Examine source code of Reddit JSON UI

{
  "name": "Reddit JSON UI",
  "browser_specific_settings": {
    "gecko": {
      "id": "temporary@addon.com",
      "strict_min_version": "100.0"
    }
  },
  "version": "0.0.1",
  "description": "A customizable UI for Reddit's JSON pages",
  "homepage_url": "https://github.com/dan-lovelace/reddit-json-ui",
  "manifest_version": 2,
  "icons": {
    "128": "logo_128.png"
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.reddit.com/*"
      ],
      "css": [
        "main.css"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "permissions": [
    "tabs",
    "storage"
  ],
  "web_accessible_resources": [
    "reddit_logo_32.png",
    "sandbox.html"
  ],
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'"
}