Tab navigation with "most recently used" behaviour.

        It's fired when pressing 'go to previous file' or 'go to next file'
        shortcuts.

        forward:
            True: move to next file
            False: move to previous file

def tab_navigation_mru(self, forward=True):
        """
        Tab navigation with "most recently used" behaviour.

        It's fired when pressing 'go to previous file' or 'go to next file'
        shortcuts.

        forward:
            True: move to next file
            False: move to previous file
        """
        self.tabs_switcher = TabSwitcherWidget(self, self.stack_history,
                                               self.tabs)
        self.tabs_switcher.show()
        self.tabs_switcher.select_row(1 if forward else -1)
        self.tabs_switcher.setFocus()