super_sliver_list

• Fix missing propagation of rect inside RenderViewportExt.getOffsetToRevealExt.
• Add missing constructors in SuperSliverList to have SliverList parity.

• BREAKING: Changed signature of ExtentEstimationProvider where the index is now nullable.
• Added layoutKeptAliveChildren argument to SuperSliverList.
• Improved performance with very large lists (millions of items).
• Bugfixes

• Fixed layout exception for shrink-wrapped lists.
• BREAKING: ExtentPrecalculationContext.viewportMainAxisExtent is now nullable

• Fixed exception when calling markAllDirty on empty list.

• Prevent overscroll when jumping and animating to items at the edge with alignment that would otherwise cause overscroll. For example jumping to the first item with alignment: 1.0 or jumping to the last item with alignment: 0.0 should no longer cause overscroll.

• Added visibleRange and unobstructedVisibleRange properties to ListController.
• Layout fixes.
• Renamed ExtentController to ListController.

• Introduced the concept of child obstruction extent. This is a property that can be set on Sliver geometry and allows for reliable positioning of items in slivers that are wrapped in a sticky header sliver.
• Added sticky headers to example.

This is a major update and a complete rewrite of SuperSliverList.

• Added SuperListView as a convenient drop-in replacement for ListView.
• Added ability to jump / animate to specific item using ExtentController.
• Added ability to asynchronously precompute item extents using ExtentPrecalculationPolicy.
• Comprehensive test coverage.

• Fixed problem when accessing layout offset from a LayoutBuilder child widget.

• Fix inserted children not being build properly.

• Bug fixes

• Bug fixes

• Bug fixes

• Various bug fixes and improvements

• Various bug fixes

• Initial release