Examine source code of tiny user script manager

{
  "description": "just inject user scripts",
  "manifest_version": 2,
  "name": "tiny user script manager",
  "version": "0.0.8",
  "background": {
    "scripts": [
      "background-script.js"
    ]
  },
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "webNavigation",
    "storage",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "tinyuserscripts@h43z",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}