Examine source code of BGA Sort

{
  "manifest_version": 2,
  "name": "BGA Sort",
  "version": "1.5",
  "description": "Sorts the list of gamers on the games based on their current points.",
  "icons": {
    "48": "icons/bga-sort-48.png",
    "64": "icons/bga-sort-64.png",
    "96": "icons/bga-sort-96.png",
    "128": "icons/bga-sort-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://boardgamearena.com/*"
      ],
      "js": [
        "scripts/bga-gamer.js",
        "scripts/bga-gamers.js",
        "scripts/bga-sort.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{0b36beb6-dd88-4005-b047-cdb0c1c7173c}"
    }
  }
}