All notable changes to similar are documented here.
Fragile no longer boxes internally.Sticky and SemiSticky now require the use of stack tokens. For more information see #26Sticky now tries to drop entries from the thread local registry eagerly if it's dropped on the right thread.Note on safety: the Sticky and SemiSticky types allow data to live longer than the wrapper type which is why they are now requiring a 'static bound. Previously it was possible to create a sticky containing a bare reference which permitted unsafe access.
Sticky now requires 'static.slab feature for an internal optimization for Sticky to use a slab instead of a HashMap.Older releases were yanked due to the insufficient trait bound on Sticky.