Examine source code of Wider Stackoverflow

{
  "manifest_version": 2,
  "name": "WideStackoverflow",
  "version": "1.1",
  "description": "Wide StackOverflow",
  "icons": {
    "128": "icons/fit.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.stackoverflow.com/*"
      ],
      "js": [
        "wide_stackoverflow.js"
      ]
    }
  ]
}