code: def logger_focus(self,i,focus_shift=16):
          
          if self.logger.GetItemCount()-1 > i+focus_shift:
              i += focus_shift
          else:
              i = self.logger.GetItemCount()-1
          self.logger.Focus(i)
docs: focuses the logger on an index 12 entries below i
          @param: i -> index to focus on