6.0.0

• BREAKING: All response classes in MaxMind.MinFraud.Response have been
  converted from classes to records.
• BREAKING: All request classes in MaxMind.MinFraud.Request have been
  converted from classes to records.
• BREAKING: All request class constructors have been marked [Obsolete].
  Use object initializer syntax instead.
• BREAKING: The SetLocales method has been removed from
  MaxMind.MinFraud.Response.IPAddress.
• BREAKING: The Tag property on
  MaxMind.MinFraud.Request.TransactionReport is now required. Previously,
  omitting it in object-initializer syntax would silently default to NotFraud.
• BREAKING: The minimum MaxMind.GeoIP2 dependency has been bumped to 6.0.0
  (a transitive breaking change).
• Added TrackingToken property to MaxMind.MinFraud.Request.Device. This is
  the token generated by the
  Device Tracking Add-on for
  explicit device linking.
• Added Banquest, SummitPayments, Yaadpay, and FatZebra to the
  PaymentProcessor enum.
• Added Clear to the TransactionReportTag enum for use with the Report
  Transaction API.
• ReportAsync on MaxMind.MinFraud.WebServiceClient now validates that the
  TransactionReport includes at least one of IPAddress, MinFraudId,
  MaxMindId, or TransactionId, throwing ArgumentException if none are set.
  Previously this check only ran in the (now obsolete) constructor.
• A Guid.Empty value assigned to the MinFraudId property on
  MaxMind.MinFraud.Request.TransactionReport is now normalized to null,
  matching the behavior of the obsolete constructor.
• Fixed a missing ConfigureAwait(false) in ReportAsync that could cause
  deadlocks in synchronous-over-asynchronous contexts.
• Custom ToString() overrides have been removed from all response and request
  classes. Records generate ToString() automatically.