title: QTableView Selecion Change
body: <p>Been googling around for some time on this one but I can't seem to find anything.  Need the signal for QTableView on a selection change.  Tried <code>tbl_view.itemSelectionChanged.connect(self.select_row)</code> but the compiler complains this doesn't exist.  I also need to retrieve the data from the row that is selected.  Can someone please point me in the right direction?</p>