Edit

ref #9071 use new partial formatting also in ExtendedTimePeriodPartialFormatter

ref #9071, ref #6276 fix order of TimePeriodFormatting to DD MMM YYYY (cont.)

ref #9071 remove ExtendedTimePeriodPartialFormatter which is no longer needed

• ExtendedTimePeriod.toString() should be enough

ref #9071, ref #6276 improve TimePeriod parsing for periods with shared year or month and some other

ref #9071 create TimePeriodFormatter and ExtendedTimePeriodFormatter and move toString methods

ref #9071 add formatter in ExtendedTimePeriod.toString

ref #9071 use ExtendedTimePeriodFormatter in DescriptionHelper and improve formatting for CategoricalData

ref #9071 improve with-month-name period parsing

ref #9071 add test for equal months to ExtendedTimePeriodFormatterTest