https://proandroiddev.com/no-more-livedata-in-your-repository-there-are-better-options-25a7557b0730
https://developer.android.com/jetpack/docs/guide
https://github.com/android/architecture-components-samples
https://github.com/android/architecture-samples
https://codelabs.developers.google.com/codelabs/android-navigation/#0
https://codelabs.developers.google.com/codelabs/android-dagger/index.html#0
https://codelabs.developers.google.com/codelabs/android-paging/#1
https://github.com/googlecodelabs/android-testing
