Examine source code of Weather & Clock Dashboard

{
  "manifest_version": 2,
  "name": "Weather & Clock Dashboard",
  "version": "1.2.1",
  "description": "A beautiful new tab replacement with weather, world clocks, and search powered by Yahoo.",
  "chrome_url_overrides": {
    "newtab": "dashboard.html"
  },
  "permissions": [
    "storage",
    "*://wttr.in/*"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'; connect-src 'self' https://wttr.in https://*.paperclip.ing;",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "weather-clock-dashboard@paperclip.ing",
      "strict_min_version": "91.0"
    }
  }
}