Replace RecyclerView.Adapter to ListAdapter

[Here](https://medium.com/@trionkidnapper/recyclerview-more-animations-with-less-code-using-support-library-listadapter-62e65126acdb) is some explanation about why we must use **ListAdapter**.
This project is so good. Thanks for this project and explanations. But if you use diffutil in adapter, you can get some good skills. Recycler.Adapter and diffutil is little bit complex and have some boilerplate code. ListAdapter have some good solutions about this. Details in link. Please read that article.