- Added XCom for cross‑task communication, Alembic DB migration support, and flexible dependency trigger rules.
- Introduced environment‑variable connections, per‑user DAG visibility UI, SQL‑chain operator support, and encrypted metadata passwords.
- Enhanced task instance logging, plus numerous bug fixes and test coverage improvements.
1.5.0
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Updated XCom handling for pandas 3, now storing the class name; all components must be upgraded or DataFrames from pandas 3 become unreadable.