Examine source code of CoinStats Cleanup

{
  "manifest_version": 2,
  "name": "CoinStats Banner Remover",
  "version": "1.1",
  "description": "Removes premium banners from CoinStats",
  "browser_specific_settings": {
    "gecko": {
      "id": "coinstats-moretefix@tuta.com"
    }
  },
  "permissions": [
    "*://coinstats.app/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://coinstats.app/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ]
}