diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..a7c44dd
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,15 @@
+root = true
+
+[*]
+charset = utf-8
+indent_size = 4
+indent_style = space
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.md]
+trim_trailing_whitespace = false
+
+[*.{yml,yaml}]
+indent_size = 2
diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..946ed92
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,13 @@
+# Path-based git attributes
+# https://www.kernel.org/pub/software/scm/git/docs/gitattributes.html
+
+# Ignore all test and documentation with "export-ignore".
+/.gitattributes     export-ignore
+/.gitignore         export-ignore
+/phpunit.xml.dist   export-ignore
+/tests              export-ignore
+/.editorconfig      export-ignore
+/.php_cs            export-ignore
+/.github            export-ignore
+/psalm.xml          export-ignore
+
diff --git a/README.md b/README.md
index a979162..72f71c5 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ Install this package via [Composer](https://getcomposer.org/).
 composer require stichoza/google-translate-php
 ```
 
-> Note: **PHP 7.1 or later** is required. For older versoins, use `^3.2` version of this package (see [old docs](https://github.com/Stichoza/google-translate-php/tree/3.2#google-translate-php)).
+> Note: **PHP 7.1 or later** is required. For older versions, use `^3.2` version of this package (see [old docs](https://github.com/Stichoza/google-translate-php/tree/3.2#google-translate-php)).
 
 ## Basic Usage
 
@@ -143,7 +143,7 @@ use Stichoza\GoogleTranslate\Tokens\TokenProviderInterface;
 
 class MyTokenGenerator implements TokenProviderInterface
 {
-    public function generateToken(string $source, string $target, string $text) : string
+    public function generateToken(string $source, string $target, string $text): string
     {
         // Your code here
     }
@@ -182,15 +182,15 @@ In addition, `translate()` and `trans()` methods will return `null` if there is
  - `403 Forbidden` response:
    This is not an issue with this package. Google Translate itself has some problems when it comes to translating some characters and HTML entities. See https://github.com/Stichoza/google-translate-php/issues/119#issuecomment-558078133
 
- 
+
 ## Disclaimer
 
 This package is developed for educational purposes only. Do not depend on this package as it may break anytime as it is based on crawling the Google Translate website. Consider buying [Official Google Translate API](https://cloud.google.com/translate/) for other types of usage.
 
 ## Donation
 
-If this package helped you reduce your time to develop something, or it solved any major problems you had, feel free give me a cup of coffee :)
+If this package helped you reduce your time to develop something, or it solved any major problems you had, feel free to give me a cup of coffee :)
 
  - [Patreon](https://www.patreon.com/stichoza)
  - [PayPal](https://paypal.me/stichoza)
- 
+
diff --git a/phpunit.xml b/phpunit.xml
index 4e88f4d..bc4d05c 100644
--- a/phpunit.xml
+++ b/phpunit.xml
@@ -7,11 +7,10 @@
          convertNoticesToExceptions="true"
          convertWarningsToExceptions="true"
          processIsolation="false"
-         stopOnFailure="false"
-         syntaxCheck="false">
+         stopOnFailure="false">
     <testsuites>
         <testsuite name="Application Test Suite">
             <directory>./tests/</directory>
         </testsuite>
     </testsuites>
-</phpunit>
\ No newline at end of file
+</phpunit>
diff --git a/tests/TranslationTest.php b/tests/TranslationTest.php
index b661ead..bfc4487 100644
--- a/tests/TranslationTest.php
+++ b/tests/TranslationTest.php
@@ -42,6 +42,6 @@ public function testRawResponse()
     {
         $rawResult = $this->tr->getResponse('cat');
 
-        $this->assertTrue(is_array($rawResult), 'Method getResponse() should return an array.');
+        $this->assertIsArray($rawResult, 'Method getResponse() should return an array');
     }
 }