* add new class and fields
* refactor LanguageIdentifier
* set ExtendedSentenceRange in lt
* add ExtendedSentenceRange to CheckResults
* implement ExtendedSentenceRange and add them to the response json;
Update tests (disable them) TODO: implement tests
* start implement tests for MultiLanguage
* Update Tests
* Update Tests
* remove old tests
* format files and cleanup
* Update PR
