Upgraded to d3 v5: Bars' animation
Upgraded to d3 v5: Bars' animation

ChakriCherukuri/bqplot,bloomberg/bqplot,bloomberg/bqplot,bloomberg/bqplot,SylvainCorlay/bqplot,ChakriCherukuri/bqplot,dmadeka/bqplot,SylvainCorlay/bqplot,ChakriCherukuri/bqplot,dmadeka/bqplot,SylvainCorlay/bqplot