Release version 1.1.1 - Cart quantity field hiding

Enhanced package quantity restriction enforcement by hiding the cart
quantity input field when restrictions are enabled. This prevents
customers from modifying quantities in the cart to bypass package
restrictions.

Changes:
- Added cart quantity input hiding for restricted products
- Implemented woocommerce_cart_item_quantity filter hook
- Created maybe_hide_cart_quantity_input() method in WC_TPP_Cart
- Fixed cart quantity bypass vulnerability
- Cart displays quantity as read-only text for restricted products

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

composer.json

@@ -1,7 +1,7 @@
 {
     "name": "magdev/wc-tier-package-prices",
     "description": "WooCommerce plugin for tier pricing and package prices with Twig templates",
-    "version": "1.1.0",
+    "version": "1.1.1",
     "type": "wordpress-plugin",
     "license": "GPL-2.0-or-later",
     "authors": [