Setting version to 0.16.0-RC4
Setting version to 0.16.0-RC4

jzmq/scalding,cchepelov/scalding,jzmq/scalding,tresata/scalding,tresata/scalding,piyushnarang/scalding,cchepelov/scalding,cchepelov/scalding,tdyas/scalding,jzmq/scalding,piyushnarang/scalding,tresata/scalding,piyushnarang/scalding,twitter/scalding,twitter/scalding,tdyas/scalding,twitter/scalding,tdyas/scalding