NdMappings now allow dropping values after slicing
NdMappings now allow dropping values after slicing

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