Examine source code of Flanders Make Github

{
  "name": "Flanders Make Github",
  "version": "0.0.3",
  "description": "Adds the ability to properly use topics with buttons",
  "homepage_url": "https://github.com/flanders-make-vzw/flanders-make-github-extension",
  "manifest_version": 2,
  "minimum_chrome_version": "91",
  "applications": {
    "gecko": {
      "id": "{6d819869-cf55-4ea4-8654-0af426dd3a37}",
      "strict_min_version": "91.0"
    }
  },
  "permissions": [
    "storage",
    "contextMenus",
    "activeTab",
    "alarms",
    "https://github.com/*",
    "https://api.github.com/*"
  ],
  "browser_action": {
    "default_icon": "icon.png"
  },
  "optional_permissions": [
    "*://*/*"
  ],
  "icons": {
    "100": "icon.png"
  },
  "options_ui": {
    "chrome_style": true,
    "page": "options.html"
  },
  "background": {
    "persistent": false,
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "run_at": "document_start",
      "matches": [
        "https://github.com/*",
        "https://gist.github.com/*"
      ],
      "exclude_matches": [
        "https://*/login/*"
      ],
      "css": [
        "refined-github.css"
      ],
      "js": [
        "refined-github.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "resolve-conflicts.js"
  ]
}