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/consolidation/annotated-command/src/Cache/CacheWrapper.php

@@ -0,0 +1,49 @@
+<?php
+namespace Consolidation\AnnotatedCommand\Cache;
+
+/**
+ * Make a generic cache object conform to our expected interface.
+ */
+class CacheWrapper implements SimpleCacheInterface
+{
+    protected $dataStore;
+
+    public function __construct($dataStore)
+    {
+        $this->dataStore = $dataStore;
+    }
+
+    /**
+     * Test for an entry from the cache
+     * @param string $key
+     * @return boolean
+     */
+    public function has($key)
+    {
+        if (method_exists($this->dataStore, 'has')) {
+            return $this->dataStore->has($key);
+        }
+        $test = $this->dataStore->get($key);
+        return !empty($test);
+    }
+
+    /**
+     * Get an entry from the cache
+     * @param string $key
+     * @return array
+     */
+    public function get($key)
+    {
+        return (array) $this->dataStore->get($key);
+    }
+
+    /**
+     * Store an entry in the cache
+     * @param string $key
+     * @param array $data
+     */
+    public function set($key, $data)
+    {
+        $this->dataStore->set($key, $data);
+    }
+}

lib/composer/vendor/consolidation/annotated-command/src/Cache/NullCache.php

@@ -0,0 +1,37 @@
+<?php
+namespace Consolidation\AnnotatedCommand\Cache;
+
+/**
+ * An empty cache that never stores or fetches any objects.
+ */
+class NullCache implements SimpleCacheInterface
+{
+    /**
+     * Test for an entry from the cache
+     * @param string $key
+     * @return boolean
+     */
+    public function has($key)
+    {
+        return false;
+    }
+
+    /**
+     * Get an entry from the cache
+     * @param string $key
+     * @return array
+     */
+    public function get($key)
+    {
+        return [];
+    }
+
+    /**
+     * Store an entry in the cache
+     * @param string $key
+     * @param array $data
+     */
+    public function set($key, $data)
+    {
+    }
+}

lib/composer/vendor/consolidation/annotated-command/src/Cache/SimpleCacheInterface.php

@@ -0,0 +1,35 @@
+<?php
+namespace Consolidation\AnnotatedCommand\Cache;
+
+/**
+ * Documentation interface.
+ *
+ * Clients that use AnnotatedCommandFactory::setDataStore()
+ * are encouraged to provide a data store that implements
+ * this interface.
+ *
+ * This is not currently required to allow clients to use a generic cache
+ * store that does not itself depend on the annotated-command library.
+ * This might be required in a future version.
+ */
+interface SimpleCacheInterface
+{
+    /**
+     * Test for an entry from the cache
+     * @param string $key
+     * @return boolean
+     */
+    public function has($key);
+    /**
+     * Get an entry from the cache
+     * @param string $key
+     * @return array
+     */
+    public function get($key);
+    /**
+     * Store an entry in the cache
+     * @param string $key
+     * @param array $data
+     */
+    public function set($key, $data);
+}