Version 2021.4

Upstream version 2021d released 2021-10-15T20:48:18+00:00

Briefly:

Fiji suspends DST for the 2021/2022 season. 'zic -r' marks unspecified
timestamps with "-00".

Changes to future timestamps

Fiji will suspend observance of DST for the 2021/2022 season. Assume for now
that it will return next year. (Thanks to Jashneel Kumar and P Chan.)