message: Supports float16 data type for TfLite<->PyType lookup.
  The lookup existed in TfLite->PyType direction, but seems missing from the other way.
diff: @@ -65,6 +65,8 @@ TfLiteType TfLiteTypeFromPyType(int py_type) {
  switch (py_type) {
  case NPY_FLOAT32:
  return kTfLiteFloat32;
  + case NPY_FLOAT16:
  + return kTfLiteFloat16;
  case NPY_INT32:
  return kTfLiteInt32;
  case NPY_INT16:
  