todo:
optimize speciallist (start at latest acces point)
read- and write- loop/once toggle ?
syncing/linking of loopers
per-loop routing dialog
move jack-connect to gui-thread
better colors
resizing of buffers
aubio-lib for attack-detection

much later:
other views (spiral, rolling...) ?
volume curve for gtkloopview
internal clipboard, cut, copy, paste...
undo redo for buffer operations
ladcca/lash support

known bugs:
"keep absolute looplength" doesn't keep it especially when on HID
