Mockito complaining with Java 11/Gradle 5

[thomasnield]

With Java 11, reflection deprecation warnings are popping up in Gradle 4. Compile errors happen with Gradle 5. Consider ridding Mockito dependency if it cannot be resolved easily.

[geodab]

The illegal reflective access warnings will disappear if the version of mockito-core is bumped up to the latest version of 3.3.3.