v0.8.0 — the peers that deliver, in colour

Green rows in the peer tables are the connections Bitcoin Lab has seen
deliver a block first at least once. On one real node that is about one in
twelve connected peers — every manual peer and a handful of inbound ones. The
peer that brought the newest block is orange for as long as its star is
up, two minutes, and then turns green.

The route of a block reads better when your peer had the block before any
pool sent a job. The first job is the zero the times are counted from, not a
stop the block passes, so it no longer cuts the ping into two unlabelled
pieces.

Green and orange rows need Bitcoin Lab 1.23.0.