Table with table Footer ?

Hello,

It would be interesting to implement a method set_footer() in CI3 and for after.
When you use some api (javascript or other), sometimes you need to set footer too.
I find this on github (https://github.com/rhspeer/TableWithTableFooter) and change some function declaration in order to this library works with CI3.
Perhaps integrate this in the original Table.php

Thanks.