Use short array syntax

Author: johnkary

src/JohnKary/PHPUnit/Listener/SpeedTrapListener.php

@@ -47,14 +47,14 @@ class SpeedTrapListener implements TestListener
      *
      * @var array
      */
-    protected $slow = array();
+    protected $slow = [];
 
     /**
      * Construct a new instance.
      *
      * @param array $options
      */
-    public function __construct(array $options = array())
+    public function __construct(array $options = [])
     {
         $this->loadOptions($options);
     }

src/JohnKary/PHPUnit/Listener/Tests/SomeSlowTest.php

@@ -43,11 +43,11 @@ public function testWithDataProvider($time)
     }
     public function provideTime()
     {
-        return array(
-            'Rock' => array(800),
-            'Chalk' => array(700),
-            'Jayhawk' => array(600),
-        );
+        return [
+            'Rock' => [800],
+            'Chalk' => [700],
+            'Jayhawk' => [600],
+        ];
     }
 
     /**