verbose_iterator: Support printing total duration
verbose_iterator: Support printing total duration

ThiefMaster/indico,DirkHoffmann/indico,indico/indico,pferreir/indico,pferreir/indico,DirkHoffmann/indico,indico/indico,DirkHoffmann/indico,indico/indico,ThiefMaster/indico,pferreir/indico,pferreir/indico,indico/indico,ThiefMaster/indico,ThiefMaster/indico,DirkHoffmann/indico