Updated to androidx.

gradle.properties

@@ -16,4 +16,6 @@ org.gradle.jvmargs=-Xmx1536m
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
 # org.gradle.parallel=true
 org.gradle.caching=true
-android.enableD8=true
+android.enableD8=true
+android.useAndroidX=true
+android.enableJetifier=true