[RELEASE] v0.4.0

Added

• UUID generation utility (Learnosity::Sdk::Uuid.generate()) for feature parity with Python and Node.js SDKs
• Data API support with dedicated DataApi class
  • request() method for single authenticated Data API requests
  • request_iter() method for iterating through paginated responses
  • results_iter() method for iterating through individual results across pages
  • Automatic routing metadata headers: X-Learnosity-Consumer, X-Learnosity-Action, X-Learnosity-SDK
  • HTTP timeout configurations (15s open timeout, 60s read timeout)
• Data API demo added to Rails quickstart application
• Comprehensive unit and integration tests for Data API functionality
• Example usage in examples/simple/data_api_example.rb

Changed

• Updated documentation and examples to use Learnosity::Sdk::Uuid.generate instead of SecureRandom.uuid
• Improved error handling in Data API controller with detailed error messages and backtraces