[TIP] [ANN] Coverage v3.7

[Ned Batchelder]

The latest version of coverage.py is now available: 
https://pypi.python.org/pypi/coverage/3.7

Version 3.7 fixes a dozen bugs and adds more support for debugging 
problems in tracing files and subprocesses.  Details of the changes are 
at http://nedbatchelder.com/code/coverage/changes.html#changes-37

My plan is for this to be the last of the 3.x series, and for 4.x to 
only support >=2.6 and >=3.2.

Let me know if you have any problems.

--Ned.