movable exempt_ptr: EllenBinTree
movable exempt_ptr: LazyList
movable exempt_ptr: MichaelList
movable exempt_ptr: intrusive::MichaelSet
movable exempt_ptr: MichaelSet/Map
movable exempt_ptr: SplitList
movable exempt_ptr: SkipList
add find(Q const&, Func), find_with(Q const&, Pred, Func) to all sets
fix doc