New Serial/UART Port

A serial / UART port has been added, which adds a dramatic number of possibilities for ChatterBox use. The features behind this are still under development, but essentially, you will be able to securely receive sensor data, send commands, connect a pair of ChatterBoxes (wired), and more, using this new port. This means, for instance, you could set up a detector of some sort, and when the desired (or undesired) thing is detected, a notification to any or all ChatterBox devices in your cluster could be sent, letting you know and/or triggering other devices that are linked to a ChatterBox..all using the same direct or mesh deliviery, security, and digital signatures as messaging does. Building out this feature will probably be my focus for the next month or two.