Skip copying when output binary is unchanged

Author: am11

LibSass.NET.Tests/LibSass.NET.Tests.csproj

@@ -118,6 +118,7 @@
   <Target Name="AfterBuild">
     <Copy
       SourceFiles="$(LibSassPath)libsass32.dll;$(LibSassPath)libsass64.dll"
-      DestinationFolder="$(OutputPath)" />
+      DestinationFolder="$(OutputPath)"
+      SkipUnchangedFiles="true" />
   </Target>
 </Project>

contrib/LibSass.NET.Console/LibSass.NET.Console.csproj

@@ -52,6 +52,7 @@
   <Target Name="AfterBuild">
     <Copy
       SourceFiles="$(LibSassPath)libsass32.dll;$(LibSassPath)libsass64.dll"
-      DestinationFolder="$(OutputPath)" />
+      DestinationFolder="$(OutputPath)"
+      SkipUnchangedFiles="true" />
   </Target>
 </Project>

contrib/LibSass.NET.Web/LibSass.NET.Web.csproj

@@ -59,6 +59,7 @@
   <Target Name="AfterBuild">
     <Copy
       SourceFiles="$(LibSassPath)libsass32.dll;$(LibSassPath)libsass64.dll"
-      DestinationFolder="$(OutputPath)" />
+      DestinationFolder="$(OutputPath)"
+      SkipUnchangedFiles="true" />
   </Target>
 </Project>