3.6
* Working grab boxes
* Border based resizals
* Grow(and shrink?) ctl commands
* Switch to mk for building

4.0
* Get rid of col modes
* (Multi line) Tag bars
* Replace bar with master tag bar
* New event system
* Resizable managed area
* Sticky clients
* New dmenu(with real cursor and using Bio)
* Depend on plan9-corelibs