wasabeef/recyclerview-animators ? reverse-engineered prompt

Build me an Android library for RecyclerView animations, with a simple demo app that shows how it works.

I want the library to make list items animate when they are added, removed, changed, or first shown, so an app can easily plug in different animation styles like sliding, fading, scaling, flipping, and overshoot movement. Please include a few ready to use options and make it easy to customize things like animation speed, interpolator, and whether the animation happens only the first time an item appears.

Also include a way for a custom view holder to override the default add and remove animation for specific rows.

Make the sample app clear and easy to run, with a few example lists that show the different animations in action. Keep the setup simple for Kotlin users, and add enough documentation so someone can copy the usage into their own app. If you need to check current Android docs or best practices, look them up online.