Examine source code of gchange-client

{
  "name": "gchange-client",
  "short_name": "Ğchange",
  "version": "1.4.0",
  "description": "Make exchanges in the libre currency Ğ1",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "storage"
  ],
  "browser_action": {
    "default_title": "Ğchange",
    "default_icon": {
      "32": "img/logo_32px.png",
      "64": "img/logo_64px.png",
      "128": "img/logo_128px.png"
    }
  },
  "icons": {
    "32": "img/logo_32px.png",
    "64": "img/logo_64px.png",
    "128": "img/logo_128px.png"
  },
  "manifest_version": 2
}