Support for "Summary" row

[akshayranganath]

In many cases, the last row of a table is some kind of summary. Just like the header row, could you implement a mechanism to make the summary option bold? This could be an optional setting and can be used when we need to highlight the last row.

[DarkTMP]

In many cases, the last row of a table is some kind of summary. Just like the header row, could you implement a mechanism to make the summary option bold? This could be an optional setting and can be used when we need to highlight the last row.

You can take file with changes from kazko pull request. He made this stuff.