Examine source code of GitHub Tweaks

{
  "manifest_version": 2,
  "name": "GitHub Tweaks",
  "version": "1.6.1",
  "description": "Adds a couple of small additions to the GitHub website.",
  "icons": {
    "48": "icons/github.svg",
    "96": "icons/github.svg"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.github.com/*"
      ],
      "js": [
        "scripts/browser-polyfill.min.js",
        "scripts/content/copy-filename.js",
        "scripts/content/hide-all-annotations.js",
        "scripts/content/hide-notifications-icon.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "scripts/browser-polyfill.min.js",
      "scripts/background/tab-update-event.js"
    ]
  },
  "permissions": [
    "*://github.com/*",
    "tabs",
    "webNavigation",
    "storage"
  ],
  "web_accessible_resources": [
    "html/clipboard-copy.html"
  ],
  "options_ui": {
    "page": "html/options.html",
    "browser_style": true,
    "chrome_style": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "github-tweaks@woutuuur.com"
    }
  }
}