o Concurrent - Add delay() to postpone a future. - Rewrite timeout() to reduce the memory footprint of a future in the common case. Bug fixes ---------
Fixed the signature of ADT.CritBit.IntTree()->_values().
values(ADT.CritBit.IntTree()) claimed to return an array(int),
whereas IntTrees can hold any type as value.
o backtrace() Hide mutex keys and crypto contexts from backtraces. Having unexpected references to mutex keys may cause hangs and complaints about attempting to lock mutexes recursively. o combine_path() Fixed corner case where combine_path() on strings starting with