This commit adds a new interface method `TerminalInfo` and changes its implementation to return an `*HTLCAttempt` so it includes the route for a successful payment. Method `GetFailureReason` is now removed as its returned value can be found in the above method.
routing
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