fix bool warning

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

@@ -56,7 +56,8 @@ namespace Tensorflow
             switch (nd.dtype.Name)
             {
                 case "Boolean":
-                    Marshal.Copy(nd1.Data<byte>(), 0, dotHandle, nd.size);
+                    var boolVals = Array.ConvertAll(nd1.Data<bool>(), x => Convert.ToByte(x));
+                    Marshal.Copy(boolVals, 0, dotHandle, nd.size);
                     break;
                 case "Int16":
                     Marshal.Copy(nd1.Data<short>(), 0, dotHandle, nd.size);