- 2074 Implement moment.fn.utcOffset, deprecate momen.fn.zone
- 2088 add moment.fn.isBetween
- 2054 Call updateOffset when creating moment (needed for default timezone in moment-timezone)
- 1893 Add moment.isDate method
- 1825 Implement toJSON function on Duration
- 1809 Allowing moment.set() to accept a hash of units
- 2128 Add firstDayOfWeek, firstDayOfYear locale getters
- 2131 Add quarter diff support
- 2117 Add globalScope hack to more reliably distinguish Node vs browser
- 2111 Create valid duration object when null is passed to moment.duration()
- 2133 Reimplement month diff logic