prepare for next development iteration
ARQ-449 Graphene can not switch between contexts
ARQGRA-446: ClassImposterizer: add groovy objects to the list of ignored methods
ARQGRA-446: clarify ignored methods in ClassImposterizer
Merge branch 'master' into 2.1.x
Merge branch 'release/2.1.0.Alpha1' into 2.1.x