Improve content saving, label editing

CHDataManagement/Model/Item/ChangeObservingItem.swift

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+import Foundation
+import Combine
+
+class ChangeObservingItem: ObservableContentItem {
+    
+    unowned let content: Content
+    
+    /// A dummy property to force views to update when properties change
+    @Published
+    private var changeToggle = false
+    
+    var cancellables = Set<AnyCancellable>()
+    
+    init(content: Content) {
+        self.content = content
+        
+        observeChanges()
+    }
+    
+    // MARK: Change observation
+    
+    func didChange() {
+        DispatchQueue.main.async {
+            self.changeToggle.toggle()
+        }
+    }
+}