TODO

* Combine the test suite into a single executable and then do:
    $> darcs setpref test "runhaskell Tests.hs"

* Also, tell Setup.hs so that `cabal test` and `runhaskell Setup.hs
  test` call the test suite.

* Try to get the newest/final version of this package folded into "stm".

* Possibly incorporate more things from http://hackage.haskell.org/package/bounded-tchan

    For example, On 4/3/11 11:58 PM, Thomas DuBuisson wrote:
    > 3) Implement a "sizeOfTBChan". This would require an extra
    > word to store the max size in addition to the counter (vs
    > what you have of a single counter counting down from the
    > maximum toward zero), but the use of {-# UNPACK #-} should
    > keep it to a single extra word.
    

-- <http://hackage.haskell.org/trac/ghc/ticket/5104>
-- <http://www.haskell.org/pipermail/cvs-libraries/2011-April/012914.html>