Examine source code of Elish

{
  "manifest_version": 2,
  "name": "Vision",
  "version": "1.0.0",
  "description": "It's a main goal reaminder board for a person",
  "icons": {
    "64": "logo/logo_64.png"
  },
  "sidebar_action": {
    "default_icon": {
      "128": "logo/logo_128.png"
    },
    "background": {
      "scripts": [
        "background.js"
      ],
      "persistent": false
    },
    "default_title": "App",
    "default_panel": "index.html",
    "open_at_install": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1dd4a740-7a6f-4971-98a2-d11241ab65f2}"
    }
  }
}