[Dillo-dev] Mouse buttons in keysrc

Dear Dillo developers, I noticed that the key configuration via keysrc does not recognize mouse keys. So I am wondering whether anybody already thought about adding mouse keys? I think for many users something like <shift>mouse1 = new-tab mouse9 = forward mouse8 = back in keysrc would be very convenient. (This would probably make the options middle_click_opens_new_tab and middle_click_drags_page in dillorc obsolete.) Kind regards, Alexander