- Added the HAVING and TRUNCATE keyword

- Fixed GroupBy which was not implemented yet
- Added a new SQL raw() function
- From statement now accepts subqueries

src/Event/Repository/CollectionFromQueryInterface.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace Ulmus\Event\Repository;
+
+use Ulmus\EntityCollection;
+
+interface CollectionFromQueryInterface {
+    public function execute(EntityCollection $collection) : EntityCollection;    
+}