v0.1.0

[0.1.0] - 2025-11-24

Added

• Centralized Configuration: Added HttpClientDefaults and RetryPolicyDefaults for consistent default values.
• Extensibility Hooks: Added protected virtual methods in CoinbaseClient (BuildRequest, ConfigureRequest, SendHttpRequestAsync, ValidateResponse) to simplify subclass customization.
• Robust Serialization: Added NullOnUnknownEnumConverter to gracefully handle unknown enum values as null during deserialization.
• Testing Infrastructure: Added StubHttpMessageHandler and comprehensive unit tests covering client logic, credentials, error handling, and serialization.

Changed

• Code Refactoring: Consolidated request logic and exception handling in CoinbaseClient, significantly reducing code duplication in subclasses like CoinbasePrimeClient.
• Retry Logic Simplified: Removed redundant IRetryPolicyProvider abstraction; SystemNetHttpClient now integrates directly with the Polly policy provider.
• Thread Safety: Improved JsonUtility initialization using Lazy<T> to replace manual locking.
• API Visibility: Restricted visibility of internal properties (e.g., CoinbaseClient.HttpClient, CoinbaseService.Client) to protected to better encapsulate implementation details.
• Documentation: Unified retry policy and cancellation documentation across XML comments and README.

Fixed

• Parameter Validation: Fixed potential NullReferenceException in CoinbaseCredentials constructor.