• Revamp of protobuf message interface to improve usability. See: migration docs
• Remove ResourceName utility
• Add ability to specify API version at client level, which overrides setting at service or type level.
• GoogleAdsClient.get_type is now an instance, not class, level method
• Add copy_from helper method to GoogleAdsClient.
• Add enums attribute to GoogleAdsClient for easier Enum accessing.
• Various updates to all examples