Add pear modules, mail and net_smtp via composer (#93)

Add pear modules, mail and net_smtp via composer, remove php 5.6 build due to phpunit 6

lib/composer/vendor/phar-io/manifest/tests/values/ApplicationTest.php

@@ -0,0 +1,44 @@
+<?php
+/*
+ * This file is part of PharIo\Manifest.
+ *
+ * (c) Arne Blankerts <arne@blankerts.de>, Sebastian Heuer <sebastian@phpeople.de>, Sebastian Bergmann <sebastian@phpunit.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace PharIo\Manifest;
+
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @covers PharIo\Manifest\Application
+ * @covers PharIo\Manifest\Type
+ */
+class ApplicationTest extends TestCase {
+    /**
+     * @var Application
+     */
+    private $type;
+
+    protected function setUp() {
+        $this->type = Type::application();
+    }
+
+    public function testCanBeCreated() {
+        $this->assertInstanceOf(Application::class, $this->type);
+    }
+
+    public function testIsApplication() {
+        $this->assertTrue($this->type->isApplication());
+    }
+
+    public function testIsNotLibrary() {
+        $this->assertFalse($this->type->isLibrary());
+    }
+
+    public function testIsNotExtension() {
+        $this->assertFalse($this->type->isExtension());
+    }
+}