DFColumns interface now determines dimensions via defaults
DFColumns interface now determines dimensions via defaults

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