Fileconfig

-------------

Added config filename normalization.

Fixed names property with instances lacking aliases.

-----------

Added Python 3.3+ support.

Documented ``sys._getframe`` dependency.

-------------

Simplified inspection in ``caller_path``.

Fixed some typos.

-----------

Add custom encoding support.

Make available underlying stack attribute on ``Stacked``.

Add ``caller_steps`` parameter to add method of ``Stacked``.

-------------

Improved documentation.

-----------

Replaced ``Stack`` by refactored ``Stacked`` config.