Lost connectivity after plugin update 
I've noticed that I've lost connectivity with homebridge after the last few times I've updated this plugin via npm. Homebridge is still running just fine, but the devices are unreachable. The only way to get it back is to delete the "persist" folder AND change the "username" in the config.json file.

Any suggestions for this? Every time this happens I have to remove and re-add the homebridge accessory, which means I have to go through and manually assign each device to the appropriate room again. Obviously, this is somewhat tedious!

I wasn't sure if this was a homebridge issue or specific to this plugin (since it has only happened when updating this plugin).
