refactor(async): add dialer and upgrader (#462)

* chore(deps): update connection and multistream

* feat: add basic dial support for addresses and peers

* test: automatically require all node test files

* fix: dont catch and log in the wrong place

* test: add direct spec test

fix: improve dial error consistency

* feat: add dial timeouts and concurrency

Queue timeouts will result in aborts of the dials

* chore: fix linting

* test: verify dialer defaults

* feat: add initial upgrader

* fix: add more test coverage and fix bugs

* feat: libp2p creates the upgrader

* feat: hook up handle to the upgrader

* feat: hook up the dialer to libp2p

test: add node dialer libp2p tests

* feat: add connection listeners to upgrader

* feat: emit connect and disconnect events

* chore: use libp2p-interfaces

* fix: address review feedback

* fix: correct import

* refactor: dedupe connection creation code

test/utils/mockCrypto.js

@@ -0,0 +1,24 @@
+'use strict'
+
+const PeerId = require('peer-id')
+const Peers = require('../fixtures/peers')
+
+module.exports = {
+  tag: '/insecure',
+  secureInbound: (localPeer, stream) => {
+    return {
+      conn: stream,
+      remotePeer: localPeer
+    }
+  },
+  secureOutbound: async (localPeer, stream, remotePeer) => {
+    // Crypto should always return a remotePeer
+    if (!remotePeer) {
+      remotePeer = await PeerId.createFromJSON(Peers[0])
+    }
+    return {
+      conn: stream,
+      remotePeer: remotePeer
+    }
+  }
+}