WISH: look into XAddConnectionWatch, does anybody need that?
DUMB: support tex fonts
+TODO: http://tmp.tomaw.net/6b9a367dbac63ced0aa7be2b19da5ae0.txt
TODO: perl-shell-window?
TODO: zweimal numlock? falsche codes rxvt urxvt for numpad?
TODO: - upgrade to libev-4.00.