Investigate integration with react-tween-state

[mjohnston]

Right now, there is no animation model in React Canvas. It's up to each component to implement it's own solution. Image is one example.

react-tween-state wraps this exact behavior as a mixin. This could be a nice way to standardize on how components animate state.

[chenglou]

Btw, the new react-motion should Just Work with react-canvas. Tween-state uses mixins. React-motion doesn't need to.