GeoChat v0.1.0 – Dynamic Propagation, GPS Enhancements, and Broker Update

✨ New Features

• Added dynamic movement and message propagation test scenario.
• Introduced multi-source message handling and Uuid aggregation.
• Implemented message queue with concurrent propagation using configured durations.
• Enabled multi-threaded message handling via thread-safe structures.
• Chat messages reset automatically every 5 minutes.

🛠 Improvements

• Improved GPS location handling and error fallback for low-accuracy modes.
• Enhanced UI feedback when waiting for location and during username input.
• Refined propagation logic and parameters based on test feedback.
• Added distance-based propagation control and spreadingTime expiry.
• Replaced default MQTT broker with EMQX Public MQTT Broker for improved stability.

🐛 Fixes

• Fixed message deduplication logic (only one copy of repeated messages is received).
• Corrected message distance rounding errors and minor bugs.
• Ensured delay before chat opens to wait for valid connection.
• Resolved assignment bugs for _received list and indirect neighbor propagation.

🧪 Testing

• Added multiple unit tests:
  • Message removal after expiry,
  • FIFO-based propagation checks,
  • Gradient-based message order validation.

📖 Documentation

• Clarified chat behavior (automatic reset, deduplication) in README.
• Added reference to simulation demo in collektive-examples.

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🔁 Migration note: If you were using the previous broker or testing older propagation behaviors, make sure to update your configuration to the new broker endpoint and reinitialize nodes if needed.