message: remove deprecated crypto
diff: "blockstack-storage": "0.2.11",
  "cheerio": "^0.22.0",
  "custom-protocol-detection-blockstack": "1.1.3",
  - "crypto": "^0.0.3",
  "ecurve": "^1.0.5",
  "elliptic": "^6.4.0",
  "es6-promise": "^4.1.0",
  