REFACTOR Silverstripe 5 compatibility (#34)

composer.json

@@ -1,27 +1,31 @@
 {
     "name": "dynamic/silverstripe-products",
     "description": "Create a product catalog in SilverStripe",
+    "license": "BSD-3-Clause",
+    "type": "silverstripe-vendormodule",
+    "keywords": [
+        "silverstripe",
+        "product",
+        "catalog"
+    ],
     "authors": [
         {
             "name": "Dynamic",
-            "email": "[email protected]"
+            "email": "[email protected]",
+            "homepage": "https://www.dynamicagency.com"
         }
     ],
-    "keywords": [
-        "silverstripe"
-    ],
-    "type": "silverstripe-vendormodule",
-    "license": "BSD-3-Clause",
     "require": {
-        "silverstripe/recipe-cms": "^4.0",
-        "dynamic/silverstripe-collection": "^2.0",
-        "symbiote/silverstripe-gridfieldextensions": "^3.4",
-        "bummzack/sortablefile": "^2.0"
+        "bummzack/sortablefile": "^2.0",
+        "dynamic/silverstripe-collection": "^3.0",
+        "silverstripe/recipe-cms": "^5",
+        "symbiote/silverstripe-gridfieldextensions": "^4.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.6",
-        "squizlabs/php_codesniffer": "^3.0"
+        "silverstripe/recipe-testing": "^3"
     },
+    "minimum-stability": "dev",
+    "prefer-stable": true,
     "autoload": {
         "psr-4": {
             "Dynamic\\Products\\": "src",
@@ -31,6 +35,9 @@
     "config": {
         "process-timeout": 600
     },
-    "minimum-stability": "dev",
-    "prefer-stable": true
+    "extra": {
+        "branch-alias": {
+            "dev-master": "2.x-dev"
+        }
+    }
 }