* extractor

* decoding

* decoding, error handling

* clean up

* klint

* detekt

* simplify condition

* comment failing unit test

* unit test

* change lib

* Unit tests for RA/PCRCoronaTest.isFinal

* Add license text.

* add header

* clean up

* merge

* comments

* klint

* revert version change

Co-authored-by: Matthias Urhahn <matthias.urhahn@sap.com>