5.2.0

• .NET 5.0 has been removed as a target as it has reach its end of life.
  However, if you are using .NET 5.0, the .NET Standard 2.1 target should
  continue working for you.
• .NET 7.0 and .NET 8.0 have been added as a target.
• The IsAnycast property was added to MaxMind.GeoIP2.Model.Traits. This
  returns true if the IP address belongs to an anycast
  network. This is available for the
  GeoIP2 Country, City Plus, and Insights web services and the GeoIP2 Country,
  City, and Enterprise databases.

5.1.0

• Update System.Text.Json to 6.0.1 for .NET Standard 2.0 and 2.1.

5.0.0

• This library no longer targets .NET 4.6.1.
• .NET 6.0 was added as a target.
• On .NET 5.0+, HttpClient is now used for synchronous requests instead of
  WebRequest.

4.1.0

• Support for mobile country code (MCC) and mobile network codes (MNC) was
  added for the GeoIP2 ISP and Enterprise databases as well as the GeoIP2
  City and Insights web services. The MobileCountryCode and
  MobileNetworkCode properties were added to MaxMind.GeoIP2.Responses.IspResponse
  for the GeoIP2 ISP database and MaxMind.GeoIP2.Model.Traits for the
  Enterprise database and the GeoIP2 City and Insights web services. We expect
  this data to be available by late January, 2022.

4.0.1

• This release fixes an issue with 4.0.0 where the synchronous web service
  methods could cause an unexpected JSON decoding error. There are no other
  changes. The async WebServiceClient methods and the DatabaseReader were
  not affected by the issue.

4.0.0

• This library now requires .NET Framework 4.6.1 or greater or .NET Standard
  2.0 or greater.
• .NET 5.0 was added as a target framework.
• System.Text.Json is now used for deserialization of web service requests.
  Newtonsoft.Json is no longer supported for serialization or
  deserialization.
• The Names properties on NamedEntity models are now
  IReadOnlyDictionary<string, string>.
• The Subdivisions property on CityResponse and InsightsResponse is now
  an IReadOnlyList<Subdivision>.
• GeoNameId properties on NamedEntity models are now long? rather than
  int? to match the underlying database.
• The httpMessageHandler argument is now correctly initialized by the
  WebServiceClient constructor.
• The Metadata property was added to IGeoIP2DatabaseReader. Pull request
  by Mihai Valentin Caracostea. GitHub #134 & #135.

3.3.0

• The IsResidentialProxy property has been added to
  MaxMind.GeoIP2.Responses.AnonymousIPResponse and
  MaxMind.GeoIP2.Model.Traits.

3.2.0

• You may now create WebServiceClient as Typed Client with
  IHttpClientFactory in .NET Core 2.1+. Pull Request by Bojan Nikolić.
  GitHub #115 & #117.
• The WebServiceClient constructor now supports an optional
  httpMessageHandler parameter. This is used in creating the HttpClient
  for asynchronous requests.

3.1.0

• This library has been updated to support the nullable reference types
  introduced in C# 8.0.
• A Network property has been added to the various response models. This
  represents the largest network where all the fields besides the IP
  address are the same.
• The StaticIPScore property has been added to MaxMind.GeoIP2.Model.Traits.
  This output is available from GeoIP2 Precision Insights. It is an indicator
  of how static or dynamic an IP address is.
• The UserCount property has been added to MaxMind.GeoIP2.Model.Traits.
  This output is available from GeoIP2 Precision Insights. It is an
  estimate of the number of users sharing the IP/network over the past
  24 hours.
• Updated documentation of anonymizer properties - IsAnonymousVpn and
  IsHostingProvider - to be more descriptive.
• netstandard2.1 was added as a target framework.

3.0.0

• The userId constructor parameter for WebServiceClient was renamed to
  accountId and support was added for the error codes ACCOUNT_ID_REQUIRED
  and ACCOUNT_ID_UNKNOWN.
• The exception classes are no longer serializable when using the .NET
  Framework. This eliminates a difference between the .NET Framework
  assemblies and the .NET Standard ones.
• The AutonomousSystemNumber properties on MaxMind.GeoIP2.Model.Traits,
  MaxMind.GeoIP2.Responses.AsnResponse, and
  MaxMind.GeoIP2.Responses.IspResponse are now long? to match the underlying
  types in the databases.
• MaxMind.Db was upgraded to 2.4.0. This adds a new file mode enum value for
  the database reader, FileAccessMode.MemoryMappedGlobal. When used, this will
  open the file in global memory map mode. This requires the "create global
  objects" right.