Release version 1.1.12 - Final redeclaration fix

Fixed critical class redeclaration error for WC_Tier_Package_Prices
affecting version 1.1.11. This completes all redeclaration protection
by protecting the main plugin class.

Fixes:
- Class redeclaration error for WC_Tier_Package_Prices
- Fatal error "Cannot redeclare class WC_Tier_Package_Prices" when plugin file loaded multiple times
- Plugin activation failures caused by class redeclaration

Technical Changes:
- Wrapped WC_Tier_Package_Prices class declaration in class_exists() check
- Completes comprehensive redeclaration protection for all plugin components
- All functions, constants, and classes now safely guarded against redeclaration
- Plugin now fully protected from all redeclaration scenarios

Protected Components:
- Functions: wc_tpp_woocommerce_missing_notice(), wc_tpp_init()
- Constants: WC_TPP_VERSION, WC_TPP_PLUGIN_DIR, WC_TPP_PLUGIN_URL, WC_TPP_PLUGIN_BASENAME
- Classes: WC_Tier_Package_Prices

Updated Files:
- wc-tier-and-package-prices.php (version 1.1.12, class protection)
- composer.json (version 1.1.12)
- CHANGELOG.md (v1.1.12 section)
- All translation files compiled (.mo files)

🤖 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": "1.1.11",
+    "version": "1.1.12",
     "type": "wordpress-plugin",
     "license": "GPL-2.0-or-later",
     "authors": [