feat: introduce default initialization for ScreenUtilPlus fields and make designSize optional.

Author: muhammadkamel

CHANGELOG.md

@@ -4,6 +4,13 @@
 
 All notable changes to this project will be documented in this file.
 
+## [1.3.0] - 2025-12-07
+
+### Added
+
+- **Default Initialization**: `ScreenUtilPlus` fields now initialize with default values (`defaultSize` of 360x690) instead of empty/zero values, preventing issues when accessed before explicit configuration.
+- **Optional Configuration**: `designSize` parameter in `init`, `configure`, and `ScreenUtilPlusInit` is now optional, defaulting to 360x690. This allows for simpler setup when using standard defaults.
+
 ## [1.2.2] - 2025-12-07
 
 ### Changed

pubspec.yaml

@@ -1,6 +1,6 @@
 name: flutter_screenutil_plus
 description: A powerful Flutter plugin for adaptive screen and font scaling with CSS-like breakpoints and SwiftUI-style size classes. Includes responsive scaling and breakpoint-aware widgets.
-version: 1.2.2
+version: 1.3.0
 homepage: https://github.com/muhammadkamel/flutter_screenutil_plus
 repository: https://github.com/muhammadkamel/flutter_screenutil_plus
 license: MIT