v1.0.0 - Initial Release

Initial Release

Added

• Initial release of USPS OAuth PHP library
• OAuth 2.0 authentication with automatic token refresh and caching
• Domestic shipping rate calculations with 10+ service types
• International shipping rate calculations
• Support for all major USPS services (Ground Advantage, Priority Mail, Media Mail, etc.)
• PSR-4 autoloading
• PSR-3 logging support (optional)
• Modern PHP 8.1+ with strict type safety
• Comprehensive exception handling (Authentication, API, HTTP, Rate, Validation)
• Rate adjustment and handling fee support (markup/discount)
• Framework-agnostic HTTP client interface
• cURL-based HTTP client implementation with proper error handling
• Service type enums for type safety (DomesticServiceType, InternationalServiceType)
• Rich Rate model with helper methods
• MIT license for maximum flexibility

Testing

• 43 comprehensive tests (38 unit + 5 integration)
• 120+ test assertions covering all major functionality
• PHPStan level 8 static analysis (strictest type checking)
• PSR-12 code style compliance
• Real API integration tests for production validation

Documentation

• Complete setup and usage guide
• Integration examples (WordPress, Laravel)
• Testing documentation
• Publishing and monetization guides