columnIndex added to table column's cellRenderer function

[bamaboy]

Actually, this thing started, with CellMeasurer ☺️.
Table's demo works fine if we have only one dynamic column.
But if we want to have two or more dynamic columns, something like this happens.

We have to pass columnIndex to cellRenderer, and then to CellMeasurer, to make it work.
Of course we can do it manually, but it would be nice if cellRenderer function had access to columnIndex.

[bvaughn]

This seems like a reasonable change. Can confirm that Table with multi-columns using CellMeasurer works fine with this. Thanks for submitting the PR!

[bvaughn]

Released as 9.7.4

[bamaboy]

Thanks!