoring / fix tokenization Subword_nmt + Sentencepiece
- various small bugs fixed