Issue to track the implementation of flake8-logging rules.

• LOG001 use logging.getLogger() to instantiate loggers
• LOG002 use __name__ with getLogger()
• LOG003 extra key '<key>' clashes with LogRecord attribute / Covered by G101
• LOG004 avoid exception() outside of exception handlers
• LOG005 use exception() within an exception handler / Covered by TRY400
• LOG006 redundant exc_info argument for exception() / Covered by G202
• LOG007 use error() instead of exception() with exc_info=False
• LOG008 warn() is deprecated, use warning() instead / Covered by G010
• LOG009 WARN is undocumented, use WARNING instead
• LOG010 exception() does not take an exception
• LOG011 avoid pre-formatting log messages / Covered by G004, G003, G002, G001
• LOG012 formatting error: <n> <style> placeholders but <m> arguments
• LOG013 formatting error: <missing/unreferenced> keys: <keys>
• LOG014 avoid exc_info=True outside of exception handlers
• LOG015 avoid logging calls on the root logger