[Feat] Multiple Header Rows & Caption, Sort by multiple columns, alternate filter/sort image colors

[DanPFW]

I've just begun to review this component, but so far it shows a lot of potential. Before I start tweaking it to fit my needs. Are there any plans to add the ability to include a Caption row and additional header rows to the layout? Sometimes there's a need to categorized columns under a larger header, and divided by thicker column border lines.

I also have not seen a way to sort by multiple data columns when a column is selected to sort. I'd like to sort by $ Desc, State Asc, Store Asc, for example.

I also prefer to have dark colored headers, and odd/even row colors, in a tabular layout, including multiple rollups with differing background colors by level. In order to support header row(s) with dark colors, a developer would need to change the colors of the Sorting Arrow, and the Filter symbol, by adding alternate images, or applying a color style to the images?