Added two attached depency properties: CellTemplate and CellEditingTemlate. These can be used to specify a custom template for the cells of the colums of the 2D grid. It causes the grid to use TemplateColumns instead of TextColumns while autogenerating columns.
Added two attached depency properties: CellTemplate and CellEditingTemlate. These can be used to specify a custom template for the cells of the colums of the 2D grid. It causes the grid to use TemplateColumns instead of TextColumns while autogenerating columns.

mennowo/Gu.Wpf.DataGrid2D,JohanLarsson/Gu.Wpf.DataGrid2D