feat: Update package.json to 1.6.1

Fix indent

Assets/MackySoft/MackySoft.SerializeReferenceExtensions/Editor/SubclassSelectorDrawer.cs

@@ -39,7 +39,9 @@ namespace MackySoft.SerializeReferenceExtensions.Editor
 				// Render label first to avoid label overlap for lists
 				Rect foldoutLabelRect = new Rect(position);
 				foldoutLabelRect.height = EditorGUIUtility.singleLineHeight;
-				foldoutLabelRect = EditorGUI.IndentedRect(foldoutLabelRect);
+
+				// NOTE: IndentedRect should be disabled as it causes extra indentation.
+				//foldoutLabelRect = EditorGUI.IndentedRect(foldoutLabelRect);
 				Rect popupPosition = EditorGUI.PrefixLabel(foldoutLabelRect, label);
 
 #if UNITY_2021_3_OR_NEWER

Assets/MackySoft/MackySoft.SerializeReferenceExtensions/package.json

@@ -2,7 +2,7 @@
 	"name": "com.mackysoft.serializereference-extensions",
 	"displayName": "SerializeReference Extensions",
 	"author": { "name": "MackySoft", "url": "https://github.com/mackysoft" },
-	"version": "1.6.0",
+	"version": "1.6.1",
 	"unity": "2021.3",
 	"description": "Provide popup to specify the type of the field serialized by the [SerializeReference] attribute in the inspector.",
 	"keywords": [ "SerializeReference", "Editor" ],

README.md

@@ -19,6 +19,7 @@ The `SubclassSelector` attribute allows you to easily set subclasses of those ab
 - **[New]** Restore values of previous object from JSON when subclass is changed. (required Unity 2021.3 or later)
 - **[New]** Copy & Paste the subclass properties. (required Unity 2021.3 or later)
 - **[New]** Clear & reset the subclass properties. (required Unity 2021.3 or later)
+- **[New]** Covariance / Contravariance support. (required Unity 2023.2 or later)
 
 > See below for the reason for the limitation of versions less than Unity 2021.3.
 >