ISO Week Objects

The `isoweek` module provides the `Week` class, which represents specific weeks spanning Monday to Sunday, adhering to the ISO 8601 week definition. It correctly handles the 52 or 53 numbered weeks in a year, where Week 1 is the first week with four or more days in January. The library is lightweight and immutable, offering an interface similar to `datetime.date` objects. The current version is 1.3.3, and the project appears to be in maintenance mode with infrequent updates, with its last PyPI release in 2017 and GitHub activity noted as 5 years ago.