* remove spring dep
move junit, logging, mockito under dep mgmt
* upgrade anti-corruption-layer deps
* async method invocation
* balking, bloc
* bridge to bytecode
* caching
* callback - cqrs
* component - health check
* hexagonal - metadata mapping
* rest of the patterns
* remove checkstyle, take spotless into use
* #2449 bump maven-checkstyle-plugin from 3.1.0 to 3.2.0 + resolve checkstyle issues
* remove FileSelectorJFrame.java to resolve checkstyle issue
* remove FileSelectorJFrame.java to resolve checkstyle issue
* remove FileSelectorJFrame.java to resolve checkstyle issue
* add refactored file with correct filename to resolve checkstyle issue
* add the test data
* change filenames from JFrame to Jframe for checkstyle
* fix code smell from sonar report
* add new testcases to improve the test coverage
* remove code smell
Ilkka Seppälä