@ProtoClass should have @Inherited annotation

[MixusMinimax]

When I make a subclass of a protoclass, that subclass should still be convertible to and from proto messages. For example, hibernate proxies can not be converted to protobuf messages. For that, BAData must use getters and setters, but it should do that anyway.

The reason is that getAnnnotation returns all annotations on the class, as well as annotations on superclasses if the annotation is inheritable.