Update requirements.txt, examples/source_pretrain.py, examples/test_model.py, examples/train_P2LR_kmeans.py, P2LR/init.py, P2LR/dist_metric.py, P2LR/evaluators.py, P2LR/trainers.py, P2LR/datasets/caviara.py, P2LR/datasets/init.py, P2LR/datasets/custom.py, P2LR/datasets/dukemtmc.py, P2LR/datasets/lpw.py, P2LR/datasets/merge.py, P2LR/datasets/market1501.py, P2LR/datasets/msmt17.py, P2LR/datasets/noisyshoppingmall.py, P2LR/datasets/prai.py, P2LR/datasets/unlabel.py, P2LR/datasets/unlabel_wcam.py, P2LR/evaluation_metrics/init.py, P2LR/evaluation_metrics/classification.py, P2LR/evaluation_metrics/ranking_bk.py, P2LR/evaluation_metrics/ranking.py, P2LR/loss/init.py, P2LR/loss/crossentropy.py, P2LR/loss/triplet.py, P2LR/feature_extraction/init.py, P2LR/feature_extraction/cnn.py, P2LR/feature_extraction/database.py, P2LR/metric_learning/init.py, P2LR/metric_learning/euclidean.py, P2LR/metric_learning/kissme.py, P2LR/metric_learning/distance.py, P2LR/models/init.py, P2LR/models/resnet.py, P2LR/models/resnet_ibn.py, P2LR/models/resnet_ibn_a.py, P2LR/utils/init.py, P2LR/utils/meters.py, P2LR/utils/osutils.py, P2LR/utils/k_means.py, P2LR/utils/logging.py, P2LR/utils/lr_scheduler.py, P2LR/utils/rerank.py, P2LR/utils/serialization.py, P2LR/utils/data/init.py, P2LR/utils/data/base_dataset.py, P2LR/utils/data/preprocessor.py, P2LR/utils/data/sampler.py, P2LR/utils/data/transforms.py, README.md files