message: Add 1.13 and 2.0 compiler selection
diff: @@ -15,6 +15,7 @@ limitations under the License.
  #include "tensorflow/core/framework/resource_mgr.h"
  #include "tensorflow/core/framework/resource_op_kernel.h"
  +#include "tensorflow/core/public/version.h"
  #include "kernels/sequence_ops.h"
  #include <deque>
  @@ -58,7 +59,11 @@ class TextOutputSequence : public OutputSequence {
  }
  return Status::OK();
  }
  +#if TF_MAJOR_VERSION==1&&TF_MINOR_VERSION==13
  + virtual string DebugString() {
  +#else
  virtual string DebugString() const {
  +#endif
  return strings::StrCat("TextOutputSequence[]");
  }
  private:
  