- Change the name to factory is done
- Local variable type inference is used

Java source code demonstrate simple factory design pattern

Upgrade Mockito version

docs: add stefanbirkner as a contributor

Replace System Rules with System Lambda

System Lambda is more specific. It only wraps the part of the code that
produces the output.

docs: add mkrzywanski as a contributor

Filterer pattern

docs: add edycutjong as a contributor