v2 RC1 Changes (#7)

- Changes `items` and `hasItems` on `DocumentList` to be properties
- Updates dependent option/result library, which contains similar changes

Reviewed-on: #7

tests/unit/Query/DefinitionTest.php

@@ -25,7 +25,7 @@ class DefinitionTest extends TestCase
         parent::tearDown();
     }
 
-    #[TestDox('ensureTable() succeeds for PosgtreSQL')]
+    #[TestDox('ensureTable() succeeds for PostgreSQL')]
     public function testEnsureTableSucceedsForPostgreSQL(): void
     {
         Configuration::overrideMode(Mode::PgSQL);