Examine source code of Prettier Zulip

{
  "name": "Prettier Zulip",
  "version": "0.0.1",
  "manifest_version": 2,
  "description": "Zulip, but prettier.",
  "icons": {
    "32": "icons/32x32.png",
    "48": "icons/48x48.png",
    "128": "icons/128x128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.zulipchat.com/*",
        "*://*.zulip.org/*",
        "*://*.zulip.com/*"
      ],
      "css": [
        "styles.css"
      ]
    }
  ],
  "permissions": [
    "activeTab",
    "storage",
    "declarativeContent"
  ],
  "update_url": "https://raw.githubusercontent.com/abhigyank/Prettier-Zulip/main/updates/updates.xml"
}