* Add merge_aug_bboxes_3d unittest

* Add voxel_generator unittest

* Change test_merge_augs

* Add clean_data unittest

* Finish eval_class unittest

* Add kitti_eval unittest

* Add do_eval unittest

* Add gpu judgement for do_eval

* Change test_kitti_eval and test_voxel_generator

* Change to isclose

* Add unittests for bbox transform

* Add unittests for bbox transform

* Add unittests for bbox transform

* Add decode

* Add pred_split unittest

* Change allclose to eq

* Add ply convert

* Change example.

* Change shell to python.

* Add centerpoint_rpn and scn, change pillar encoder and voxel_encoder

* Move test_voxel_encoders.

* Change names, add docstring.

* Reconstruct centerpoint_rpn.

* Add centerpoint_rpn.

* Change SECONDFPN, delete centerpoint_fpn

* Remove SparseBasicBlock.

* Change SpMiddleResNetFHD to SparseEncoder.

* Finish SparseEncoder unittest.

* Change test_hard_simple_VFE.

* Change option, add legacy.

* Change docstring, change legacy.

* Fix legacy bug.

* Change unittest, change docstring.

* Change docstring.

* add multi backbone

* update multi backbone

* update multi backbone

* update multi backbone

* modify multi backbone

* modify multi_backbone params

* modify docstring

* update multi_backbone unittest

* modify docstring

* Add unittest.

* Change to 'defaults to'.

* Add replace=False, remove T op, add num_sweeps=10 unittest.

* Change lyft_infos.pkl.

* Add nus unittest.

* Add nus unittest.

* Change nus_info.pkl.

* Add test_mode.

* Fix minor bugs encountered when computing iou3d with gpu while the specified cuda id is not default 0

* Fix nonstandard formats

* Remove trailing whitespace

* Fix nonstandard format

* Fix ambiguous initialization of cuda tensors

…70)

* Fix a minor bug in json2csv of lyft dataset

* Fix variable names and minor hard code

* add primitive head

* register of primitive head

* modify primitive head

* modify primitive head

* modify primitive head

* modify primitive head

* update primitive head unittest

* modify primitive had

* fix bugs for primitive head

* update primitive head

* Add bottom2gravity and balance_class option.

* Add valid_flag.

* Add use_valid_flag.

* Change balance_class option.

* Add wrapper, remove gravity and balance_class option.

* Change flag, change load_infos to repeat_indices.

* Remove pdb, change docstring.

* Change name, remove unnecessary args.

* Remove _concat_dataset.

* Change name of ClassSampledDataset.

* Change docstring.

* Add get_cat_ids in nus_dataset, add unittest for wrapper.

* Change to len(self.dataset)

* Update nus data.

* add op fps with distance

* add op fps with distance

* modify F-DFS unittest

* modify sa module

* modify sa module

* SA Module support D-FPS and F-FPS

* modify sa module

* update points sa module

* modify point_sa_module

* modify point sa module

* reconstruct FPS

* reconstruct FPS

* modify docstring

* modify docstring

* add h3d head

* add h3d roi head

* update docstring of h3d roi head

* reconstruct h3d head

* remove unused code

* modify h3d bbox head

* add h3dnet init files

* modify h3d bbox head

* add depth_box3d unittest

* update h3d head

* add h3dnet benchmark

* update docstring in vote_head

* resovle primitive conflict