Examine source code of Linkin Tab

{
  "manifest_version": 2,
  "name": "Linkin Tab",
  "version": "0.1.4resigned1",
  "description": "Open external links (and more) in new tabs",
  "homepage_url": "https://gitlab.com/canarduck/linkintab",
  "icons": {
    "48": "icons/linkintab48.png",
    "96": "icons/linkintab96.png"
  },
  "applications": {
    "gecko": {
      "id": "linkintab@canarduck.com",
      "strict_min_version": "54.0a1"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "linkintab.js"
      ]
    }
  ],
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "storage"
  ]
}