fix some coding standards

Author: bircher

src/PhpMerge/PhpMerge.php

@@ -43,6 +43,9 @@ final class PhpMerge extends PhpMergeBase implements PhpMergeInterface
 
     /**
      * PhpMerge constructor.
+     *
+     * @param Differ|null $differ
+     *   The differ to use.
      */
     public function __construct(Differ $differ = null)
     {

test/PhpMerge/Test/AbstractPhpMergeTest.php

@@ -480,6 +480,6 @@ public function testInline()
      */
     protected static function split($string, $emptyLines = 1)
     {
-        return implode("\n", str_split($string)) . str_repeat("\n", $emptyLines);
+        return implode("\n", str_split($string)).str_repeat("\n", $emptyLines);
     }
 }

test/PhpMerge/Test/LineTest.php

@@ -22,7 +22,7 @@
  */
 class LineTest extends TestCase
 {
-    
+
     public function testCreate()
     {
 
@@ -47,7 +47,7 @@ public function testCreate()
         ["replaced\n", 2],
         ["replacement\n", 1],
         ["unchanged\n", 0],
-        ["removed\n", 2]
+        ["removed\n", 2],
         ];
 
         $lines = [

test/bootstrap.php

@@ -1,7 +1,7 @@
 <?php
 declare(strict_types=1);
 
-$autoloadFile = __DIR__ . '/../vendor/autoload.php';
+$autoloadFile = __DIR__.'/../vendor/autoload.php';
 if (!file_exists($autoloadFile)) {
     throw new RuntimeException('Install dependencies to run test suite.');
 }