Style fixes

doc/conf.py

doc/data/second_config.py

doc/example_alias.py

doc/example_cli.py

doc/example_defaults.py

doc/example_logging.py

expose/click.py

expose/config.py

expose/logging.py

expose/rc.py

setup.py

tests/conftest.py

tests/data/second_config.py

tests/test_click.py

tests/test_config.py

tests/test_logging.py

tests/test_rc.py