Examine source code of Tab Manager Lite

{
  "name": "Tab Manager Lite",
  "description": "Manage the tabs how you like.",
  "author": "Andronachi Marian",
  "developer": {
    "name": "Andronachi Marian",
    "url": "https://github.com/AndRo-Marian/TabManagerLite"
  },
  "icons": {
    "48": "source/icons/48.png",
    "96": "source/icons/96.png"
  },
  "browser_action": {
    "default_title": "Tab Manager Lite",
    "default_popup": "source/browser.html",
    "default_icon": {
      "16": "source/icons/favicon.png",
      "32": "source/icons/32.png"
    }
  },
  "background": {
    "scripts": [
      "source/js/HotKey.js",
      "source/js/service.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "source/js/HotKey.js",
        "source/js/content.js"
      ],
      "match_about_blank": true,
      "run_at": "document_end",
      "all_frames": true
    }
  ],
  "permissions": [
    "storage",
    "tabs",
    "search",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{01502e7f-2336-47d6-8332-28d45f4e580e}"
    }
  },
  "manifest_version": 2,
  "version": "1.0.4.1"
}