I don't think RecyclerView still need its own repository

I'm not 100% sure, but while reading the `RecyclerView` guide I noticed the [**Installation** section](https://guides.codepath.com/android/using-the-recyclerview#installation) which says I need to use a specific `com.android.support:recyclerview-v7` support library. I'm not using it in my code, and my app runs fine. Isn't `RecyclerView` included by default in the `com.android.support:appcompat-v7` support library?

There's no mention of the specific one in the [official guide](https://developer.android.com/guide/topics/ui/layout/recyclerview.html), it only says:

> Android Support Library provides the RecyclerView suite of objects