0.57.0

Enhancements

• Improve performance of frame retrieval via DICOMfileClient by caching offsets in the database
• Further unify interfaces of DICOMfileClient and DICOMwebClient

Breaking changes

• Constructor of DICOMfileClient now accepts a URL with file scheme rather than a filesystem path
• Parameter base_dir of constructor of DICOMfileClient has been renamed to url
• Schema of SQLite database underlying DICOMfileClient has changed

Migration from version 0.56.2 or earlier

• Change DICOMfileClient(base_dir='/path/to/dir') to DICOMfileClient(url='file:///path/to/dir')
• Remove existing database files