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This is the one we're using in secio/multihash.

Remove a lot of allocations, and fix some ambiguous naming

Additionally, there it may require less allocations to pack the interface value to sort.Sort now, and lint warning about modifying a receiver in peerDistanceSorter.appendPeersFromList goes away.

the `copy` function will use  the minimum of len(src) and len(dst)

PeerRemoved was called even when the peer wasn't in the routing table.

add gomod support // tag v0.0.1.

gx publish 2.2.23

gx publish 2.2.18

gx publish 2.2.16

small perf improvements

(drive by nits)