Update package to .NET 8 (from EOL'd 6) (#56)

Updates package version to 0.5.0.

Directory.Build.props

@@ -26,12 +26,12 @@
   <PropertyGroup>
 
     <!-- DOCSYNC: When changing version number update README.md -->
-    <Version>0.4.2</Version>
+    <Version>0.5.0</Version>
     <AssemblyVersion>0.9.9999.0</AssemblyVersion>
 
     <Company>Microsoft</Company>
     <Copyright>Copyright (c) Microsoft Corporation</Copyright>
-    <Description>.NET library that encapsulates OS and filesystem differences in the ability to create Copy-on-Write file links.</Description>
+    <Description>.NET library that implements Copy-on-Write file links for Windows Dev Drive and ReFS.</Description>
     <Product>Microsoft.CopyOnWrite</Product>
 
   </PropertyGroup>

README.md

@@ -45,6 +45,7 @@ File clones on Windows do not actually allocate space on-drive for the clone. Th
 
 [![NuGet version (CopyOnWrite)](https://img.shields.io/nuget/v/CopyOnWrite?style=plastic)](https://www.nuget.org/packages/CopyOnWrite)
 
+* 0.5.0 December 2024: Move package framework support from .NET 6 to .NET 8 after 6 reached end-of-life.
 * 0.4.2 November 2024: Loosened error handling getting volume information, any volume resulting in an error is ignored. This aids continued failures finding new unique error types based on al lthe various disk subsystems and drivers out there.
 * 0.4.1 October 2024: Add ERROR_DEV_NOT_EXIST handling on volume enumeration
 * 0.4.0 October 2024: Remove async versions of `CloneFile` as the implementation did not use overlapped I/O anyway. CoW support is releasing in the Server 2025 and Win11 24H2 wave, built into the `CopyFile` API suite and on by default for Dev Drive and ReFS, so overlapped I/O in this library will never be implemented. Resolves https://github.com/microsoft/CopyOnWrite/issues/50

lib/CopyOnWrite.csproj

@@ -2,7 +2,7 @@
 
   <PropertyGroup>
     <RootNamespace>Microsoft.CopyOnWrite</RootNamespace>
-    <TargetFrameworks>netstandard2.0;net6.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0;net8.0</TargetFrameworks>
 
     <DistribDir>$(DistribRoot)Package\</DistribDir>
 

lib/MaxCloneFileLinksExceededException.cs

@@ -3,7 +3,6 @@
 
 using System;
 using System.IO;
-using System.Runtime.Serialization;
 
 namespace Microsoft.CopyOnWrite;
 
@@ -40,14 +39,4 @@ public MaxCloneFileLinksExceededException(string message, Exception innerExcepti
         : base(message, innerException)
     {
     }
-
-    /// <summary>
-    /// Serialization constructor.
-    /// </summary>
-    /// <param name="info">The serialization info.</param>
-    /// <param name="context">The streaming context.</param>
-    private MaxCloneFileLinksExceededException(SerializationInfo info, StreamingContext context)
-        : base(info, context)
-    {
-    }
 }