Cannot find file named 'things_val_test_set.txt'

[863689877]

Hi, file named 'things_val_test_set.txt' cannot be found in in core/datasets.py, which leads to failure when validate flyingthings3d dataset.
Please provide this file, and explain the source of that. Thanks.

[zacjiang]

I have added the file. It is just to select a subset of the TEST set in FlyingThings3D, where I select 1 in every 10 frames.