updated changelog
updated changelog

qlands/qjson,seem-sky/qjson,flavio/qjson,qlands/qjson,cbranch/qjson-qmakefriendly,gentlefn/qjson,cbranch/qjson-qmakefriendly,flavio/qjson,gentlefn/qjson,coolshou/qjson,seem-sky/qjson,drizt/qjson,coolshou/qjson,drizt/qjson