Letter Swap Game

Swap letters to eliminate groups of three identical ones.

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manifest.json

{
  "name": "Letter Swap Game",
  "short_name": "letter-swap",
  "version": "0.1.0",
  "description": "Swap letters to eliminate groups of three identical ones.",
  "icons": {
    "16": "images/logo.png",
    "48": "images/logo.png",
    "128": "images/logo.png"
  },
  "action": {
    "default_icon": "images/logo.png",
    "default_popup": "index.html"
  },
  "permissions": [],
  "offline_enabled": true,
  "manifest_version": 3,
  "content_security_policy": {
    "extension_pages": "default-src 'self'; style-src 'self' 'unsafe-inline'; object-src 'self'; img-src *"
  },
  "update_url": "https://edge.microsoft.com/extensionwebstorebase/v1/crx"
}