Release v0.2.1 - Nested PostaCert Detection & Security Improvements

🎉 What's New in v0.2.1

This release fixes a critical bug with forwarded postacert.eml detection and introduces significant performance and security improvements.

🐛 Fixed

• Fixed forwarded postacert.eml detection: Now correctly detects and processes postacert.eml files that are forwarded as attachments in nested MESSAGE/RFC822 structures
• Improved nested postacert part ID detection algorithm to handle complex IMAP message structures

✨ Added

• Comprehensive test suite for nested postacert detection scenarios
• Performance optimizations with memoization for attachment calculations
• Enhanced error handling for malformed IMAP structures
• Support for environment variable configuration (PEC_HOST, PEC_USERNAME, PEC_PASSWORD)
• Security improvements to prevent credential leaks in test files

🔄 Changed

• Code refactoring: Unified duplicate postacert detection methods into single parameterized method
• Performance: Added memoization to original_attachments, nested_postacerts, and nested_postacert_attachments methods
• Security: Test files now use environment variables instead of hardcoded credentials
• Improved robustness of bodystructure parsing with defensive programming techniques

🔒 Security

• Removed all hardcoded credentials from test files
• Added .env.example for secure configuration
• Enhanced .gitignore to prevent accidental credential commits
• Added security documentation in README

📦 Installation

gem install pec_ruby

🔗 Links

• Documentation
• Changelog
• RubyGems