[Dillo-dev] shortcuts to open links in new tab and new window

Currently it seems like you can only have it one way, via the "middle_click_opens_new_tab" dillorc option. (And to do it the other way, you have to right click and navigate the menus. A lengthy process :). I think it would be quite useful if both were available via a shortcut... perhaps have this option toggle the meaning of ShiftMiddleClick and MiddleClick... whereby one will open the link in a new window, and the other in a new tab?