v3.16.1

Fixed

• The static type passed at compile time to realm.create() was checked for a
  primary key rather than the actual type passed at runtime, resulting in
  exceptions like "''RealmSwiftObject' does not have a primary key and can not
  be updated'" being thrown even if the object type being created has a primary
  key. (since 3.16.0, #6159).

Compatibility

• File format: Generates Realms with format v9 (Reads and upgrades all previous formats)
• Realm Object Server: 3.21.0 or later.
• Carthage release for Swift is built with Xcode 10.2.1.