Release v0.3.0

🎯 Major Update - Enhanced Assertions & Documentation

py-logguard features a completely revamped assertion system, improved exception hierarchy, and comprehensive documentation updates.

Revamped Assertion System: Complete overhaul with enhanced documentation and flexible failure handling in development and production environments
New Assertion Exceptions: Added specialized exceptions for assert operations with improved error handling
Demo Script: Added comprehensive demo script showcasing LogGuard capabilities
Makefile Enhancement: New lint-fix target for automatic code fixing with Ruff

Note: This release includes breaking changes to the assertion system. Please review the updated documentation for migration details.

Fixed issues with assertion error handling, now properly raising exceptions instead of logging errors in production environments
Fixed get_logger function to ensure correct logger retrieval and configuration:
- Before: get_logger always created a new logger instance, leading to potential issues with multiple loggers and inconsistent logging, requiring set force=True to override existing loggers

Exception Hierarchy: Migrated from AppBaseError to LogGuardError as the base exception class for better naming consistency
AppLogger Enhancement: Improved logging configuration logic and documentation
Handler Management: Better AppLogger setup and improved handler management
Lazy Loading: Optimized imports and lazy loading for better performance
Repository Cleanup: Removed outdated example scripts to streamline repository structure

Package Documentation: Updated for clarity and improved structure
README Updates: Comprehensive README update highlighting new features and capabilities
Enhanced Docstrings: Improved documentation across all modules