The current example app is a really simple approach on what can be done with ViewAnimator. Even though the library is not complex to integrate and use on your own projects it would be nice to show how to use different animations in different scenarios.

I'd be replicating the app should on the animations Complex header.

<image src="https://cdn.dribbble.com/users/702789/screenshots/381608

In order to have a well documented API we need to describe what each class, struct, enum and method responsibilities are and how to use it.

A nice effect to add could be particles splitting into smaller particles when bouncing (not by default, it should be an option).

Aside from enabling or disabling the effect, also the split size and number should be configurable something like:

split: {
    enable: true, // or false
    size: 50,
    count: 10
}

Currently, the framework is lagging unit testing. Add some unit test.