update multi_json to 1.2.0
update multi_json to 1.2.0

mateusrevoredo/koala,lisa-lina/koala,arsduo/koala,adparlor/koala,chrisortman/koala,samnang/koala,morgoth/koala,supriyantomaftuh/koala,lucaskds/koala,Loke155/koala,christer155/koala,sideci-sample/sideci-sample-koala,hendricius/koala,sancopanco/koala