Examine source code of Sticky Notes v6

{
  "manifest_version": 2,
  "name": "Sticky Notes",
  "description": "A sticky notes addon for Mozilla.",
  "version": "1.0",
  "permissions": [
    "activeTab",
    "storage"
  ],
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{bfda50e8-50a6-4abe-8375-a95c255600d1}"
    }
  }
}