diff --git a/Block/System/Config/Form/Field/Precision.php b/Block/System/Config/Form/Field/Precision.php
index 925c807..bd2e6a8 100644
--- a/Block/System/Config/Form/Field/Precision.php
+++ b/Block/System/Config/Form/Field/Precision.php
@@ -1,10 +1,6 @@
 <?php
-/**
- * @category   Evozon
- * @package    Magento_Evozon
- * @copyright  Copyright (c) 2018 Evozon (http://www.evozon.com)
- * @author     Lilian Codreanu <lilian.codreanu@evozon.com>
- */
+
+declare(strict_types=1);
 
 namespace Lillik\PriceDecimal\Block\System\Config\Form\Field;
 
diff --git a/Model/Config.php b/Model/Config.php
index 0d457f2..d45befd 100644
--- a/Model/Config.php
+++ b/Model/Config.php
@@ -1,10 +1,6 @@
 <?php
-/**
- *
- * @package Lillik\PriceDecimal\Model
- *
- * @author  Lilian Codreanu <lilian.codreanu@gmail.com>
- */
+
+declare(strict_types=1);
 
 namespace Lillik\PriceDecimal\Model;
 
diff --git a/Model/ConfigInterface.php b/Model/ConfigInterface.php
index c18495f..83a4b62 100644
--- a/Model/ConfigInterface.php
+++ b/Model/ConfigInterface.php
@@ -1,11 +1,6 @@
 <?php
-/**
- *
- * @package Lillik\PriceDecimal\Model
- *
- * @author  Lilian Codreanu <lilian.codreanu@gmail.com>
- */
 
+declare(strict_types=1);
 
 namespace Lillik\PriceDecimal\Model;
 
diff --git a/Model/Currency.php b/Model/Currency.php
index 9556047..e98ac31 100644
--- a/Model/Currency.php
+++ b/Model/Currency.php
@@ -1,10 +1,6 @@
 <?php
-/**
- *
- * @package package Lillik\PriceDecimal
- *
- * @author  Lilian Codreanu <lilian.codreanu@gmail.com>
- */
+
+declare(strict_types=1);
 
 namespace Lillik\PriceDecimal\Model;
 
diff --git a/Model/Plugin/Currency.php b/Model/Plugin/Currency.php
index 02127df..be9cb03 100644
--- a/Model/Plugin/Currency.php
+++ b/Model/Plugin/Currency.php
@@ -1,10 +1,6 @@
 <?php
-/**
- *
- * @package package Lillik\PriceDecimal\Model\Plugin\Local
- *
- * @author  Lilian Codreanu <lilian.codreanu@gmail.com>
- */
+
+declare(strict_types=1);
 
 namespace Lillik\PriceDecimal\Model\Plugin;
 
diff --git a/Model/Plugin/Local/Format.php b/Model/Plugin/Local/Format.php
index d957d09..4eef5de 100644
--- a/Model/Plugin/Local/Format.php
+++ b/Model/Plugin/Local/Format.php
@@ -1,10 +1,6 @@
 <?php
-/**
- *
- * @package package Lillik\PriceDecimal\Model\Plugin\Local
- *
- * @author  Lilian Codreanu <lilian.codreanu@gmail.com>
- */
+
+declare(strict_types=1);
 
 namespace Lillik\PriceDecimal\Model\Plugin\Local;
 
diff --git a/Model/Plugin/OrderPlugin.php b/Model/Plugin/OrderPlugin.php
index e686ed8..c443a4a 100644
--- a/Model/Plugin/OrderPlugin.php
+++ b/Model/Plugin/OrderPlugin.php
@@ -1,10 +1,6 @@
 <?php
-/**
- *
- * @package Lillik\PriceDecimal\Model\Plugin
- *
- * @author  Lilian Codreanu <lilian.codreanu@gmail.com>
- */
+
+declare(strict_types=1);
 
 namespace Lillik\PriceDecimal\Model\Plugin;
 
diff --git a/Model/Plugin/PriceCurrency.php b/Model/Plugin/PriceCurrency.php
index b3508cb..96814aa 100644
--- a/Model/Plugin/PriceCurrency.php
+++ b/Model/Plugin/PriceCurrency.php
@@ -1,10 +1,6 @@
 <?php
-/**
- *
- * @package Lillik\PriceDecimal\Model\Plugin
- *
- * @author  Lilian Codreanu <lilian.codreanu@gmail.com>
- */
+
+declare(strict_types=1);
 
 namespace Lillik\PriceDecimal\Model\Plugin;
 
diff --git a/Model/Plugin/PriceFormatPluginAbstract.php b/Model/Plugin/PriceFormatPluginAbstract.php
index bb107f7..2948d1b 100644
--- a/Model/Plugin/PriceFormatPluginAbstract.php
+++ b/Model/Plugin/PriceFormatPluginAbstract.php
@@ -1,11 +1,6 @@
 <?php
-/**
- *
- * @package Lillik\PriceDecimal\Model\Plugin
- *
- * @author  Lilian Codreanu <lilian.codreanu@gmail.com>
- */
 
+declare(strict_types=1);
 
 namespace Lillik\PriceDecimal\Model\Plugin;
 
diff --git a/Model/PricePrecisionConfigTrait.php b/Model/PricePrecisionConfigTrait.php
index c009240..0555cee 100644
--- a/Model/PricePrecisionConfigTrait.php
+++ b/Model/PricePrecisionConfigTrait.php
@@ -1,10 +1,6 @@
 <?php
-/**
- *
- * @package Lillik\PriceDecimal
- *
- * @author  Lilian Codreanu <lilian.codreanu@gmail.com>
- */
+
+declare(strict_types=1);
 
 namespace Lillik\PriceDecimal\Model;
 
diff --git a/README.md b/README.md
index 2cb1547..be7c18c 100644
--- a/README.md
+++ b/README.md
@@ -43,3 +43,8 @@ The code is licensed under [Apache-2.0 License](https://www.apache.org/licenses/
 ### TODO 
  - Remove decimals in cart and checkout
  - Remove only zero decimal option ([description](https://github.com/lillik/magento2-price-decimal/issues/35))
+
+### Donation
+If this project help you reduce time to develop, you can give me a cup of coffee :)[![paypal](https://www.paypalobjects.com/en_US/i/btn/btn_donateCC_LG.gif)](https://www.paypal.com/donate?hosted_button_id=LKAG7L4HWMVSL)
+
+![img](./qr-donate.png)
\ No newline at end of file
diff --git a/Test/Unit/Plugin/Model/PriceCurrencyTest.php b/Test/Unit/Plugin/Model/PriceCurrencyTest.php
index 96e67a5..82efc40 100644
--- a/Test/Unit/Plugin/Model/PriceCurrencyTest.php
+++ b/Test/Unit/Plugin/Model/PriceCurrencyTest.php
@@ -1,10 +1,6 @@
 <?php
-/**
- * @category   Magento Module
- * @package    Magento_Lillik
- * @copyright  Copyright (c) 2017 Lilian Codreanu
- * @author     Lilian Codreanu <lilian.codreanu@evozon.com>
- */
+
+declare(strict_types=1);
 
 namespace Lillik\PriceDecimal\Test\Unit\Plugin\Model;
 
diff --git a/Ui/DataProvider/Product/Modifier/Price.php b/Ui/DataProvider/Product/Modifier/Price.php
index 41f7621..58e3655 100644
--- a/Ui/DataProvider/Product/Modifier/Price.php
+++ b/Ui/DataProvider/Product/Modifier/Price.php
@@ -1,11 +1,6 @@
 <?php
 
-/**
- *
- * @package package Lillik\PriceDecimal\Ui\DataProvider\Product\Modifier
- *
- * @author  Lilian Codreanu <lilian.codreanu@gmail.com>
- */
+declare(strict_types=1);
 
 namespace Lillik\PriceDecimal\Ui\DataProvider\Product\Modifier;
 
diff --git a/composer.json b/composer.json
index 2207d10..cf13a41 100644
--- a/composer.json
+++ b/composer.json
@@ -9,8 +9,8 @@
     "version": "1.0.6",
     "authors": [
         {
-            "name": "Lilian Codreanu",
-            "email": "lilian.codreanu@gmail.com",
+            "name": "LillikPro",
+            "email": "support@lillik.pro",
             "role": "Developer"
         }
     ],
@@ -18,7 +18,7 @@
         "source": ""
     },
     "require": {
-        "php": "~5.6.0|7.0.2|7.0.4|~7.0.6|~7.1",
+        "php": "~5.6.0|7.0.2|7.0.4|~7.0.6|~7.1|~7.3|~7.4",
         "magento/framework": "*"
     },
     "autoload": {
diff --git a/qr-donate.png b/qr-donate.png
new file mode 100644
index 0000000..516e358
Binary files /dev/null and b/qr-donate.png differ
diff --git a/registration.php b/registration.php
index e9aefc2..0ab6ba3 100644
--- a/registration.php
+++ b/registration.php
@@ -1,10 +1,6 @@
 <?php
-/**
- *
- * @package Lillik\PriceDecimal
- *
- * @author  Lilian Codreanu <lilian.codreanu@gmail.com>
- */
+
+declare(strict_types=1);
 
 \Magento\Framework\Component\ComponentRegistrar::register(
     \Magento\Framework\Component\ComponentRegistrar::MODULE,
diff --git a/view/frontend/web/js/price-utils.js b/view/frontend/web/js/price-utils.js
index 7f32849..f0cc4d4 100644
--- a/view/frontend/web/js/price-utils.js
+++ b/view/frontend/web/js/price-utils.js
@@ -1,7 +1,3 @@
-/**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
- */
 
 /**
  * @api