- Deprecate NetworkInfo and TransmissionResult classes.
- Add single recipient transmission methods.
- Add a getCurrentMessage method to TcpIpMeshBackend to maintain feature parity when using single recipient transmission methods.
- Increase code abstraction level in transmission methods.
- Remove use of networkIndex except for in constructors, since it can change after each scan.
- Make Espnow backend require at least BSSID to connect, and the TcpIp backend require at least SSID.
- Make printAPInfo method take NetworkInfo as argument.
- Add new TransmissionOutcome class to replace obsolete TransmissionResult.
- Add _scanMutex.
- Improve code abstraction in HelloEspnow.ino.
- Update HelloEspnow.ino example to demonstrate the new features.
- Update and improve comments.
