Examine source code of Hannah

{
  "applications": {
    "gecko": {
      "id": "me@minidump.info",
      "strict_min_version": "55.0"
    }
  },
  "name": "__MSG_application_title__",
  "description": "__MSG_application_description__",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "hannah-16.png",
    "48": "hannah-48.png",
    "128": "hannah-128.png"
  },
  "browser_action": {
    "default_icon": "hannah-16.png"
  },
  "manifest_version": 2,
  "permissions": [
    "contextMenus",
    "tabs"
  ],
  "default_locale": "zh-CN",
  "version": "1.1"
}