Includes extended Hearst pattern list from new paper

The library now supports an extended list of patterns from this paper:

Seitner, J., Bizer, C., Eckert, K., Faralli, S., Meusel, R., Paulheim, H., & Ponzetto, S. "A large database of hypernymy relations extracted from the web." Proceedings of the 10th edition of the Language Resources and Evaluation Conference, 2016.

The supported set is optional, and by default, is not used (so it is "classic" by default).

Update to re-use POS tag

Speed up the processing by re-using the POS tagger.

Faster when used across multiple files.