Examine source code of Bonjwa Programm

{
  "manifest_version": 2,
  "name": "Bonjwa Programm",
  "short_name": "Bonjwa Prog.",
  "author": "Michael Schmidt",
  "description": "Displays the latest schedule for the Bonjwa Twitch channel",
  "homepage_url": "https://github.com/virtuaCode/bonjwa-programm",
  "version": "1.2.1resigned1",
  "browser_action": {
    "default_icon": "icons/icon.png",
    "default_popup": "popup/popup.html"
  },
  "icons": {
    "32": "icons/icon32.png",
    "48": "icons/icon48.png"
  },
  "background": {
    "scripts": [
      "background/alarms.js"
    ]
  },
  "permissions": [
    "alarms",
    "notifications"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{89352cf2-b607-41e1-89ed-4e1475383297}"
    }
  }
}