Examine source code of HubQuilt

{
  "manifest_version": 2,
  "name": "HubQuilt",
  "description": "Modular, configurable enhancements for GitHub.",
  "version": "0.0.1",
  "icons": {
    "16": "logo.png",
    "48": "logo.png",
    "128": "logo.png"
  },
  "permissions": [
    "storage",
    "https://github.com/*",
    "https://gist.github.com/*",
    "https://api.github.com/*"
  ],
  "developer": {
    "name": "HubQuilt",
    "url": "https://github.com/TBosak/hubquilt"
  },
  "web_accessible_resources": [
    "file-icons/css/*.css",
    "file-icons/fonts/*.woff2"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "timb63701@gmail.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "options_ui": {
    "open_in_tab": true,
    "page": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://gist.github.com/*",
        "https://github.com/*"
      ],
      "run_at": "document_idle",
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}