GROOVY-6338: @Log4j2 Annotation
Test can now be compiled with Java 1.5
GROOVY-6259: Allow to define the logger category name for the @Log
annotations
Merge branch 'GROOVY-6338' of https://github.com/PascalSchumacher/groovy-core into PascalSchumacher-GROOVY-6338
set since version to 2.2.0