Update model loading to support links
Update model loading to support links

Remove match_best_version check, fetch model language from meta instead
of directory name, and don't make too many assumptions – if model is
downloaded via downloader, version should match anyway. (Otherwise,
users should be free to add and load whichever models they want.)

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