2.5.1

2.5.1 - 2026-03-21

✨ New Features

• None in this release.

🔧 Improvements

• Timeline API documentation: Clarified Timeline.insertingClipWithRipple behavior to explicitly state that clips overlapping the insertion point but starting before it are not shifted.
• Timeline test coverage clarity: TimelineManipulationTests now includes explicit availability context for @available(macOS 12.0, *) and stronger comments describing ripple and lane-selection semantics.

🐛 Bug Fixes

• Deterministic lane-selection assertions: Updated TimelineManipulationTests to assert exact lane outcomes for outward lane search and multi-conflict auto-lane placement, preventing ambiguous assertions from masking behavior changes.
• Timestamp test stability: Reworked testTimelineTimestampsInitialization to use fixed injected timestamps instead of real-time clock comparisons, removing race-prone timing assertions.