Add the missing channel field to the final hop in our clear text
route test case. Note that this is the channel of the hop. With the
addition of stricter validation, we'll need this so that the
penultimate hop has a non-zero next channel ID.
The routing package implements authentication+validation of channel
announcements, pruning of the channel graph, path finding within the network,
sending outgoing payments into the network and synchronizing new peers to our
channel graph state.
Installation and Updating
$ go get -u github.com/lightningnetwork/lnd/routing