Most of the things required for user study #2 implemented:

- added global tempo control.

- Ability to finish constellation by pressing corresponding button

- double tap to remove constellation

-nodes are able to be moved by dragging them around.
massive overhaul of delegation system.  No longer overuse of selectors. New custom built UI elements (radio buttons + sliders).
Added ADSR to the audio.
Rebuilt pure data patch from the ground up.
Rebuilt timer to make it more accurate (at the cost of battery life).
misc fixes
fixed the issue with travelling between nodes.
Removed a whole bunch of excess code from the pure data patch.
improved animations and general visual improvements
swapped out libpd for core audio audio unit integration for best performance
final push before clean up.
Replaced envelope with ASR.
massive improvements on UI and everything.
Added tutorial.
overhaul of buttons to make more sense.
preparation for release 1.0