time toolkit for golang

 Package now is a time toolkit for golang.
 .
   time.Now() // 2013-11-18 17:51:49.123456789 Mon
 .
   BeginningOfMinute() // 2013-11-18 17:51:00 Mon
   BeginningOfHour() // 2013-11-18 17:00:00 Mon
   BeginningOfDay() // 2013-11-18 00:00:00 Mon
   BeginningOfWeek() // 2013-11-17 00:00:00 Sun
 .
   FirstDayMonday = true // Set Monday as first day
   BeginningOfWeek() // 2013-11-18 00:00:00 Mon
   BeginningOfMonth() // 2013-11-01 00:00:00 Fri
   BeginningOfQuarter() // 2013-10-01 00:00:00 Tue
   BeginningOfYear() // 2013-01-01 00:00:00 Tue
 .
   EndOfMinute() // 2013-11-18 17:51:59.999999999 Mon
   EndOfHour() // 2013-11-18 17:59:59.999999999 Mon
   EndOfDay() // 2013-11-18 23:59:59.999999999 Mon
   EndOfWeek() // 2013-11-23 23:59:59.999999999 Sat
 .
   FirstDayMonday = true // Set Monday as first day
   EndOfWeek() // 2013-11-24 23:59:59.999999999 Sun
   EndOfMonth() // 2013-11-30 23:59:59.999999999 Sat
   EndOfQuarter() // 2013-12-31 23:59:59.999999999 Tue
   EndOfYear() // 2013-12-31 23:59:59.999999999 Tue
 .
   // Use another time
   t := time.Date(2013, 02, 18, 17, 51, 49, 123456789, time.UTC)
   New(t).EndOfMonth() // 2013-02-28 23:59:59.999999999 Thu
 .
   Monday() // 2013-11-18 00:00:00 Mon
   Sunday() // 2013-11-24 00:00:00 Sun
   EndOfSunday() // 2013-11-24 23:59:59.999999999 Sun
 .
 This package contains the source.