Core protocol version 0.5.5:
Changed requirements for physical layer:
Devices should now tolerate a fault of 37V to eithr rs485 line,
and the working voltage is now 24V. Devices must survive a continual overvoltage
of 30V but are not required to survive a hot plug to that voltage.

Looser hot plug requirements: 30uH+2Ohm and 300uH+20Ohm. Theese are worse than
worst case values for 100ft + 1000ft of 22 gauge wire.

Also, modified the standard template so that headers with borders don't merge
with the next border in the ugly way they were.