Instagram/IGListKit 5.1.0 on GitHub

Added methods to the IGListAdapterDelegate to include callback methods for any time a cell will appear or did disappear from the screen. This can be used in conjunction with the IGListAdapterDelegateAnnouncer to listen globally for cell lifecycle events. Any implementer of IGListAdapterDelegate must update to include these methods. Jesse Seidman (fa50aa1), (d1d6f9d), (03049f7)
Added willCrash delegate methods in order to capture incoming crashes in IGListKit for analysis. Any implementer of IGListAdapterUpdaterDelegate and/or IGListUpdatingDelegate must update to include these methods. Hoà V. DINH (da1050e)

Replaced CocoaPods with SPM as the new dependency manager of IGListKit.xcodeproj when running unit tests. Tim Oliver (2964f06)
Added handling for new collection view cell dequeue behavior in iOS 18 Maxime Ollivier (4bad7d52)
Added support for Swift Concurrency Mark Davis (0ec2d52)
Exposed an option to disable layout cache invalidation when new items are inserted Constantine Fry (700905e)
Exposed IGListCollectionViewLayoutInvalidationContext as a public interface (1560956)
Annotated main API classes with NS_SWIFT_UI_ACTOR in preparation of moving to Swift 6 Cory Wilhite (a28d835)
Added autoDeselectEnabled on IGListAdapter to free each section-controller from having to do this and avoid bugs Maxime Ollivier (fec6b0e)
Added associatedListAdapters as a property of UIViewController to track IGListAdapter instances bound to that view controller. Maxime Ollivier (9c0ef52)
Added assert when a section's diffIdentifier changed before an update starts, which could manifest in a few different crashes Maxime Ollivier (64ba471)
Added support for iOS 13 Context Menus with contextMenuConfigurationForItemAt method. Jérôme B. (23daf6d).

A crash that could periodically occur when collection view layout attributes were nil (6e91299)
A crash that could occur when reloading the same cell index multiple times Maxime Ollivier (0c25779)
A crash in IGListCollectionViewLayout that could occur if a nil indexPath value was provided (5ee2207)