Fix model-final/model-best meta from train CLI (#5093)
Fix model-final/model-best meta from train CLI (#5093)

* Fix model-final/model-best meta

* include speed and accuracy from final iteration
* combine with speeds from base model if necessary

* Include token_acc metric for all components

explosion/spaCy,honnibal/spaCy,explosion/spaCy,spacy-io/spaCy,honnibal/spaCy,explosion/spaCy,explosion/spaCy,spacy-io/spaCy,spacy-io/spaCy,honnibal/spaCy,spacy-io/spaCy,spacy-io/spaCy,explosion/spaCy,honnibal/spaCy,explosion/spaCy,spacy-io/spaCy