v5.0.0

• Added support for API v2.7 (users management and related features)
• Internalized dependencies (Newtonsoft.Json, Flurl) for better version compatibility
• Added support for .NET 9.0
• Added support for problem+json error format
• Breaking change: Renamed VerifaliaRestClient to VerifaliaClient
• Breaking change: Renamed SubmitAsync() to RunAsync() in VerifaliaClient.EmailVerifications
• Breaking change: Renamed namespace EmailValidation to EmailVerification and related types
• Breaking change: Renamed *Validation* classes to *Verification* throughout the library
• Breaking change: Renamed ListSegment to PagedResult and related types
• Fixed cancellation token handling during email verification retrieval when issues occur
• Improved documentation throughout the library
• Updated code samples

Full Changelog: v4.2.1...v5.0.0