support urgency wm hints

Signed-off-by: Christoph Lohmann <20h@r-36.net>

Allow selecting the colors on command line.

Signed-off-by: Christoph Lohmann <20h@r-36.net>

select or open new tab with Ctrl-T

The default config will display all open tabs in dmenu. You can either select
one of them, or if you enter a string, that does not start with „0x“, tabbed
will open a new tab and run the command specified at tabbed-startup but append
the entered string to the command first.

With
tabbed -r 2 surf -e ''
you can hit Ctrl-T and either select an already opened tab or enter an URL,
which will be opened in a new tab with surf.

Signed-off-by: Christoph Lohmann <20h@r-36.net>

Adding an option to do relative new position. And fixing tab position.

Thanks Kyle Kramer for the suggestion!

Adding fullscreen mode to tabbed.

New windows should be in the foreground.

Changing the single-linked list for clients to a malloc()ed array. This makes
algorithms more efficient, that depend on the number of clients or shuffeling
around. The patch also adds new shortcuts to move tabs in their position. The
default color scheme is changed to the one of the maintainer.

new default colour scheme

added generic client support (thanks Stephen)

improved focus handling

tabbed remembers last viewed tab; open new tabs focused/unfocused can be configured now.

using dwms/dmenus colors.

fixing bindings to move()

code cleaning, windows are properly closed on exit; if last client quits, exit

storing windowId in char[] variable.

fixing config.def.h

removing autostart. using stdin instead.

added classhints, tab-clicking works again.

tabbed works.

implementing spawntab(), rewriting run()