Examine source code of Draggable Connections

{
  "manifest_version": 2,
  "name": "Draggable Connections",
  "version": "0.9",
  "author": "Geoffrey Christopher Martin-Noble",
  "description": "Adds drag and drop functionality to the NYT Connections game.",
  "homepage_url": "https://github.com/GMNGeoffrey/draggable-connections",
  "icons": {
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "permissions": [
    "https://www.nytimes.com/games/connections"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.nytimes.com/games/connections",
        "*://*.nytimes.com/games/connections?*",
        "*://*.nytimes.com/games/connections/*"
      ],
      "js": [
        "third_party/gsap.min.js",
        "third_party/Draggable.min.js",
        "third_party/Flip.min.js",
        "draggable-connections.js",
        "main.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a155ef5b-95cf-4022-bfc9-fc94aef8c18a}"
    }
  }
}