2.3.0

New features

• Hono services and adapters could be started locally (not in containers) for development/test purposes.
• The MQTT adapter now has experimental support for authenticating devices using the JWT based authentication scheme
  employed by Google IoT Core.
• The protocol adapters now have experimental support for using Google Pub/Sub as the messaging infrastructure.
  Support is currently limited to publishing downstream events and telemetry messages to Pub/Sub.
• The JDBC based registry now supports the Device Registry Management API's search Tenants and search Devices
  operations. However, sorting and filtering is not yet implemented.

Fixes & Enhancements

• The MQTT adapter did forward command messages for devices behind a gateway when the gateway subscription was
  targeting the gateway itself with topic name command//[<gateway-id>]/req/#. This has been fixed.
  For a subscription with such a topic name, only commands for the gateway itself are forwarded, not commands for
  devices, that the gateway acts on behalf of.
• The LoRaWAN adapter now transforms all devEUIs hex encoded and upper case. All LoRaWAN devices should therefore be
  registered upper case and hex encoded.