Log Message:
Update to 3.3.0

Upstream changes:
3.3.0 -- 2017-02-06
You can view the 3.3.0 milestone on GitLab for more details.

Add support for Python 3.6 (via dependencies). Note Flake8 does not
guarantee that all plugins will support Python 3.6.
Added unique error codes for all missing PyFlakes messages. (14 new
codes, see "Error / Violation Codes")
Dramatically improve the performance of Flake8. (See also GitLab!156)
Display the local file path instead of the temporary file path when
using the git hook. (See also GitLab#244)
Add methods to Report class that will be called when Flake8 starts and
finishes processing a file. (See also GitLab#251)
Fix problem where hooks should only check *.py files. (See also
GitLab#268)
Fix handling of SyntaxErrors that do not include physical line information.
(See also GitLab#279)
Update upper bound on PyFlakes to allow for PyFlakes 1.5.0.  (See also
GitLab#290)
Update setuptools integration to less eagerly deduplicate packages.
(See also GitLab#295)
Force flake8 --version to be repeatable between invocations. (See also
GitLab#297)