[release] 2.0.0-alpha.6
[release] 2.0.0-alpha.6

Jinjiang/vue,Kingwl/vue,gebilaoxiong/vue,lizhiyao/vue,greennyreborn/vue,Hanks10100/vue,Kingwl/vue,xueyaodeai/vue,hanhongyuan/vue,sreesirisha/GITMidtermexam,vuejs/vue,vuejs/vue,Hanks10100/vue,greennyreborn/vue,xueyaodeai/vue,Hanks10100/vue,sreesirisha/GITMidtermexam,lizhiyao/vue,leemotive/vue,leemotive/vue,Jinjiang/vue,pramudaprakash/GITHUB,hanhongyuan/vue,wushuyi/vue,gebilaoxiong/vue,Jinjiang/vue,posva/vue,lizhiyao/vue,leemotive/vue,cnchanning/vue,KingMario/vue,xueyaodeai/vue,Kingwl/vue,KingMario/vue,Ddder-FE/vue,pramudaprakash/GITHUB,gebilaoxiong/vue,pramudaprakash/GITHUB,pramudaprakash/GITHUB,hanhongyuan/vue,optimizely/vue,KingMario/vue,posva/vue,leemotive/vue,Hanks10100/vue,greennyreborn/vue,lizhiyao/vue,posva/vue,sreesirisha/GITMidtermexam,wushuyi/vue,hanhongyuan/vue,Ddder-FE/vue,sreesirisha/GITMidtermexam,posva/vue,vuejs/vue,Ddder-FE/vue,xueyaodeai/vue,Ddder-FE/vue,cnchanning/vue,cnchanning/vue,KingMario/vue,greennyreborn/vue,Jinjiang/vue,Kingwl/vue,vuejs/vue