Minor fixes to Columns constructor when passing Elements
Minor fixes to Columns constructor when passing Elements

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