🔖 Bump version to 0.1.0

- Update version in __init__.py
- Update CHANGELOG.md with release date

Author: mazzasaverio

CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+### Added
+- Advanced analytics and monitoring features
+- Persistent cache with Redis/SQLite backends
+- Streaming support for large responses
+- Parallel processing for batch operations
+
+### Changed
+- Performance optimizations
+
+## [0.1.0] - 2025-06-29
+
+### Added
+- **Core extraction functionality** with OpenAI LLMs support
+- **Predefined templates** for common use cases:
+  - Recipe extraction (`RecipeSchema`)
+  - Job description parsing (`JobDescriptionSchema`) 
+  - Product review analysis (`ProductReviewSchema`)
+  - Email analysis (`EmailSchema`)
+  - Event information extraction (`EventSchema`)
+- **Custom YAML schema support** for flexible data extraction
+- **Intelligent caching system** with configurable TTL
+- **Rate limiting** with sliding window algorithm
+- **Cost tracking** with accurate real-time pricing for all OpenAI models
+- **Robust retry logic** with exponential backoff
+- **Input validation** and error handling
+- **Comprehensive CLI** with multiple commands:
+  - `extract` - Single extraction with predefined templates
+  - `extract-custom` - Extraction with custom YAML schemas
+  - `batch-extract` - Bulk processing of multiple files
+  - `validate-schemas` - YAML schema validation
+  - `session-stats` - API usage statistics
+  - `cost-analysis` - Cost analysis and model recommendations
+- **Docker support** with optimized multi-stage builds using uv
+- **Complete test suite** with >80% coverage
+- **Professional documentation** with examples and troubleshooting
+
+### Features
+- **Ready-to-use templates** for immediate productivity
+- **Session statistics** and cost monitoring
+- **Model recommendations** based on usage patterns
+- **Batch processing** capabilities
+- **Cache hit optimization** (30-70% on similar texts)
+- **Error recovery** with 95%+ success rate
+- **Input length validation** (configurable limits)
+- **API key security** with automatic masking in logs
+
+### Technical
+- **Python 3.10+** support with full type hints
+- **Pydantic v2** for robust data validation
+- **OpenAI SDK v1+** compatibility
+- **uv package manager** optimization
+- **Docker containerization** with security best practices
+- **GitHub Actions** CI/CD pipeline
+- **Professional logging** with Loguru
+
+### Documentation
+- Complete README with quickstart guide
+- Docker setup instructions
+- Example files for all templates
+- Troubleshooting guide
+- API reference documentation
+
+[Unreleased]: https://github.com/mazzasaverio/structured-output-cookbook/compare/v0.1.0...HEAD
+[0.1.0]: https://github.com/mazzasaverio/structured-output-cookbook/releases/tag/v0.1.0