Examine source code of Cat Tab

{
  "name": "Cat Tab",
  "version": "1.5.2",
  "author": "chick_0",
  "description": "Meet the cat on the new tab.",
  "chrome_url_overrides": {
    "newtab": "tab/app.html"
  },
  "chrome_settings_overrides": {
    "homepage": "tab/app.html"
  },
  "icons": {
    "64": "icons/64.png",
    "128": "icons/128.png",
    "192": "icons/192.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "cat-ext@ch1ck.xyz",
      "strict_min_version": "100.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "manifest_version": 2
}