Backport Incident Updates from v3.0.0

app/Bus/Events/IncidentUpdate/IncidentUpdateWasUpdatedEvent.php

@@ -0,0 +1,41 @@
+<?php
+
+/*
+ * This file is part of Cachet.
+ *
+ * (c) Alt Three Services Limited
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace CachetHQ\Cachet\Bus\Events\IncidentUpdate;
+
+use CachetHQ\Cachet\Models\IncidentUpdate;
+
+/**
+ * This is the incident update was updated event.
+ *
+ * @author James Brooks <james@alt-three.com>
+ */
+final class IncidentUpdateWasUpdatedEvent implements IncidentUpdateEventInterface
+{
+    /**
+     * The incident update that has been updated.
+     *
+     * @var \CachetHQ\Cachet\Models\IncidentUpdate
+     */
+    public $update;
+
+    /**
+     * Create a new incident update was updated event instance.
+     *
+     * @param \CachetHQ\Cachet\Models\IncidentUpdate $update
+     *
+     * @return void
+     */
+    public function __construct(IncidentUpdate $update)
+    {
+        $this->update = $update;
+    }
+}