* CHANGE: Use Android's Storage Access Framework instead of custom file picker for Android Oreo and newer * FIX: Update Google IAB library to prevent app from being removed from Google Play * ADD: Notify system about inserted/removed messages to get quicker conversation updates * ADD: Instructions & FAQ buttons * ADD: Import messages in batches to improve performance * CHANGE: Codebase converted to Kotlin * FIX: reverting to default SMS app on Android Q and higher