Fixed ArrayColumns.validate method
Fixed ArrayColumns.validate method

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