function getMixedMonthObject(monthName, index) {
  return {
    name: monthName,
    days: WEEK_LENGTH,
    daysBeforeFullWeeks: 0,
    daysAfterFullWeeks: 0,
    fullWeeks: 1,
    index: index
  };
}
Generate a mixed month object.

@private
@param {String} monthName The month name.
@param {Number} index Index for the mixed month.
@returns {Object} The month object.