Examine source code of Passhash Clipboard

{
  "name": "Passhash Clipboard",
  "author": "Michiel Buddingh",
  "developer": {
    "name": "Michiel Buddingh",
    "url": "https://github.com/michielbuddingh"
  },
  "description": "Simple version of wijjo's old passhash extension, which only interacts with the clipboard, so it needs minimal permissions.  Use this if you have a lot of old generated passwords, please don't use it for new sites.",
  "manifest_version": 2,
  "version": "1.0.1resigned1",
  "homepage_url": "https://github.com/michielbuddingh/wijjo-passhash-webextension",
  "icons": {
    "16": "icons/icon.svg"
  },
  "content_security_policy": "default-src 'self'",
  "incognito": "spanning",
  "permissions": [
    "activeTab",
    "storage",
    "clipboardWrite"
  ],
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": "icons/icon.svg",
    "default_title": "Hash password",
    "default_popup": "popup/hash_password.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{283a7ea2-6dc5-44a5-a07d-ef3ec1c9fe36}"
    }
  }
}