message: Add coverage script
diff: "nanoassert": "^1.0.0"
  },
  "devDependencies": {
  + "browserify": "^14.4.0",
  + "coverify": "^1.4.1",
  "tape": "^4.6.3"
  },
  "scripts": {
  - "test": "tape test"
  + "test": "tape test.js",
  + "cov": "browserify -t coverify test.js | node | coverify"
  },
  "repository": {
  "type": "git",
  