Allow vertical scrolling in PileupTrack
Allow vertical scrolling in PileupTrack

snaheth/pileup.js,hammerlab/pileup.js,piotr-gawron/pileup.js,piotr-gawron/pileup.js,hammerlab/pileup.js,hammerlab/pileup.js,hammerlab/pileup.js,snaheth/pileup.js,piotr-gawron/pileup.js,snaheth/pileup.js,snaheth/pileup.js,piotr-gawron/pileup.js