sliver_expansion 0.2.1

Sliver expansion primitives for Flutter (SliverExpansible + SliverExpansionTile).

0.2.1

• Fix: scroll offset corrections requested by a lazy body sliver (e.g. SliverList re-estimating its extent) are now propagated to the viewport instead of being swallowed, preventing scroll position corruption.
• Fix: SliverExpansionTile no longer leaks a CurvedAnimation on every rebuild when using eager children.
• Fix: changing SliverExpansible.bodyRevealMode on an existing widget now correctly creates/disposes the internal reveal animation.
• Improvement: when fully expanded, the body sliver geometry is passed through unchanged (preserves maxPaintExtent, paintOrigin, hasVisualOverflow, and avoids a redundant second layout and clip per frame).
• Improvement: Android semantics parity with ExpansionTile — the live region announcing expansion state changes is excluded from accessibility focus traversal (AccessibilityFocusBlockType.blockNode).

0.2.0

• Fix Gif demo url not show in pub.dev

0.1.0

• Initial release.
• Add SliverExpansible + SliverExpansibleController (expand/collapse a body sliver with animation).
• Add SliverExpansionTile (Material-style sliver expansion tile with optional pinned header and lazy children).