make the context required but nullable in .of()

Author: devxpy

lib/shared_value.dart

@@ -84,7 +84,7 @@ class SharedValue<T> {
 
   /// Get the value held by this state,
   /// and also rebuild the widget in [context] whenever [mutate] is called.
-  T of([BuildContext? context]) {
+  T of(BuildContext? context) {
     if (context != null) {
       InheritedModel.inheritFrom<SharedValueInheritedModel>(
         context,

pubspec.yaml

@@ -1,6 +1,6 @@
 name: shared_value
 description: A straightforward way to manage global state in flutter apps.
-version: 2.1.1
+version: 2.1.2
 author: Dev Aggarwal <[email protected]>
 homepage: https://github.com/scientifichackers/flutter-shared-value