Release v2.0.0

Added

• Initial release with v4.0 API support
• Guzzle HTTP client with retry logic and exponential backoff
• Automatic retries on connection errors, 5xx errors, and 429 rate limits
• Retry-After header support on 429 responses — retry delay respects the server-specified wait time
• Configurable timeouts (5s connection, 30s request)
• RBL monitoring endpoints (hosts, profiles, sources, check, listings)
• Contact management endpoints (contacts, groups)
• Certificate monitoring endpoints (monitors, profiles, errors)
• Pagination support for list endpoints
• Configuration options for timeout and retry settings
• Response wrapper class with ArrayAccess for transparent data access and rate_limit property
• RateLimitInfo class exposing limit, remaining, and reset from IETF draft rate limit headers
• Webhook signature verification with HMAC-SHA256 and constant-time comparison
• Credential validation (account SID and auth token format)
• PHPStan level 8 static analysis
• Comprehensive test suite
• Code coverage reporting
• Security policy documentation
• PHP 8.1+ support

Changed

• Replaced cURL with Guzzle HTTP client
• Switched to plural-only endpoint naming convention
• Simplified exception handling with single Exception class

Security

• Added User-Agent header for API analytics
• Implemented secure credential validation