Examine source code of Turbulence Tab Manager

{
  "manifest_version": 2,
  "name": "Turbulence Tab Manager",
  "short_name": "Turbulence",
  "description": "Tab Manager.",
  "version": "0.1.0",
  "author": "Aleksandr Krivoshchekov (SuperPaintman)",
  "homepage_url": "https://github.com/SuperPaintman/turbulence#readme",
  "developer": {
    "name": "Aleksandr Krivoshchekov (SuperPaintman)",
    "url": "https://github.com/SuperPaintman/turbulence#readme"
  },
  "icons": {
    "16": "icons/icon-16.png",
    "19": "icons/icon-19.png",
    "24": "icons/icon-24.png",
    "32": "icons/icon-32.png",
    "38": "icons/icon-38.png",
    "48": "icons/icon-48.png",
    "50": "icons/icon-50.png",
    "100": "icons/icon-100.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "tabs"
  ],
  "browser_action": {
    "default_icon": "icons/icon-48.png",
    "default_popup": "popup.html"
  }
}