In this commit, we filter out nodes who intend to remain private. We do
this to prevent leaking information about them by forwarding their
NodeAnnouncements.
In this commit, we fix an existing but that would cause the daemon to at
times crash. Before this commit, we access the wrong edge, which would
possibly actually be nil, leading to a panic. In this commit we fix this
by ensuring we access the proper edge which is known to be non-nil at
this point in the control flow.
In this commit, we create a new concrete implementation for the new
discovery.ChannelGraphTimeSeries interface. We also export the
createChannelAnnouncement method to allow the chanSeries struct to
re-use the existing code for creating wire messages from the database
structs.
