2.0.0-beta.2

2.0.0-beta.2

• BREAKING CHANGE: Replaced IsZero() methods with HasData() methods on all
  result structs (including Names). The new methods provide clearer semantics:
  HasData() returns true when GeoIP data is found and false when no data is
  available. Unlike IsZero(), HasData() excludes Network and IPAddress fields
  from validation, allowing users to access network topology information even when
  no GeoIP data is found. The Network and IPAddress fields are now always
  populated for all lookups, regardless of whether GeoIP data is available.
• BREAKING CHANGE: Replaced all anonymous nested structs with named types to
  improve struct initialization ergonomics. All result structs (Enterprise, City,
  Country) now use named types like EnterpriseCityRecord, CityTraits,
  CountryRecord, etc. This makes it much easier to initialize structs in user
  code while maintaining the same JSON serialization behavior.
• BREAKING CHANGE: Changed Location.Latitude and Location.Longitude from
  float64 to *float64 to properly distinguish between missing coordinates and
  the valid location (0, 0). Missing coordinates are now represented as nil
  and are omitted from JSON output, while valid zero coordinates are preserved.
  This fixes the ambiguity where (0, 0) was incorrectly treated as "no data".
  Added Location.HasCoordinates() method for safe coordinate access. Reported
  by Nick Bruun. GitHub #5.

2.0.0-beta.1

2.0.0-beta.1

• BREAKING CHANGE: Updated to use maxminddb-golang/v2 which provides
  significant performance improvements and a more modern API.
• BREAKING CHANGE: All lookup methods now accept netip.Addr instead of
  net.IP. This provides better performance and aligns with modern Go
  networking practices.
• BREAKING CHANGE: Renamed IsoCode fields to ISOCode in all structs
  to follow proper capitalization for the ISO acronym. Closes GitHub issue #4.
• BREAKING CHANGE: Replaced map[string]string Names fields with structured
  Names type for significant performance improvements. This eliminates map
  allocation overhead, reducing memory usage by 34% and allocations by 56%.
• BREAKING CHANGE: Added JSON tags to all struct fields. JSON tags match
  the corresponding maxminddb tags where they exist. Custom fields (IPAddress
  and Network) use snake_case (ip_address and network).
• BREAKING CHANGE: Removed IsAnonymousProxy and IsSatelliteProvider fields
  from all Traits structs. These fields have been removed from MaxMind databases.
  Use the dedicated Anonymous IP database for anonymity detection instead.
• BREAKING CHANGE: Go 1.24 or greater is now required. This enables the use
  of omitzero in JSON tags to match MaxMind database behavior where empty
  values are not included.
• Added IsZero() method to all result structs (City, Country, Enterprise, ASN,
  etc.) to easily check whether any data was found for the queried IP address.
  Requested by Salim Alami. GitHub #32.
• Added Network and IPAddress fields to all result structs. The Network field
  exposes the network prefix from the MaxMind database lookup, and the IPAddress field
  contains the IP address used during the lookup. These fields are only populated when
  data is found for the IP address. For flat record types (ASN, ConnectionType, Domain,
  ISP, AnonymousIP), the fields are named Network and IPAddress. For complex types
  (City, Country, Enterprise), the fields are located at .Traits.Network and
  .Traits.IPAddress.
  Requested by Aaron Bishop. GitHub #128.
• Updated module path to github.com/oschwald/geoip2-golang/v2 to follow
  Go's semantic versioning guidelines for breaking changes.
• Updated examples and documentation to demonstrate proper error handling
  with netip.ParseAddr().
• Updated linting rules to support both v1 and v2 import paths during the
  transition period.

1.11.0

• Go 1.21 or greater is now required.
• The new is_anycast output is now supported on the GeoIP2 Country, City, and Enterprise databases. #119.

Note: 1.10.0 was accidentally skipped.

1.9.0

• Rearrange fields in structs to reduce memory usage. Although this
  does reduce readability, these structs are often created at very
  rates, making the trade-off worth it.

1.8.0

• Set Go version to 1.18 in go.mod.

1.7.0

• Set the minimum Go version in the go.mod file to 1.17.
• Updated dependencies.

1.6.1

• This is a re-release with the changes that were supposed to be in 1.6.0.

1.6.0

• Add support for new mobile_country_code and mobile_network_code outputs
  on GeoIP2 ISP and GeoIP2 Enterprise.

1.5.0

• Add StaticIPScore field to Enterprise. Pull request by Pierre
  Bonzel. GitHub #54.
• Add IsResidentialProxy field to AnonymousIP. Pull request by
  Brendan Boyle. GitHub #72.
• Support DBIP-ASN-Lite database. Requested by Muhammad Hussein
  Fattahizadeh. GitHub #69.

1.4.0

• This module now uses Go modules. Requested by Axel Etcheverry.
  GitHub #52.
• DBIP databases are now supported. Requested by jaw0. GitHub #45.
• Allow using the ASN method with the GeoIP2 ISP database. Pull request
  by lspgn. GitHub #47.
• The example in the README.md now checks the length of the
  subdivision slice before using it. GitHub #51.