• The GeoIP2\Database\Reader lookup methods (e.g., city(), isp()) now
  throw an BadMethodCallException if they are used with a database that
  does not match the method. In particular, doing a city() lookup on a
  GeoIP2 Country database will result in an exception, and vice versa.
• A metadata() method has been added to the GeoIP2\Database\Reader class.
  This returns a MaxMind\Db\Reader\Metadata class with information about the
  database.
• The name attribute was missing from the RepresentedCountry class.