Standard Telnetlib Redistribution

standard-telnetlib is a redistribution of the `telnetlib` module, which was part of the Python standard library until its removal in Python 3.13 (deprecated in 3.11). It serves as a 'dead battery' backport, providing the original `telnetlib` functionality for projects that require it in Python versions where it's no longer built-in. This library allows developers to continue using the `telnetlib` client functionality without needing to pin older Python versions. The latest version is 3.13.0, released to coincide with Python 3.13's removal of the module.