v0.1.1 - Improve retries

Add retry logic to update() and ensure_manual_mode()

Fixed "Lost message synchronization" errors during device setup by adding automatic retry to critical methods that can hit the garbage byte issue:

- device.update(): Now retries up to 3 times (was failing immediately)
- mdp20000.ensure_manual_mode(): Now retries up to 3 times
- Imported async_retry decorator in device.py

This resolves setup failures when connecting to devices, making initial connection much more reliable.

Version bumped to 0.1.1.

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Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>