Axis tick_values fix
Axis tick_values fix

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