Support for multiple workspaces

[sanel]

Hi,

Really nice package; kudos! One really nice feature would be to add support for multiple workspaces/desktops. As I can see now, only single workspace is supported and e.g. I use 2-3 of them quite often.

Suggestion. It can look like this:

PID   Workspace   Name
----  -------     ------
123   1           firefox
234   2           xterm
...

And option to move between workspaces would be nice too :)