Migrate to AndroidX

[malinajirka]

Google has replaced the Android support library with Android Jetpack (AndroidX). “Unfortunately”, they also changed packages and names of Maven artifacts. All new development will occur in the AndroidX library, so if we want to use the new features (and probably even bug fixes) we need to migrate to AndroidX.

Official migration guide – https://developer.android.com/jetpack/androidx/migrate

Some tips on migration
https://blog.danlew.net/2018/11/14/the-reality-of-migrating-to-androidx/
https://medium.com/androiddevelopers/cross-stitching-plaid-and-androidx-7603a192348e

[stale]

This issue has been marked as stale because:

• It has been inactive for the past year.
• It isn't in a project or a milestone.
• It hasn’t been labeled [Pri] Blocker, [Pri] High, or good first issue.

Please comment with an update if you believe this issue is still valid or if it can be closed. This issue will also be reviewed for validity and priority (cc @designsimply).

[malinajirka]

This ticket has already been completed.