first metric registeration test
starting to split xbee-specific code out from higher level protocol
serial.go
move some serial code from relay to serial
imports. tests are still broken
cleanup from the mess i made last time
rename accum to rawxbeedevice
small rename
fixed tests to work in new channel world
relay_test is passing again
fixed nil channel in serialchannel
starting to change rawxbeedevice
straightening out all the channels
basic transmit implemented