1.16.0

Added

• Firebase as a default cloud messaging service. Read more about migration from GCM to Firebase on Google's official docs.
• Google Services Gradle Plugin support. We're now reading project number from your google-services.json file if it's present. In case you don’t use it, you can still put google_app_id string to your resources as stated here - bullet 5.

Changed

• Android compile/target version to API level 28.

Deprecated

• GCM as a default - now using Firebase. If for some reason you still need to use GCM, it will be used if it's present on classpath (in app’s build.gradle) as a compatibility feature. Otherwise, if you don't need GCM, please remove it as a dependency since this version is using FCM as a default.