first commit

ClassicAssist.Launcher/ValueConverters/InverseBooleanConverter.cs

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+using System;
+using System.Globalization;
+using System.Windows.Data;
+
+namespace ClassicAssist.Launcher.ValueConverters
+{
+    public class InverseBooleanConverter : IValueConverter
+    {
+        public object Convert( object value, Type targetType, object parameter, CultureInfo culture )
+        {
+            try
+            {
+                bool testValue = (bool) value;
+                return !testValue; // or do whatever you need with this boolean
+            }
+            catch
+            {
+                return true;
+            } // or false
+        }
+
+        public object ConvertBack( object value, Type targetType, object parameter, CultureInfo culture )
+        {
+            return Convert( value, targetType, parameter, culture );
+        }
+    }
+}