Class for random day generation

Changes for 0.14 - 2024-03-16T14:13:15+01:00

• Add missing random_day_year() method.
• Add tests to coverage of Random::Day::get().
• Fix error message in doc.
• Improve constructor doc.
• Regen README file.
• Update Module::Install to 1.21 version.
• Update copyright years.