Fix for ItemTable getitem and dimension_values methods
Fix for ItemTable getitem and dimension_values methods

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