Update Composer, update everything

vendor/doctrine/cache/lib/Doctrine/Common/Cache/FlushableCache.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Doctrine\Common\Cache;
+
+/**
+ * Interface for cache that can be flushed.
+ *
+ * @link   www.doctrine-project.org
+ */
+interface FlushableCache
+{
+    /**
+     * Flushes all cache entries, globally.
+     *
+     * @return bool TRUE if the cache entries were successfully flushed, FALSE otherwise.
+     */
+    public function flushAll();
+}