Examine source code of RemoveGap

{
  "manifest_version": 2,
  "name": "RemoveGap",
  "version": "1.0",
  "description": "Ersetzt alle Genderstile mit Sonderzeichen durch die gewünschte Form.",
  "homepage_url": "https://github.com/nebelkatz/un_gap",
  "icons": {
    "48": "images/icon_48.png",
    "96": "images/icon_96.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/content.js"
      ],
      "css": [
        "content/content.css"
      ]
    }
  ],
  "permissions": [
    "<all_urls>",
    "storage",
    "alarms",
    "notifications"
  ],
  "browser_action": {
    "default_icon": "images/icon_48.png",
    "default_title": "RemoveGap",
    "default_popup": "popup/popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1b91e22b-1801-44c9-ab59-2aa08bcca7ee}"
    }
  }
}