0.6.1 - Fix default message retain setting for clients to avoid receiving the last message on startup

Small change to how we tell clients to send messages, should prevent weird startup messages from being received. May require clearing your MQTT topics, until a new message is sent on that topic I think.

What's Changed

• fix: Don't tell client to use retain=true for messages. by @W-Floyd in #56

Full Changelog: 0.6.0...0.6.1