This commit adds handling for errors that originate after the
introduction node when making payment to a blinded route. This
indicates that the introduction node is not obeying the spec, so
it is punished for the violation.
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