Merge PR #282, Add SourceLink dev-dep and include PDB in nupkg

Author: piksel

src/ICSharpCode.SharpZipLib/ICSharpCode.SharpZipLib.csproj

@@ -5,6 +5,7 @@
     <SignAssembly>True</SignAssembly>
     <AssemblyOriginatorKeyFile>ICSharpCode.SharpZipLib.snk</AssemblyOriginatorKeyFile>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
+		<AllowedOutputExtensionsInPackageBuildOutputFolder>$(AllowedOutputExtensionsInPackageBuildOutputFolder);.pdb</AllowedOutputExtensionsInPackageBuildOutputFolder>
   </PropertyGroup>
 
   <!-- Nuget specific tags -->
@@ -45,4 +46,8 @@ Please see https://github.com/icsharpcode/SharpZipLib/wiki/Release-1.0 for more
     <DocumentationFile>bin\Release\net45\ICSharpCode.SharpZipLib.xml</DocumentationFile>
   </PropertyGroup>
 
+	<ItemGroup>
+		<PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0-beta-63127-02" PrivateAssets="All"/>
+	</ItemGroup>
+
 </Project>