Dimmer Device updateStateImageOnServer missing

Thanks for this great plugin. I use it extensively with my Tasmota devices.

I noticed recently that the icon for Shims dimmer devices never shows as "on" in the Indigo desktop client or Indigo Touch (despite all other functionality working) . After banging my head against a wall for a while I took a look at the code and noticed there are no updateStateImageOnServer calls for dimmer devices.

I added the code in the attached image and it's now working correctly. Apologies, the computer I'm typing this on does not have a text editor installed that shows line numbers.

Pete

Please create an issue in the GitHub repo for this.