chore(package): update ava to version 0.21.0 (#658)
chore(package): update ava to version 0.21.0 (#658)


wechaty/wechaty,mukaiu/wechaty,zixia/wechaty,Chatie/wechaty,wechaty/wechaty,Chatie/wechaty,mukaiu/wechaty,Chatie/wechaty,binsee/wechaty,binsee/wechaty,lijiarui/wechaty,wechaty/wechaty,mukaiu/wechaty,lijiarui/wechaty,binsee/wechaty,zixia/wechaty