Examine source code of better-old-reddit

{
  "manifest_version": 2,
  "name": "Reddit Classic",
  "version": "1.0",
  "description": "Auto-redirect to Old Reddit with enchanced features.",
  "permissions": [
    "storage",
    "webNavigation"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.reddit.com/*",
        "*://old.reddit.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Reddit Classic Settings"
  },
  "icons": {
    "16": "reddit classic logo.png",
    "48": "reddit classic logo.png",
    "128": "reddit classic logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{af45b86a-342e-4b3b-adc9-72c80cae2c2c}"
    }
  }
}