removing unneeded types from union Arg

start implementing xembed.

changing tabbed to embedding like xterm it does.

closing windows works better. still not good enough...

typo

removing autostart. using stdin instead.

added classhints, tab-clicking works again.

adding classhints.

implemented closing tabs (still buggy)

nicer tabbar.

added tab selecting with mouse

tabbed works.

reparenting works.

adding reparent()

fixing run()

implementing spawntab(), rewriting run()

added const flag.

forgot to add killclient here.

adding killclient, removing wmhints

removing surf-stuff, distributing tabbed on its own.