chore(package): update multiaddr to version 2.0.3

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -38,7 +38,7 @@
     "libp2p-spdy": "^0.1.0",
     "libp2p-swarm": "^0.5.5",
     "libp2p-tcp": "^0.8.0",
-    "multiaddr": "^1.1.1",
+    "multiaddr": "^2.0.3",
     "peer-id": "^0.4.0",
     "peer-info": "^0.4.0",
     "pre-commit": "^1.1.1"