Standard Library SunAU Redistribution

The `standard-sunau` library is a redistribution of the `sunau` module, which was formerly part of the Python standard library. It provides an interface for reading and writing Sun AU audio files (`.au` format). The original `sunau` module was deprecated in Python 3.11 and completely removed in Python 3.13 as part of PEP 594. This package allows legacy projects or those needing Sun AU file support to continue using the module by installing it as a PyPI dependency. It is currently at version 3.13.0 and is part of the 'dead battery' project, focused on redistributing removed standard library modules with minimal maintenance.