Updated the holoviews submodule reference
Updated the holoviews submodule reference

ioam/topographica,mjabri/topographica,mjabri/topographica,ioam/topographica,ioam/topographica,ioam/topographica,ioam/topographica,mjabri/topographica,mjabri/topographica,mjabri/topographica