message: bump express to patch vulnerabilities reported on snyk
  Summary: fix some DoS vulnerabilities in the old Express version
  Reviewers: arik, benchan, alex
  Subscribers: ben
diff: {
  "name": "bitgo",
  - "version": "3.3.2",
  + "version": "3.3.3",
  "description": "BitGo Javascript SDK",
  "main": "./src/index.js",
  "keywords": [
  "create-hmac": "~1.1.4",
  "ecurve": "~1.0.2",
  "eol": "0.5.0",
  - "express": "~4.11.1",
  + "express": "~4.15.3",
  "http-proxy": "1.11.1",
  "lodash": "4.13.1",
  "minimist": "0.2.0",
  