some initial whitespacing of the read_aligned_intervals and add_aligned_intervals functions
some initial whitespacing of the read_aligned_intervals and add_aligned_intervals functions

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