ENH: python 3 compatibility
ENH: python 3 compatibility

aaronkaplan/intelmq,sch3m4/intelmq,pkug/intelmq,pkug/intelmq,sch3m4/intelmq,certtools/intelmq,robcza/intelmq,robcza/intelmq,certtools/intelmq,aaronkaplan/intelmq,sch3m4/intelmq,sch3m4/intelmq,robcza/intelmq,certtools/intelmq,pkug/intelmq,aaronkaplan/intelmq,robcza/intelmq,pkug/intelmq