#141 Fixed issues from Travis

Author: Roman Glushko

app/code/Magento/CatalogGraphQl/Model/Product/Option/DateType.php

@@ -3,6 +3,7 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
+declare(strict_types=1);
 
 namespace Magento\CatalogGraphQl\Model\Product\Option;
 

app/code/Magento/QuoteGraphQl/Model/Hydrator/CartHydrator.php

@@ -44,4 +44,4 @@ public function hydrate(CartInterface $cart): array
             'items' => $items,
         ];
     }
-}
+}

app/code/Magento/QuoteGraphQl/Model/Resolver/Cart/AddSimpleProductsToCart.php

@@ -223,4 +223,4 @@ private function getCart(string $cartHash): CartInterface
         $cartId = $this->maskedQuoteIdToQuoteId->execute((string) $cartHash);
         return $this->cartRepository->get($cartId);
     }
-}
+}

app/code/Magento/QuoteGraphQl/Model/Resolver/CartItem/CustomizableOptions.php

@@ -232,4 +232,4 @@ private function getCurrencySymbol(): string
 
         return $store->getBaseCurrency()->getCurrencySymbol();
     }
-}
+}