add 6.1.0 changelog
add 6.1.0 changelog

iamchenxin/babel,jchip/babel,vadzim/babel,kpdecker/babel,lxe/babel,Skillupco/babel,shuhei/babel,Skillupco/babel,maurobringolf/babel,CrocoDillon/babel,kassens/babel,ameyms/babel,iamchenxin/babel,kpdecker/babel,hulkish/babel,kaicataldo/babel,hzoo/babel,jridgewell/babel,existentialism/babel,STRML/babel,jridgewell/babel,guybedford/babel,iamstarkov/babel,fabiomcosta/babel,Skillupco/babel,KunGha/babel,kaicataldo/babel,zenparsing/babel,bcoe/babel,jeffmo/babel,babel/babel,mrtrizer/babel,jridgewell/babel,krasimir/babel,hulkish/babel,krasimir/babel,kellyselden/babel,drieks/babel,zjmiller/babel,hzoo/babel,rmacklin/babel,existentialism/babel,guybedford/babel,hulkish/babel,ccschneidr/babel,PolymerLabs/babel,rmacklin/babel,kellyselden/babel,tikotzky/babel,garyjN7/babel,vhf/babel,chicoxyzzy/babel,dekelcohen/babel,dekelcohen/babel,PolymerLabs/babel,benjamn/babel,AgentME/babel,antn/babel,AgentME/babel,kaicataldo/babel,bcoe/babel,kedromelon/babel,guybedford/babel,Skillupco/babel,claudiopro/babel,jhen0409/babel,claudiopro/babel,tikotzky/babel,babel/babel,kassens/babel,jeffmo/babel,kedromelon/babel,shuhei/babel,vadzim/babel,drieks/babel,jhen0409/babel,chicoxyzzy/babel,zenparsing/babel,fabiomcosta/babel,zertosh/babel,hulkish/babel,samwgoldman/babel,chicoxyzzy/babel,CrocoDillon/babel,DmitrySoshnikov/babel,jridgewell/babel,shuhei/babel,dustyjewett/babel-plugin-transform-es2015-modules-commonjs-ember,kellyselden/babel,iamchenxin/babel,zertosh/babel,zjmiller/babel,kedromelon/babel,KunGha/babel,lxe/babel,jchip/babel,antn/babel,maurobringolf/babel,samwgoldman/babel,iamstarkov/babel,DmitrySoshnikov/babel,kaicataldo/babel,babel/babel,ameyms/babel,mrtrizer/babel,samwgoldman/babel,garyjN7/babel,hzoo/babel,Industrial/babel,benjamn/babel,chicoxyzzy/babel,maurobringolf/babel,STRML/babel,vhf/babel,babel/babel,Industrial/babel,jeffmo/babel,kellyselden/babel,existentialism/babel,drieks/babel,hzoo/babel,ccschneidr/babel,claudiopro/babel,PolymerLabs/babel