title: WordPress rowactions for WP_List_Table ColSpan
body: <p>I'm currently using the WP_List_Table for displaying my data for my plugin and have rowactions tied to the first column (as show in multiple tutorials).  I have approximately 9 columns in my table and would like for the actions row to span across all of the columns (or at least more than one) in the table so that when the browser is resized, the actions aren't wrapped in a single cell.  Does anyone know how to accomplish this?</p>