Examine source code of TestRail Tooltips

{
  "description": "Adding tooltips for long values",
  "manifest_version": 2,
  "name": "TestRail Tooltips",
  "version": "1.2resigned1",
  "homepage_url": "https://github.com/cernyjan/TestRail-Tooltips",
  "icons": {
    "48": "icons/bubble-48.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/bubble-48.png",
      "32": "icons/bubble-48.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://*/*"
      ],
      "js": [
        "jquery-3.2.1.min.js",
        "TestRail-Tooltips.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{eae89993-db5d-4770-b555-2897faa3ca06}"
    }
  }
}