chore(package): update babel-core to version 6.18.0
chore(package): update babel-core to version 6.18.0

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benkroeger/keystone,trentmillar/keystone,w01fgang/keystone,danielmahon/keystone,snowkeeper/keystone,ratecity/keystone,andrewlinfoot/keystone,alobodig/keystone,frontyard/keystone,cermati/keystone,matthewstyers/keystone,frontyard/keystone,matthewstyers/keystone,vokal/keystone,rafmsou/keystone,Pop-Code/keystone,vokal/keystone,trentmillar/keystone,ONode/keystone,andrewlinfoot/keystone,w01fgang/keystone,Pop-Code/keystone,cermati/keystone,danielmahon/keystone,matthewstyers/keystone,dryna/keystone-twoje-urodziny,naustudio/keystone,dryna/keystone-twoje-urodziny,ratecity/keystone,rafmsou/keystone,concoursbyappointment/keystoneRedux,andrewlinfoot/keystone,frontyard/keystone,benkroeger/keystone,sendyhalim/keystone,ONode/keystone,alobodig/keystone,trentmillar/keystone,benkroeger/keystone,linhanyang/keystone,brianjd/keystone,brianjd/keystone,naustudio/keystone,danielmahon/keystone,snowkeeper/keystone,sendyhalim/keystone,concoursbyappointment/keystoneRedux,naustudio/keystone,vokal/keystone