v0.2.0

🚀 whatsapp-rust v0.2.0

The first stable release of whatsapp-rust - a high-performance, async Rust library for the WhatsApp Web API.

Since v0.1.0-alpha, we've merged 96 commits bringing significant improvements to stability, performance, and features.

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✨ New Features

• Pair Code Authentication - Link devices using phone number + pair code
• MEX Request/Response Handling - Enterprise messaging support (#203)
• Contact Module - Check phone numbers on WhatsApp, fetch user info (#186)
• Group Management - Query group metadata and participants
• LID/PN Mapping - Support for new WhatsApp identifier system (#181)
• History Sync - Improved app state and message history sync (#169)
• Device Registry - Base key tracking for retry collision detection (#196)
• SKDM Tracking - Sender Key Distribution Message tracking per device (#170)
• Reporting - Privacy-preserving reporting token generation (#187)
• Modular Architecture - Pluggable transport and HTTP client layers

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🔧 Improvements & Fixes

• Enhanced error handling with retry receipts for session issues (#171)
• Better self-sent message handling with LID support
• Improved ciphertext version range support (#166)
• Reduced unwraps across the codebase (#190)
• Optimized buffer handling with std::mem::take (#191)
• Performance improvements in encryption and protocol handling (#164)
• Streamlined InfoQuery construction (#198)
• Simplified storage trait interface (#204)

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🏗️ Architecture

• Modular design - Swappable storage, transport, and HTTP clients
• Runtime agnostic - Works with Tokio, async-std, or WASM
• SQLite included - Default storage backend with concurrency control (#127)
• no_std core - Platform-agnostic wacore for embedded use

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🙏 Acknowledgements

Inspired by whatsmeow (Go) and Baileys (TypeScript).

Full Changelog: v0.1.0-alpha...v0.2.0