Totokaelo/retail_calendar — pull request #1 by kitwalker12 (2014-05-08 18:07:01+00:00)
Title: Remove hard coded values and provide real methods

Provide real methods for calculating start of year and leap years.

Algorithm from [DateTime::Fiscal::Retail454](https://metacpan.org/source/BOFTX/DateTime-Fiscal-Retail454-0.02/lib/DateTime/Fiscal/Retail454.pm)