remove connection.closing, not needed for anything
remove connection.closing, not needed for anything
rework the node go routine so that select() is no longer buried in processor code.
Merge branch 'refs/heads/rework_node_goroutine'

Conflicts:
	actuator.go
	sensor.go
DisconnectAllBidirectional
was totally misunderstanding RandomIntInRange behavior.  ugh.
add re-usable training samples for xnor network
fix bug in removeConnection