Examine source code of PandA-mix-plus

{
  "manifest_version": 2,
  "name": "panda-mix-plus",
  "version": "0.0.9",
  "description": "This add-on makes it easier to use PandA, Kyoto University's learning support system.",
  "homepage_url": "https://github.com/OkanoShinri/PandA-Mix-Plus",
  "icons": {
    "48": "icons/48.png"
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://panda.ecs.kyoto-u.ac.jp/*"
      ],
      "js": [
        "src/content_scripts/content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "background": {
    "scripts": [
      "src/background-scripts/background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a0eb39e4-fe32-430a-a245-ddaab0f94ef0}"
    }
  }
}