Examine source code of Github Condenser

{
  "applications": {
    "gecko": {
      "id": "githubcondenser@summerti.me",
      "strict_min_version": "60.0"
    }
  },
  "manifest_version": 2,
  "name": "Github Condenser",
  "version": "0.2resigned1",
  "content_scripts": [
    {
      "matches": [
        "*://*.github.com/*"
      ],
      "css": [
        "main.css"
      ]
    }
  ]
}