fixed bug in groupBySequences. don't use iteritems for dictQueue !
fixed bug in groupBySequences. don't use iteritems for dictQueue !

GenDataPro/pygr,ctb/pygr,ctb/pygr,RitwikGupta/pygr,cjlee112/pygr,cjlee112/pygr,theoryno3/pygr,cjlee112/pygr,GenDataPro/pygr,theoryno3/pygr,cjlee112/pygr,RitwikGupta/pygr,theoryno3/pygr,ctb/pygr,GenDataPro/pygr,ctb/pygr,ctb/pygr,RitwikGupta/pygr