Making slow but steady progress on Tweak. Rebuilt much of it onto a much more extensible model. New features:
Direct Manipulation: drag layers themselves to position, you no longer have to use the property sliders.
Interactions/Events: trigger things based on interactions on a specific layer (i.e. Tap, Swipe, Long Press)
Transitions: Update any properties of a layer, interactions can trigger multiple transitions.
Still lots more to do, but a few big learnings already.
Check out some demo videos here. Much more to come on this, follow along at http://tweakapp.co