Don't use @published for ViewStore state (#199)

* Don't use @published for ViewStore state

* Update ci.yml

* Update format.yml

Author: stephencelis

.github/workflows/ci.yml

@@ -3,7 +3,7 @@ name: CI
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
     branches:
       - '*'

.github/workflows/format.yml

@@ -3,7 +3,7 @@ name: Format
 on:
   push:
     branches:
-      - master
+      - main
 
 jobs:
   swift_format:

Sources/ComposableArchitecture/ViewStore.swift

@@ -66,7 +66,11 @@ public final class ViewStore<State, Action>: ObservableObject {
   }
 
   /// The current state.
-  @Published public internal(set) var state: State
+  public private(set) var state: State {
+    willSet {
+      self.objectWillChange.send()
+    }
+  }
 
   let _send: (Action) -> Void