Update to CG.R 0.4.88

Author: AArnott

src/Directory.Build.targets

@@ -1,12 +1,12 @@
 <Project>
   <PropertyGroup>
-    <CodeGenerationRoslynVersion>0.4.74</CodeGenerationRoslynVersion>
+    <CodeGenerationRoslynVersion>0.4.88</CodeGenerationRoslynVersion>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Update="CodeGeneration.Roslyn.Attributes" Version="$(CodeGenerationRoslynVersion)" />
     <PackageReference Update="CodeGeneration.Roslyn" Version="$(CodeGenerationRoslynVersion)" />
     <PackageReference Update="CodeGeneration.Roslyn.BuildTime" Version="$(CodeGenerationRoslynVersion)" />
-    <PackageReference Update="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="2.2.0" />
+    <PackageReference Update="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="2.9.0" />
     <PackageReference Update="System.Collections.Immutable" Version="1.4.0" />
     <PackageReference Update="Validation" Version="2.4.18" />
     <PackageReference Update="Microsoft.Build" Version="14.3.0" />

src/ImmutableObjectGraph.Generation.Tests/CodeGenTests.cs

@@ -13,7 +13,6 @@
     using Microsoft.CodeAnalysis;
     using Microsoft.CodeAnalysis.CSharp;
     using Microsoft.CodeAnalysis.Diagnostics;
-    using Microsoft.CodeAnalysis.MSBuild;
     using Microsoft.CodeAnalysis.Text;
     using Validation;
     using Xunit;

src/NuGet.Config

@@ -7,6 +7,5 @@
     <clear />
     <add key="api.nuget.org" value="https://api.nuget.org/v3/index.json" protocolVersion="3" />
     <add key="myget.org/F/aarnott" value="https://www.myget.org/F/aarnott/api/v3/index.json" protocolVersion="3" />
-    <add key="local" value="d:\nugetpkgsrc\" />
   </packageSources>
 </configuration>

src/RoslynDemo/RoslynDemo.csproj

@@ -2,6 +2,7 @@
   <PropertyGroup>
     <TargetFramework>net461</TargetFramework>
     <OutputType>Exe</OutputType>
+    <IsPackable>false</IsPackable>
   </PropertyGroup>
   <ItemGroup>
     <Compile Update="Fruit.cs">
@@ -24,4 +25,4 @@
     <ProjectReference Include="..\ImmutableObjectGraph.Generation\ImmutableObjectGraph.Generation.csproj" />
     <ProjectReference Include="..\ImmutableObjectGraph\ImmutableObjectGraph.csproj" />
   </ItemGroup>
-</Project>
+</Project>