Examine source code of Pathbuilder2e notes

{
  "manifest_version": 2,
  "name": "Pathbuilder2e notes",
  "version": "1.9",
  "description": "Adds more notes-fields to Pathbuilder2e",
  "icons": {
    "48": "icons/border-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://pathbuilder2e.com/*"
      ],
      "js": [
        "pathbuilder2e_notes.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{075d112c-b8c2-4636-9117-14abb81d8451}"
    }
  }
}