Tracking issue for planned breaking changes:

[sosthene-nitrokey]

• Rework re-exports in lib.rs Implement DequeView on top of #486 #490 (comment)
• Rename Deque::storage_len to len: Implement DequeView on top of #486 #490 (comment)
• Remove the Storage generic on history_buf::OldestOrdered. The view version can become the version that is always used: Remove generic from history_buf::OldestOrdered #570
• Queue::capacity and Queue::storage_capacity should be changed
• spsc: The iterators, consumers and producers should be made to only have the View variants: De-monomorphize spsc consumer and producer #571
• SortedLinkLinst: Iter and FindMut should be made to only exist in the View version: SortedLinkedList: Keep only the view versions of Iter and FindMut #540
• Vec: rename storage_capacity to capacity and remove the const version Vec: rename storage_capacity to capacity and remove the const version #538
• SortedLinkedList removing unit error type: SortedLinkedList::pop: change return type to match std::vec::pop #532
• Vec and String removing unit error type: Remove allow(clippy::result_unit_err) #533

[sgued]

This can be closed as everything is done and will be included in 0.9.1.