Examine source code of Lazarus Project

{
  "manifest_version": 2,
  "name": "Lazarus Project",
  "version": "3.2",
  "description": "Passively improve Firefox performance by suspending unused tabs and cleaning up performance-heavy cache data. Highly customizable for advanced users.",
  "permissions": [
    "tabs",
    "storage",
    "browsingData",
    "contextMenus",
    "sessions"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "applications": {
    "gecko": {
      "id": "lazarusproject@firefox.com"
    }
  }
}