Create CHANGELOG.md

Author: ianktoo

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).
+
+## [1.0.0] - 2026-01-24
+
+### Added
+- Initial release of Crisis Response Data Pipeline
+- Synthetic crisis scenario generation with LLM support (OpenAI, Anthropic, Google Gemini)
+- Multi-perspective response generation (civilian and first responder roles)
+- Structured data output with facts, uncertainties, analysis, and guidance
+- Support for 40+ crisis categories based on FEMA, WHO, UNDRR, and Red Cross classifications
+- Three quality assurance levels
+- Parallel processing for faster generation
+- Progress tracking with ETA
+- Resume capability for interrupted generation
+- Training format conversion (instruction, conversational, completion)
+- Comprehensive CLI interface
+- Unit tests with Python's built-in unittest
+- Complete documentation suite
+- Hugging Face dataset preparation with 2000 training examples
+
+### Features
+- **Multi-Provider LLM Support**: OpenAI GPT-4o-mini, Anthropic Claude-3-5-Haiku, Google Gemini-2.0-Flash
+- **Optimized Cost**: Default configuration costs ~$11.18 for 2000 samples
+- **High Performance**: ~9-13 seconds per sample, ~250-400 samples/hour
+- **Production Ready**: Automatic retry logic, error handling, validation
+- **Training Ready**: Direct conversion to fine-tuning formats
+
+### Technical Details
+- Python 3.13+ compatible
+- Uses Pydantic for data validation
+- LangChain for prompt management
+- JSONL output format
+- MIT License with attribution requirement