AceTime 2.4.0 Date and time classes for Arduino that support timezones from the TZ Database.

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- fold : ace_time::extended::TransitionForSecondsTemplate< ZEB, ZPB, ZRB > , ace_time::FindResult
- format : ace_time::zoneinfohigh::ZoneEra< S > , ace_time::zoneinfolow::ZoneEra< S > , ace_time::zoneinfomid::ZoneEra< S >
- fragments : ace_time::zoneinfohigh::ZoneContext< S > , ace_time::zoneinfolow::ZoneContext< S > , ace_time::zoneinfomid::ZoneContext< S >
- fromYear : ace_time::zoneinfohigh::ZoneRule< S > , ace_time::zoneinfolow::ZoneRule< S > , ace_time::zoneinfomid::ZoneRule< S >