[ci] Update changelog for 2.0.0-beta1 and 2.0.0-beta2
[ci] Update changelog for 2.0.0-beta1 and 2.0.0-beta2

hazendaz/waffle,dblock/waffle,dblock/waffle,hazendaz/waffle,hazendaz/waffle,Waffle/waffle,Waffle/waffle,Waffle/waffle,dblock/waffle,dblock/waffle