K-Day version 1.1.0

Bug Fixes

• Fixes Kday.nth_kday/3

Enhancements

• Adds Kday.day_of_week/1

Kday version 1.0.2

Bug Fixes

• Fix Kday.iso_days_to_day_of_week/1. Thanks to @puruzio for the report. Closes #2.