update to package reference

Wox.Plugin/BaseModel.cs

@@ -1,11 +1,9 @@
 using System.ComponentModel;
 using System.Runtime.CompilerServices;
 using JetBrains.Annotations;
-using PropertyChanged;
 
 namespace Wox.Plugin
 {
-    [ImplementPropertyChanged]
     public class BaseModel : INotifyPropertyChanged
     {
         public event PropertyChangedEventHandler PropertyChanged;