Spirit/manifest.json

{
    "manifest_version": 2,
    "name": "Spirit",
    "version": "1.2",
    "description": "A new tab extension.",
    "developer": {
      "name": "SudoVanilla",
      "url": "https://ark.sudovanilla.org/korbs/Spirit"
    },
    "chrome_url_overrides" : {
      "newtab": "index.html"
    },
    "applications": {
      "gecko": {
        "id": "spirit@sudovanilla.org",
        "strict_min_version": "58.0"
      }
    },
    "incognito": "spanning",
    "permissions": [
      "storage"
    ]
}