Added

• Support of spatial 2D for ViTAutoEnc
• Support of dataframe object input in CSVDataset
• Support of tensor backend for Orientation
• Support of configurable delimiter for CSV writers
• A base workflow API
• DataFunc API for dataset-level preprocessing
• write_scalar API for logging with additional engine parameter in TensorBoardHandler
• Enhancements for NVTX Range transform logging
• Enhancements for set_determinism
• Performance enhancements in the cache-based datasets
• Configurable metadata keys for monai.data.DatasetSummary
• Flexible kwargs for WSIReader
• Logging for the learning rate schedule handler
• GridPatchDataset as subclass of monai.data.IterableDataset
• is_onehot option in KeepLargestConnectedComponent
• channel_dim in the image readers and support of stacking images with channels
• Support of matshow3d with given channel_dim
• Skipping workflow run if epoch length is 0
• Enhanced CacheDataset to avoid duplicated cache items
• save_state utility function

Changed

• Optionally depend on PyTorch-Ignite v0.4.8 instead of v0.4.6
• monai.apps.mmars.load_from_mmar defaults to the latest version

Fixed

• Issue when caching large items with pickle
• Issue of hard-coded activation functions in ResBlock
• Issue of create_file_name assuming local disk file creation
• Issue of WSIReader when the backend is TiffFile
• Issue of deprecated_args when the function signature contains kwargs
• Issue of channel_wise computations for the intensity-based transforms
• Issue of inverting OneOf
• Issue of removing temporary caching file for the persistent dataset
• Error messages when reader backend is not available
• Output type casting issue in ScaleIntensityRangePercentiles
• Various docstring typos and broken URLs
• mode in the evaluator engine
• Ordering of Orientation and Spacing in monai.apps.deepgrow.dataset

Removed

• Additional deep supervision modules in DynUnet
• Deprecated reduction argument for ContrastiveLoss
• Decollate warning in Workflow
• Unique label exception in ROCAUCMetric
• Logger configuration logic in the event handlers