square/objc-TimesSquare — pull request #26 by percysnoodle (2013-05-01 15:43:04+00:00)
Title: Use rangeOfUnit:inUnit:forDate: to determine the number of weeks in a month

This fixes issue #18 by using `-[NSCalendar rangeOfUnit:inUnit:forDate:]` to determine the number of weeks instead of examining the week number of particular weeks, which failed for UK dates (which can have a week number of 53)