logging updates

[leifj]

While working on the pyFF refactor it became clear that logging should improve a bit. A simple low-hanging fruit is to enable project-local loggers so you can filter logs. This doesn't affect anyone not using a config-driven log setup but enables stuff like pyramids to work better. I also locked down idna because httplib2 blows up otherwize for py2 - we can drop this later when we drop py2 compat.

All Submissions:

• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Have you added an explanation of what problem you are trying to solve with this PR?
• Have you added information on what your changes do and why you chose this as your solution?
• Have you written new tests for your changes?
• Does your submission pass tests?
• This project follows PEP8 style guide. Have you run your code against the 'flake8' linter?

[coveralls]

Coverage increased (+0.02%) to 73.201% when pulling 52aa6da on leifj:master into d724f8d on IdentityPython:master.

[c00kiemon5ter]

The convention is to use

logger = logging.getLogger(__name__)

__name__ is the module’s name in the Python package namespace.

Either way, I think it's fine.

[johanlundberg]

I would also be happier if __name__ was used instead of explicit logger name and if the variable named log was renamed to logger, but no real objections.