release(): add release notes for 0.2.0
release(): add release notes for 0.2.0

Rahul91/junction,nava45/junction,farhaanbukhsh/junction,hTrap/junction,pythonindia/junction,Rahul91/junction,hTrap/junction,Rahul91/junction,akshayaurora/junction,pythonindia/junction,hTrap/junction,ChillarAnand/junction,shashisp/junction,NabeelValapra/junction,nava45/junction,pythonindia/junction,praba230890/junction,farhaanbukhsh/junction,nava45/junction,NabeelValapra/junction,praba230890/junction,akshayaurora/junction,NabeelValapra/junction,praba230890/junction,Rahul91/junction,hTrap/junction,ChillarAnand/junction,ChillarAnand/junction,shashisp/junction,praba230890/junction,nava45/junction,ChillarAnand/junction,pythonindia/junction,shashisp/junction,farhaanbukhsh/junction,akshayaurora/junction,NabeelValapra/junction,akshayaurora/junction,shashisp/junction,farhaanbukhsh/junction