Make morphology use int attributes internally
Make morphology use int attributes internally

The morphology class was calling the lemmatizer inconsistently,
which some string-valued attributes. This caused Issue #903.

recognai/spaCy,spacy-io/spaCy,honnibal/spaCy,explosion/spaCy,raphael0202/spaCy,explosion/spaCy,raphael0202/spaCy,oroszgy/spaCy.hu,honnibal/spaCy,explosion/spaCy,oroszgy/spaCy.hu,raphael0202/spaCy,aikramer2/spaCy,aikramer2/spaCy,recognai/spaCy,raphael0202/spaCy,spacy-io/spaCy,recognai/spaCy,spacy-io/spaCy,oroszgy/spaCy.hu,aikramer2/spaCy,Gregory-Howard/spaCy,aikramer2/spaCy,spacy-io/spaCy,honnibal/spaCy,recognai/spaCy,recognai/spaCy,Gregory-Howard/spaCy,honnibal/spaCy,Gregory-Howard/spaCy,aikramer2/spaCy,raphael0202/spaCy,spacy-io/spaCy,Gregory-Howard/spaCy,explosion/spaCy,raphael0202/spaCy,Gregory-Howard/spaCy,oroszgy/spaCy.hu,Gregory-Howard/spaCy,explosion/spaCy,explosion/spaCy,recognai/spaCy,aikramer2/spaCy,spacy-io/spaCy,oroszgy/spaCy.hu,oroszgy/spaCy.hu