* BAEL-4280: Initial commit for finding diff between lists
* BAEL-4280: Format
* BAEL-4280: Refactor
* BAEL-4280: Refactor not to use private methods
* BAEL-4280: Refactor based on editor comments
* BAEL-4280: Review round 2
* BAEL-4280: Use assertj
* BAEL-4280: Use assertj
* BAEL-4280: Shorter names for tests
* BAEL-4280: Remove HashSet as its not used anymore
* BAEL-4280: Use containsExactlyInAnyOrder for Set example
* BAEL-4280: Remove distinct method call
* BAEL-4280: Move impl to test
* BAEL-4280: Use containsExactlyInAnyOrder
* BAEL-4280: Rename test methods