Merge branch 'develop' into RichardPerdaan-patch-1

src/Model/Consignment/AbstractConsignment.php

@@ -675,12 +675,14 @@ public function isEuCountry()
                 'FR',
                 'DE',
                 'GR',
+                'HR',
                 'HU',
                 'IE',
                 'IT',
                 'LV',
                 'LT',
                 'LU',
+                'MT',
                 'PL',
                 'PT',
                 'RO',

src/Support/Collection.php

@@ -1232,12 +1232,14 @@ public function prepend($value, $key = null)
     /**
      * Push an item onto the end of the collection.
      *
-     * @param  mixed  $value
+     * @param  mixed  $values [optional]
      * @return $this
      */
-    public function push($value)
+    public function push(...$values)
     {
-        $this->offsetSet(null, $value);
+        foreach ($values as $value) {
+            $this->items[] = $value;
+        }
 
         return $this;
     }
@@ -1442,7 +1444,7 @@ public function chunk($size)
      * @param  callable|null  $callback
      * @return static
      */
-    public function sort(callable $callback = null)
+    public function sort($callback = null)
     {
         $items = $this->items;