Group + multiple connections support

[fsaris]

• groups are now discovered and can be controlled like a single device

• Sensors about active connection added

• Improved online/offline status

• Streamlined log tags

• Added optional configuration:

  • min_rssi
  • max_connections
  • allowed_mac_addresses
  • allowed_mesh_ids

• Memory improvements

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This discussion was created from the release Group + multiple connections support.