Examine source code of GuiltyGoons Discord

{
  "name": "GuiltyGoons Discord",
  "version": "1.3.1",
  "description": "Mafia.gg with a Guilty Twist!",
  "permissions": [
    "activeTab",
    "webNavigation",
    "tabs",
    "https://mafia.gg/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "icons": {
    "128": "images/guilty_goon.png"
  },
  "manifest_version": 2
}