Update changelog for 0.2
Update changelog for 0.2

kaoree/flow,sdelaysam/flow,pyricau/flow,venkatesh3007/flow,square/flow,lynnmatrix/flow,superboonie/flow,leasual/flow,kidaa/flow,mlevytskiy/flow,Zhuinden/flowless,square/flow,xfumihiro/flow,sdelaysam/flow