去掉flutter版本限制

 #!/bin/sh
 # This is a generated file; do not edit or check into version control.
-export "FLUTTER_ROOT=D:\Develop\flutter"
-export "FLUTTER_APPLICATION_PATH=D:\Develop\Project\flutter_screenutil\example"
-export "FLUTTER_TARGET=lib\main.dart"
+export "FLUTTER_ROOT=/Users/lizhuoyuan/Development/flutter"
+export "FLUTTER_APPLICATION_PATH=/Users/lizhuoyuan/Development/Project/flutter_screenutil/example"
+export "FLUTTER_TARGET=/Users/lizhuoyuan/Development/Project/flutter_screenutil/example/lib/main.dart"
 export "FLUTTER_BUILD_DIR=build"
-export "SYMROOT=${SOURCE_ROOT}/../build\ios"
-export "OTHER_LDFLAGS=$(inherited) -framework Flutter"
-export "FLUTTER_FRAMEWORK_DIR=D:\Develop\flutter\bin\cache\artifacts\engine\ios"
+export "SYMROOT=${SOURCE_ROOT}/../build/ios"
+export "FLUTTER_FRAMEWORK_DIR=/Users/lizhuoyuan/Development/flutter/bin/cache/artifacts/engine/ios"
 export "FLUTTER_BUILD_NAME=1.0.0"
 export "FLUTTER_BUILD_NUMBER=1"
-export "DART_OBFUSCATION=false"
-export "TRACK_WIDGET_CREATION=false"
-export "TREE_SHAKE_ICONS=false"
-export "PACKAGE_CONFIG=.packages"
+export "TRACK_WIDGET_CREATION=true"

@@ -102,7 +102,7 @@ class _ExampleWidgetState extends State<ExampleWidget> {
               textAlign: TextAlign.center,
             ),
             SizedBox(
-              height: ScreenUtil().setHeight(100),
+              height: 5.h,
             ),
             Text('System font scaling factor:${ScreenUtil().textScaleFactor}'),
             Column(

@@ -5,7 +5,6 @@ homepage: https://github.com/OpenFlutter/flutter_screenutil/tree/beta
 
 environment:
   sdk: ">=2.6.0 <3.0.0"
-  flutter: ">=1.19.0-4.3.pre"
 
 dependencies:
   flutter: