[code-quality] [ANN] Pyflakes 0.8 released

[Florent]

Hello,

Pyflakes 0.8 was released with some improvements.
It officially supports Python 3.4
https://launchpad.net/pyflakes/+milestone/0.8
https://pypi.python.org/pypi/pyflakes

In this version, the validation of the doctests is no longer active in
the default configuration.
The PYFLAKES_DOCTEST environment variable is used to activate them
(https://bugs.launchpad.net/bugs/1223150).

A new checker is added to catch return with arguments inside a
generator (Python <= 3.2).

The other changes are mostly bug fixes,

-- 
Florent