Update composer

Author: donatj

composer.json

@@ -20,8 +20,11 @@
 			"homepage": "http://github.com/henderjon"
 		}
 	],
+	"require": {
+		"php" : ">=5.3.0"
+	},
 	"require-dev": {
-		"phpunit/phpunit": "~4.1"
+		"phpunit/phpunit": "~4.8|~9"
 	},
 	"autoload"   : {
 		"files": ["src/array.php"]

test/ArrayFunctionsTest.php

@@ -1,6 +1,6 @@
 <?php
 
-class ArrayFunctionsTest extends PHPUnit_Framework_TestCase {
+class ArrayFunctionsTest extends \PHPUnit\Framework\TestCase {
 
 	public function testArrayFlatten() {
 		$this->assertEquals(
@@ -53,4 +53,3 @@ public function testArrayKeyRefill() {
 
 
 }
-