Merge pull request #39 from Pzixel/feature/CodeAnalysis220

Nuget update Microsoft.CodeAnalysis.CSharp to 2.2.0

Author: AArnott

src/CodeGeneration.Roslyn/CodeGeneration.Roslyn.csproj

@@ -16,7 +16,7 @@
 
   <ItemGroup>
     <PackageReference Include="System.Runtime.Loader" Version="4.3.0" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="1.3.2" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="2.2.0" />
     <PackageReference Include="Validation" Version="2.4.13" />
   </ItemGroup>