extend smart_open to pass **kw to S3 write bucket
extend smart_open to pass **kw to S3 write bucket

RaRe-Technologies/smart_open,val314159/smart_open,mpenkov/smart_open,nvie/smart_open,asieira/smart_open,RaRe-Technologies/smart_open,piskvorky/smart_open,mpenkov/smart_open,gojomo/smart_open