v0.21.2

Added

• Added synchronization group mechanism to align multiple data sources based on selected columns. It can be accessed with pw.io.register_input_synchronization_group.
• pw.io.register_input_synchronization_group now supports the following types of columns: pw.DateTimeUtc, pw.DateTimeNaive, pw.DateTimeDuration, and int.

Changed

• Enhanced error reporting for runtime errors across most operators, providing a trace that simplifies identifying the root cause.

Fixed

• Bugfix for problem with list_documents() when no documents present in store.
• The append-only property of tables created by pw.io.kafka.read is now set correctly.