sole/tween.js — pull request #52 by avinoamr (2012-07-02 00:21:34+00:00)
Title: Adds support for tweening in nested objects

I've added support for tweening recursively within nested objects:

```javascript
new TWEEN.Tween({ position: { x: 0, y: 0 }, size: { x: 100, y: 100 } })
.to({ position: { x: 50, y: 50 }, size: { x: 50, y: 50 } });
```

As a side-effect, I've separated the actual value interpolation logic into the `.interp()` method. Which I think is good practice anyway.

Please consider adding it to the source code.

If I've ignored some convention or philosophy, please let me know.

Thanks! :)