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MQTT Client Retain Feature #793
Some controllers do not have the ability (or have a limited ability) to restore state after restarting.
This optional feature flag will allow the MQTT gateway client to publish very specific messages (C_SET, and C_INTERNAL w/type I_BATTERY_LEVEL) with the retain flag set.
The current behavior should not be impacted.
I've been using the
I found warnings (compiler or Doxygen related) in the MySensors core library when building the core library verification sketches. Please rebuild your changes locally with all warnings enabled in the Arduino IDE and make sure it compiles cleanly and resubmit your changes. You do not need to resolve warnings that are unrelated to your change.