Examine source code of Min ToDoList

{
  "manifest_version": 2,
  "name": "Min ToDoList",
  "description": "Minimal ToDo List Extension inspired by Zen Browser",
  "version": "1.0.0",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png",
    "1080": "icon/1080.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "\n      Min ToDo\n    ",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{67c8f9d3-2ad7-42ba-b2c2-a2345e1e1836}"
    }
  }
}