chore(package): update babel-preset-es2015 to version 6.13.2
chore(package): update babel-preset-es2015 to version 6.13.2

https://greenkeeper.io/
matthewstyers/keystone,Adam14Four/keystone,Yaska/keystone,trentmillar/keystone,matthewstyers/keystone,sendyhalim/keystone,naustudio/keystone,trentmillar/keystone,w01fgang/keystone,ONode/keystone,pr1ntr/keystone,ratecity/keystone,naustudio/keystone,cermati/keystone,andrewlinfoot/keystone,frontyard/keystone,cermati/keystone,pr1ntr/keystone,frontyard/keystone,Adam14Four/keystone,danielmahon/keystone,matthewstyers/keystone,Yaska/keystone,sendyhalim/keystone,alobodig/keystone,Pop-Code/keystone,Yaska/keystone,andrewlinfoot/keystone,trentmillar/keystone,alobodig/keystone,dryna/keystone-twoje-urodziny,brianjd/keystone,vokal/keystone,brianjd/keystone,ratecity/keystone,jstockwin/keystone,snowkeeper/keystone,benkroeger/keystone,vokal/keystone,dvdcastro/keystone,danielmahon/keystone,dryna/keystone-twoje-urodziny,jstockwin/keystone,concoursbyappointment/keystoneRedux,rafmsou/keystone,dvdcastro/keystone,Pop-Code/keystone,naustudio/keystone,ONode/keystone,andrewlinfoot/keystone,rafmsou/keystone,danielmahon/keystone,linhanyang/keystone,benkroeger/keystone,w01fgang/keystone,vokal/keystone,snowkeeper/keystone,concoursbyappointment/keystoneRedux,benkroeger/keystone,frontyard/keystone