Merge branch 'common/dataset-cleaning' into 'master'

.gitattributes

common/polystar/common/models/image.py

common/polystar/common/utils/git.py

common/research/common/dataset/cleaning/__init__.py

common/research/common/dataset/cleaning/dataset_changes.py

...n/research/common/dataset/cleaning/dataset_cleaner_app.py

common/research/common/datasets/dataset_builder.py

common/research/common/datasets/image_dataset.py

...on/research/common/datasets/image_file_dataset_builder.py

common/research/common/datasets/slice_dataset.py

dataset/dji_roco/.gitignore

dataset/dji_roco/robomaster_Final Tournament/digits/.changes

...bomaster_North China Regional Competition/digits/.changes

dataset/dji_roco_zoomed_v2/.gitignore

dataset/twitch/v1/.gitignore

dataset/twitch/v1/470149568/digits/.changes

dataset/twitch/v1/470150052/digits/.changes

dataset/twitch/v1/470151286/digits/.changes

dataset/twitch/v1/470152289/digits/.changes

dataset/twitch/v1/470152730/digits/.changes