Spacyfishing

:bug: Bug fix

* Replace token by characters indexing to access and update a correct entity span with the same source offsets - 15 (thanks to davidberenstein1957)

:sparkles: new features

* Batch support with `.pipe()` implementation - 17 (thanks to davidberenstein1957 :nerd_face: :rocket: )

:hammer_and_wrench: Refactoring

* Update docstrings format

:book: Documentation

* Updated global instructions
* Remove outdated example to process a long text and replace by new `.pipe()` implementation;
* Add issues templates + contributing guide

:bug: Bug fix

* Update setup.py for Python 3.7
* Update JSON serialization and encoding strategy to query entity fishing;

:book: Documentation

* Update instructions and example script to process long text;

:bug: Bug fix

* Fix string concatenation exception with `url_wikidata` span attribute Lucaterre/spacyfishinged1c74d87132629171c3a123d8ed8488f3cea30a

:hammer_and_wrench: Refactoring

* Change default API endpoint for entity-fishing
* New strategy to extract `extra_info` that limit number of HTTP queries

:book: Documentation

* Updated global instructions
* Add example to process a long text
* Add a beautiful new logo (thanks to alix-tz :star_struck: )

* fix NIL clustering that contains entities already resolved ;
* updated tests & documentation;

Refactor

* new strategy for NIL entities with repass in disambiguate EF service with terms instead of text;
* improve doc attributes with additional infos from disambiguation service with text and terms;
* updated tests;
* updated documentation;
* clean and minimize code.

test new built