- **Visibility** - Visibility can now handle "sticky" `fixed` content, adding a placeholder duplicate element which will automatically appear when an element swaps to fixed position
**Major Changes (Please Read)**
- **Site** - Added new colors `brown`, `violet`, and `grey`. These are available in all elements with color variations. **Thanks @lemartialou**
- **Site** - Added new colors `olive`, `violet`, `brown` and `grey`. These are available in all elements with color variations. **Thanks @lemartialou**
- **API** - API can now be used with mocked responses, and custom AJAX requests. `mockResponse` can be used to resolve request with a specified returned JSON object, or a function that receives the same request settings as the server. `mockResponseAsync` allows you to specify an asynchronous callback that can resolve a request using a custom XHR backend.
- **API** - API callbacks now have an `onResponse` callback that can modified a server response before it is parsed by other callbacks for success or failure conditions. **Thanks @mnquintana**
- **API** - API now provides a client-side cache setting to avoid server roundtrips for identical urls `cache: 'local'`. This is useful for caching results that will return the same results across a page view: things like autocomplete.