Updating CHANGELOG for 1.2.1
Updating CHANGELOG for 1.2.1

drapergem/draper,estum/draper,SpencerCDixon/draper,chuck-john/draper,jianyuan/draper,totzyuta/draper,liwangbest/draper,yui-knk/draper,yui-knk/draper,liwangbest/draper,chuck-john/draper,mallikarjunayaddala/draper,baberthal/draper,totzyuta/draper,estum/draper,donaldpiret/draper,mallikarjunayaddala/draper,drapergem/draper,outstand/draper,drapergem/draper,turingschool/draper,Bastes/draper,SpencerCDixon/draper,turingschool/draper,Bastes/draper,sideci-sample/sideci-sample-draper,jianyuan/draper,outstand/draper,baberthal/draper,krainboltgreene/draper