node registry uses collection
peers turned into specified collection
Peers.add renamed to .addPeer
Graph.rebuildIndex improved
static properties removed
static class references removed from promise params
Graph no longer static
node retrieval for Graph
static references put back
renamed Index methods
sntls added to Node dependencies
static references removed again, preparing code for circular reference
Peer references Node object instead of just load
static references removed from Peer
Node accessor refactored
node accessor renamed to 'builder'