upgrade NumSharp.

src/TensorFlowNET.Core/TensorFlow.Binding.csproj

@@ -65,15 +65,11 @@ https://tensorflownet.readthedocs.io</Description>
 
   <ItemGroup>
     <PackageReference Include="Google.Protobuf" Version="3.11.4" />
-    <PackageReference Include="NumSharp.Lite" Version="0.1.4" />
+    <PackageReference Include="NumSharp.Lite" Version="0.1.7" />
     <PackageReference Include="Protobuf.Text" Version="0.4.0" />
   </ItemGroup>
 
   <ItemGroup>
     <Folder Include="Keras\Initializers\" />
   </ItemGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\..\..\NumSharp.Lite\NumSharp\NumSharp.Lite.csproj" />
-  </ItemGroup>
 </Project>

src/TensorFlowNET.Core/Tensors/Tensor.Value.cs

@@ -166,7 +166,7 @@ namespace Tensorflow
             switch(dtype)
             {
                 case TF_DataType.TF_STRING:
-                    return StringData()[0];
+                    return (NDArray)StringData()[0];
                 case TF_DataType.TF_INT32:
                     return *(int*)buffer;
                 default:

src/TensorFlowNet.Benchmarks/Tensorflow.Benchmark.csproj

@@ -20,7 +20,7 @@
   <ItemGroup>
     <PackageReference Include="BenchmarkDotNet" Version="0.12.0" />
     <PackageReference Include="SciSharp.TensorFlow.Redist" Version="1.15.1" />
-    <PackageReference Include="TensorFlow.NET" Version="0.15.0" />
+    <PackageReference Include="TensorFlow.NET" Version="0.15.1" />
   </ItemGroup>
 
 </Project>