2.1.1
Add support for parameter userVisibleDataFormat when signing.
Add minimum required php version 7.2.0 because required by guzzlehttp/guzzle@7.0.1.
Add support for phpunit/phpunit@9.5.* to be able to support php@8.0^.
Add latest test certificate from BankID, did not get the tests to run with the current cert in repo.