fix mousout selection bug
fix mousout selection bug

ChakriCherukuri/bqplot,rmenegaux/bqplot,bloomberg/bqplot,ChakriCherukuri/bqplot,bloomberg/bqplot,ssunkara1/bqplot,SylvainCorlay/bqplot,ssunkara1/bqplot,dmadeka/bqplot,rmenegaux/bqplot,SylvainCorlay/bqplot,dmadeka/bqplot,bloomberg/bqplot,ChakriCherukuri/bqplot,SylvainCorlay/bqplot