Firebase 3.7.0是否支持iOS 7和8

Question

我在我的应用中使用Firebase。我已经通过Cocoapods安装了。为了支持iOS 10中的推送通知，我使用最新版本的Firebase 3.7.0更新了可可豆荚。 请告诉我它是否支持iOS 7和iOS 8。

像这样注册推送通知

if #available(iOS 10.0, *) {
  let authOptions : UNAuthorizationOptions = [.Alert, .Badge, .Sound]
  UNUserNotificationCenter.currentNotificationCenter().requestAuthorizationWithOptions(
    authOptions,
    completionHandler: {_,_ in })

  // For iOS 10 display notification (sent via APNS)
  UNUserNotificationCenter.currentNotificationCenter().delegate = self
  // For iOS 10 data message (sent via FCM)
  FIRMessaging.messaging().remoteMessageDelegate = self

} else {
  let settings: UIUserNotificationSettings =
  UIUserNotificationSettings(forTypes: [.Alert, .Badge, .Sound], categories: nil)
  application.registerUserNotificationSettings(settings)
  application.registerForRemoteNotifications()
}

由于