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.