[WIP] more refactoring & unit testing

example_inputs/marek_kowalski_pojechal_do_wroclawia.ccl

requirements.txt

src/anonymizers/english_anonymizer.py

src/anonymizers/polish_anonymizer.py

src/anonymizers/russian_anonymizer.py

src/ccl_parser.py

src/detectors/date/date.py

src/detectors/date/en.py

src/detectors/date/pl.py

src/detectors/date/ru.py

src/detectors/email/email.py

src/detectors/ner/__init__.py

src/detectors/ner/ner.py

src/detectors/ner/pl_liner_n5.py

src/detectors/phone/phone.py

src/detectors/url/url.py

src/detectors/user/user.py

src/dictionaries/__init__.py

src/dictionaries/pl_ner_replacements.py

src/entity_types.py