Please use this jsfiddle to test your configurations.
Expect things to change as we are currently in the process of redesing API and behaviour for the component
For changelog have a look on here and also on the commit history
In this version all the component interaction is made through the Public API
That would be great!
We are currently in need for beta testers to find issues that might have slipped.
Also if you have the guts we could use a hand writing test specs.
Have a look first here as a supplement to the code
Also note that all PR's related to v4 should be made to v4beta branch and should pass the validations. Have a look at here to get started. Remember to checkout v4beta.
Please test with the latest source code on this branch not the minified versions as they are outdated. Start your issue title with a v4: so it can be easily identified by the colaborators.