v1.9.0

Added

• option to disable auth token for commands (#71 by @LelandSindt)

Changed

• bump golang from 1.16.4 to 1.16.5 (#72 by @dependabot)
• bump github.com/eclipse/paho.mqtt.golang from 1.3.4 to 1.3.5 (#73 by @dependabot)