Allow extending of QueryBuilder

Author: tlmcclatchey

src/QueryBuilder.php

@@ -26,7 +26,7 @@
 use Override;
 use Random\RandomException;
 
-final class QueryBuilder implements BuildableQueryContract
+class QueryBuilder implements BuildableQueryContract
 {
     /**
      * The SQL statement being built.
@@ -222,4 +222,4 @@ private function findFreeAutoParameter(): string
             $i++;
         }
     }
-}
+}