Needs more settings

Great idea, very useful for company which are planning everything based on week number like mine.
there are several way to compute the week number based mostly on wether sunday is first or last day of the week and when the first week of the year starts (typically first week with four days in the year). This app needs to enable selecting those options to be useful. As is I am not sure if the week number is going to be reliably the same used by my company.

benwulf about Week