forced gridding of layout - even rows and columns
forced gridding of layout - even rows and columns

drufat/vispy,michaelaye/vispy,michaelaye/vispy,drufat/vispy,ghisvail/vispy,ghisvail/vispy,Eric89GXL/vispy,drufat/vispy,Eric89GXL/vispy,michaelaye/vispy,Eric89GXL/vispy,ghisvail/vispy