added support for recording source interval as well as target interval in IDInterval data type
added support for recording source interval as well as target interval
in IDInterval data type

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