2.2.0
- Bump PHP requirement >= 7.4
- Bump phpunit 10.*
- Bump phpdocumentor 3.*
- Allow symfony/flex
- Add lauuch xdebug via VSCode
- Add required method return types, fix notices (PHP >=8.1)
- Add implicit casts, pass static analysis
- Add phpunit.xml config
- Fix all deprecation notices and warnings with PHP 8.*