Robust and effective logging for Python 2 and 3.

- Easy logging to console and/or (rotating) file.
- Provides a fully configured standard Python logger object.
- Pretty formatting, including level-specific colors in the console.
- Windows color output supported by colorama
- Robust against str/bytes encoding problems, works with all kinds of
  character encodings and special characters.
- Multiple loggers can write to the same logfile (also across multiple
  Python files).
- Global default logger with logzero.logger and custom loggers with
  logzero.setup_logger(..).
- Compatible with Python 2 and 3.
- All contained in a single file.
- Licensed under the MIT license.
- Heavily inspired by the Tornado web framework.