Ivan Vorontsov

Hi, And what with: ``` WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by de.javakaffee.kryoserializers.UnmodifiableCollectionsSerializer to field java.util.Collections$UnmodifiableCollection.c WARNING: Please consider reporting this to the maintainers...

@magro Yep, just a warning. But can be a problem (blocker) in future java releases. As you said - this will require some effort to support jdk+ specific stuff. It...