Negspacy

* fixes issue 11
* modify termsets to distinguish generic and clinical phrases, issue 10
* confirm support for spaCy 2.2.4

v-doi_zenodo
Not publishing to pypi

Adds ability for user to consider first tokens of noun chunks as negation terms.

* 7 Bug fix to fix issue in spacy 2.1.8 where using an entity ruler and not finding any entities would cause doc.is_nered to return false. This would make negspacy believe named entity recognition was not performed, throwing an error, incorrectly.
* moved patterns to termset lookup file, making it easier to support multiple languages. 6
* add additional patterns (contractions)

* Users can specify negation terminology
* Improved error handling