Compatibility fix for Histogram plots
Compatibility fix for Histogram plots

ioam/holoviews,basnijholt/holoviews,basnijholt/holoviews,basnijholt/holoviews,mjabri/holoviews,mjabri/holoviews,vascotenner/holoviews,ioam/holoviews,vascotenner/holoviews,ioam/holoviews,vascotenner/holoviews,mjabri/holoviews