Examine source code of Task Tabs

{
  "manifest_version": 2,
  "name": "Task Tabs",
  "version": "1.31",
  "description": "A Firefox extension that turns browser tabs into individual task holders.",
  "icons": {
    "32": "icons/tasktabs-32.png",
    "48": "icons/tasktabs-48.png",
    "128": "icons/tasktabs-128.png",
    "512": "icons/tasktabs-512.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tasktab@temporary.com",
      "strict_min_version": "88.0"
    }
  },
  "permissions": [
    "storage",
    "activeTab",
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "https://mytasktabapi.com/*"
  ],
  "web_accessible_resources": [
    "task.html",
    "icons/*.png"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  }
}