Collator now only applies value_transform if vdims are defined
Collator now only applies value_transform if vdims are defined

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