lib/src/DateUtils.js
function addMonths(d, n) {
  var newDate = clone(d);
  newDate.setMonth(d.getMonth() + n);
  return newDate;
}
function addMonths(d, n) {
  var newDate = clone(d);
  newDate.setMonth(d.getMonth() + n);
  return newDate;
}
function addMonths ( d , n ) { var newDate = clone ( d ) ; newDate . setMonth ( d . getMonth ( ) + n ) ; return newDate ; }
Return `d` as a new date with `n` months added.

@export
@param {[type]} d
@param {[type]} n
Return d as a new date with n months added .