Ensure Lombok generated code not longer counted for code coverage.

This merge commit introduces a change in the Jacoco, Surefire and Lombok configuration such that Lombok generated code does not longer count for code coverage.

This branch:

• Creates lombok.config for generating the lombok.@Generated annotation on all Lombok generated code.
• Ensures surefire will include the model package again. This was removed in 2016 because this package contained most Lombok generated code. Now this is automatically excluded.
• Updates Lombok and Jacoco to their newest stable versions.

When merged, we effectively implemented #53 (closed).