Make ViewModelBase and ViewLocator internal.

samples/ControlCatalog/ViewModels/MainWindowViewModel.cs

@@ -1,11 +1,10 @@
 using System.Reactive;
 using Avalonia.Controls.Notifications;
-using Avalonia.Diagnostics.ViewModels;
 using ReactiveUI;
 
 namespace ControlCatalog.ViewModels
 {
-    class MainWindowViewModel : ViewModelBase
+    class MainWindowViewModel : ReactiveObject
     {
         private IManagedNotificationManager _notificationManager;
 

src/Avalonia.Diagnostics/ViewLocator.cs

@@ -7,7 +7,7 @@ using Avalonia.Controls.Templates;
 
 namespace Avalonia.Diagnostics
 {
-    public class ViewLocator<TViewModel> : IDataTemplate
+    internal class ViewLocator<TViewModel> : IDataTemplate
     {
         public bool SupportsRecycling => false;
 

src/Avalonia.Diagnostics/ViewModels/ViewModelBase.cs

@@ -1,11 +1,14 @@
-using System.Collections.Generic;
+// Copyright (c) The Avalonia Project. All rights reserved.
+// Licensed under the MIT license. See licence.md file in the project root for full license information.
+
+using System.Collections.Generic;
 using System.ComponentModel;
 using System.Runtime.CompilerServices;
 using JetBrains.Annotations;
 
 namespace Avalonia.Diagnostics.ViewModels
 {
-    public class ViewModelBase : INotifyPropertyChanged
+    internal class ViewModelBase : INotifyPropertyChanged
     {
         public event PropertyChangedEventHandler PropertyChanged;