* Write some proper docs 
	usage, bugs etc.

* DONE! Stop segfaults when resizing
	This seems to be caused by trying to write into windows that no longer fit the screen.

* Implement X spectrum analyser window
	- DONE! Starting up when -f option is used
	- DONE! Key to toggle
	- Stop grabbing focus

* Fix drawing
	Boxes don't seem to line up

* Updating
	New FFT libs need looking at
