Support multiple addresses per component

[lupinglade]

In order for homA to be usable with real HA devices, it is essential to be able to expose multiple devices from a single component. The reason is that many existing technologies rely on USB/serial interfaces/gateways which talk to many devices. In its current state, the architecture of homA seems too simple to support this.

[llauren]

I don't see how this should be a problem. I have an Arduino which is connected to a bank of relays. Some control lighting in the garden, some control the engine heaters of our cars (essential in the Finnish winter). While i could have named my device logically (gardenlights, engineheater), i chose to give it the physical name (switchbank). Admittedly, giving the device a logical name would be simpler.

Also, there is nothing to stop me from subscribing to several device channels from one device. While it would have made my code longer, i could have subscribed to (or as) /devices/gardenlights/# and /devices/engineheater/#. I could also have several devices all subscribing to /devices/gardenlights/# and the device itself would filter out which messages are of importance.