Examine source code of Podcurate

{
  "name": "Podcurate",
  "description": "Simple podcast listening queue manager and podcast feed curation tool",
  "version": "1.0",
  "manifest_version": 2,
  "icons": {
    "128": "icon128.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "https://podcurate.com/*"
  ],
  "browser_action": {
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  }
}