dateE library Null safety

Extensions

DateTime_E
DAY d ABBR_WEEKDAY E WEEKDAY EEEE ABBR_STANDALONE_MONTH LLL STANDALONE_MONTH LLLL NUM_MONTH M NUM_MONTH_DAY Md NUM_MONTH_WEEKDAY_DAY MEd ABBR_MONTH MMM ABBR_MONTH_DAY MMMd ABBR_MONTH_WEEKDAY_DAY MMMEd MONTH MMMM MONTH_DAY MMMMd MONTH_WEEKDAY_DAY MMMMEEEEd ABBR_QUARTER QQQ QUARTER QQQQ YEAR y YEAR_NUM_MONTH yM YEAR_NUM_MONTH_DAY yMd YEAR_NUM_MONTH_WEEKDAY_DAY yMEd YEAR_ABBR_MONTH yMMM YEAR_ABBR_MONTH_DAY yMMMd YEAR_ABBR_MONTH_WEEKDAY_DAY yMMMEd YEAR_MONTH yMMMM YEAR_MONTH_DAY yMMMMd YEAR_MONTH_WEEKDAY_DAY yMMMMEEEEd YEAR_ABBR_QUARTER yQQQ YEAR_QUARTER yQQQQ HOUR24 H HOUR24_MINUTE Hm HOUR24_MINUTE_SECOND Hms HOUR j HOUR_MINUTE jm HOUR_MINUTE_SECOND jms HOUR_MINUTE_GENERIC_TZ jmv HOUR_MINUTE_TZ jmz HOUR_GENERIC_TZ jv HOUR_TZ jz MINUTE m MINUTE_SECOND ms SECOND s