Version 0.4.1

Fix a double-free bug in MsQueue and SegQueue.

Version 0.4

Switch to the new implementation of epoch-based reclamation in crossbeam-epoch, fixing numerous bugs in the old implementation. Its API is changed in a backward-incompatible way.
Switch to the new implementation of CachePadded and scoped thread in crossbeam-utils. The scoped thread API is changed in a backward-incompatible way.
Switch to the new implementation of Chase-Lev deque in crossbeam-deque. Its API is changed in a backward-incompatible way.
Export channel implemented in crossbeam-channel.
Remove AtomicOption.
Implement Default and From traits.

Version 0.3

Introduced ScopedThreadBuilder with the ability to name threads and set stack size
Worker methods in the Chase-Lev deque don't require mutable access anymore
Fixed a bug when unblocking pop() in MsQueue
Implemented Drop for MsQueue, SegQueue, and TreiberStack
Implemented Default for TreiberStack
Added is_empty to SegQueue
Renamed mem::epoch to epoch
Other bug fixes

Version 0.2

Changed existing non-blocking pop methods to try_pop
Added blocking pop support to Michael-Scott queue
Added Chase-Lev work-stealing deque

Version 0.1

Added epoch-based memory management
Added Michael-Scott queue
Added Segmented array queue