Examine source code of Everything Squared

{
  "manifest_version": 2,
  "content_scripts": [
    {
      "include_globs": [
        "*"
      ],
      "css": [
        "e2.css"
      ],
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "run_at": "document_end"
    }
  ],
  "converted_from_user_script": true,
  "description": "",
  "name": "Everything Squared",
  "version": "1",
  "applications": {
    "gecko": {
      "id": "generated-54gqqksd36vlvoar68yg7f@chrome-store-foxified-unsigned"
    }
  }
}