[RELEASE] *any* hub (C5/C7/C8) Ecobee No Cloud HAP Thermostat (Local) — direct control of an Ecobee thermostat, no Apple hardware

And success! My upstairs Ecobee 3 is now connected.

I've spent a month trying to get it to work on my C8 Pro via the built-in emulation. Once I had this installed (minor hiccup above) it just worked immediately.