update changelog
update changelog

roselleebarle04/jubatus,gintenlabo/jubatus,jubatus/jubatus,elkingtonmcb/jubatus,gintenlabo/jubatus,jubatus/jubatus,rimms/jubatus,jubatus/jubatus,mathn/jubatus,mathn/jubatus,elkingtonmcb/jubatus,roselleebarle04/jubatus,rimms/jubatus