Debug: Allow implementers to connect additional signals to read via custom...

Debug: Allow implementers to connect additional signals to read via custom Abstract Register commands

Debug: fix bugs in the custom interface.

Debug: Custom only supported for read accesses at this time (write = 0)

Debug: make sink node in the Periphery trait for custom connections to hook to

Debug: diplomacize the custom paramters connection

Debug: make the custom connection diplomatic

Debug custom: invert polarity since it shoudl be from view of the Source

Debug: use some better edge/bundle accessor patterns

Debug: diplomacy prefers Nodes be called 'node'