Release version 1.0.1

- Add Twig template engine integration
- Migrate all templates to Twig format
- Add German (Switzerland, Informal) translation
- Improve template organization and security
- Add Composer dependency management
- Create comprehensive changelog

composer.json

@@ -0,0 +1,22 @@
+{
+    "name": "magdev/wc-tier-package-prices",
+    "description": "WooCommerce plugin for tier pricing and package prices with Twig templates",
+    "version": "1.0.1",
+    "type": "wordpress-plugin",
+    "license": "GPL-2.0-or-later",
+    "authors": [
+        {
+            "name": "Marco Graetsch",
+            "homepage": "https://src.bundespruefstelle.ch/magdev"
+        }
+    ],
+    "require": {
+        "php": ">=7.4",
+        "twig/twig": "^3.0"
+    },
+    "autoload": {
+        "classmap": [
+            "includes/"
+        ]
+    }
+}