Bump patch version
Fix uncommunitive method name
Extract AttrSetter, some refactoring
Use attr_setter in CallRegistry
User attr_setter in Object wrapper
Refactor AttrSetter
Hide duplication
Write test for compatibility with forwardable
Fix spec
Implement DelegatorRegistry; mem excls->delegators
Include class method that excludes delegators
Use higher-level polymorphism with delegated object
RenameModule/Methods AttrSetter->InitAttrs
Include test case for including delegators
Refactor InitAttrs
Remove support for jruby
Update hash_out version
Publicize register attribute
Update changelog
Update readme