Added changed log for v4.2

Author: devmaslov

docs/CHANGELOG.md

@@ -4,6 +4,14 @@ title: Changelog
 sidebar_label: Changelog
 ---
 
+## 4.2
+
+New features:
+
+- [@Input](annotations_reference.md#input-annotation) annotation is introduced as an alternative to `@Factory`. Now GraphQL input type can be created in the same manner as `@Type` in combination with `@Field` - [example](input_types.md#input-annotation).
+- New attributes has been added to [@Field](annotations_reference.md#field-annotation) annotation: `for`, `inputType` and `description`.
+- The following annotations now can be applied to class properties directly: `@Field`, `@Logged`, `@Right`, `@FailWith`, `@HideIfUnauthorized` and `@Security`.
+
 ## 4.1
 
 Breaking change: