chore(package): update es6-promise to version 4.0.2
chore(package): update es6-promise to version 4.0.2

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