thread-tree 0.3.3

A tree-structured thread pool for splitting jobs hierarchically on worker threads. The tree structure means that there is no contention between workers when delivering jobs.
Documentation 
Version 0.3.3
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- Remove dead code, including unused feature `unstable-thread-sea`

Version 0.3.2
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- Add missing inlines to a few trivial methods (affects .top())

Version 0.3.1
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- `.join(a, b)` now allows both jobs a, b to panic and panics are propagated to
  the caller.
- Updated job completion flag to use release and acquire orderings.

Version 0.3.0
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- Cleanup of the public api for ThreadTree (removing unused methods), and use
  Box instead of Arc
- Add experimental convenience methods join3l, join3r, join4

Version 0.2.0
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First crates.io version.

New features
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- ThreadTree, the tree-structured thread pool by [@bluss]