1381 [in_app_purchase] Iap refactor (cla: yes)

1384 Send success result for AlarmService.initialized method call (cla: yes)

1385 [firebase_crashlytics]Remove white spaces to make git happy (cla: yes)

1386 [google_maps_flutter] Add failing test verifying that only changed markers are updated (cla: yes)

1387 [cloud_firestore] Add metadata field to DocumentSnapshot (cla: yes, feature, flutterfire)

1388 [firebase_crashlytics] Add firebase_crashlytics for Readme. (cla: yes, documentation, flutterfire)

1393 [camera] Fixes (#29925) (bugfix, cla: yes)

1394 Add Crashlytics plugin to FlutterFire docs (cla: no, flutterfire, submit queue)