The Holiday module uses the PEAR library for calculating holidays for web2project.
Additionally, it features a whitelist & blacklist for adding custom holidays
based on additional requirements, etc. The goal is to allow for more
advanced calculation of workhours and project dates, etc.
The original version of this module was developed by Vegard Fiksdal fiksdal@sensorlink.no of Sensorlink and acknowledged in license.txt