- Started working on decoupling QueryBuilder from SqlQueryBuilder

- WIP on SearchRequest attributes
- Began working on removing 'Ulmus' class
- WIP on removing SQL query building from Repository (which will become SqlRepository)

src/QueryBuilder.php

@@ -2,7 +2,7 @@
 
 namespace Ulmus;
 
-class QueryBuilder extends QueryBuilder\MysqlQueryBuilder
+class QueryBuilder extends QueryBuilder\Sql\MysqlQueryBuilder
 {
     # Backward compatibility defaulting on MySQL/MariaDB query builder
 }