v0.8.3 - Tool Consolidation, Enhanced Examples, and Performance Improvements

Performance System Enhancements

• 🚀 Improved performance history with live empirical data updates
• 🚀 Enhanced distribution characteristics framework for real-world performance tuning
• 🚀 Better adaptive learning with actual execution metrics vs theoretical models

Tool Suite Modernization

• ✨ Consolidated 7 separate tools into 6 unified tools with better functionality
• ✨ New system_inspector.cpp - Multi-mode system analysis (replaces 4 tools)
• ✨ Enhanced cpp20_features_inspector.cpp - Comprehensive C++20 detection
• ✨ New learning_analyzer.cpp - Unified adaptive learning analysis
• ✨ Added tool_utils.h - Shared utilities for consistent development

Examples Enhancement

• ✨ New poisson_usage_demo.cpp - Comprehensive Poisson distribution guide
• ✨ New comparative_distributions_demo.cpp - Multi-distribution analysis
• ✨ New error_handling_demo.cpp - Safe libstats usage with factory methods
• ✨ Updated existing examples to use modern .sample() API consistently
• ✨ Added quick_start_tutorial.cpp and uniform_usage_demo.cpp

Quality Improvements

• 🔧 All examples updated with proper factory method usage for safety
• 🔧 Enhanced error handling and user guidance throughout
• 🔧 Tool consolidation reduces maintenance overhead
• 🔧 Version bumped to 0.8.3 across CMakeLists.txt and libstats.h

This release improves performance systems, developer tools, and user examples
with modern patterns, better consolidation, and comprehensive guidance.