Adding method to get the week number of a date
Added year, hour, minute methods
added a utc timestamp
fixed the utcTimestamp
Internationalizing stringDaysAgoAgainstMidnight: strings
Applies fixes for ARC from patch manually—could use some testing
Merge branch 'pullrequest' of https://github.com/SinnerSchraderMobileMirrors/nsdate-helper into SinnerSchraderMobileMirrors-pullrequest
Adapting merged pull request to use static _calendar
Merge branch 'SinnerSchraderMobileMirrors-pullrequest' into develop
Merge branch 'utcTimeStamp' of https://github.com/SinnerSchraderMobileMirrors/nsdate-helper into SinnerSchraderMobileMirrors-utcTimeStamp
Merge branch 'SinnerSchraderMobileMirrors-utcTimeStamp' into develop
DRYs up use of initializeStatics (use +sharedCalendar and +sharedDateFormatter instead of _calendar, etc)
Merge branch 'i18n' of https://github.com/hectr/nsdate-helper into hectr-i18n

Conflicts:
	NSDate+Helper.m
Merge branch 'hectr-i18n' into develop