- Rebase to tzdata-2021a
  - South Sudan will change from +03 to +02 on 2021-02-01.

- Rebase to tzdata-2020f including changes for tzdata-2020e
  - tzdata-2020f fixes a bug in tzdata-2020e that caused an
    invalid zi file in rearguard format
  - Volgograd changes time zone from UTC+04 to UTC+03 on 2020-12-27.
  - Australia/Currie is identical to Australia/Hobart for all
    timestamps since 1970 and was therefore created by mistake,
    now moved to the "backward" file.

- Update release and rebuild.

- Include the upstream patch to support pacificnew for java tzupdater.
- Set POSIXRULES macro to continue installing posixrules file.

- Rebase to tzdata-2020a
  - Morocco will spring forward on 2020-05-31 rather than
    previously predicted 2020-05-24.
  - Canada's Yukon region changed to year round UTC -07
    effective 2020-03-08.
  - America/Godthab was renamed to America/Nuuk.

- Rebase to tzdata-2019c
  - Fiji will observe DST from 2019-11-10 to 2020-01-12.
  - Norfolk Island will begin observing Australian-style DST on 2019-10-06.

- Rebase to tzdata-2019b
  - Brazil will no longer observe DST going forward.
  - The 2019 spring transition for Palestine occurred 03-29, not 03-30.

- Rebase to tzdata-2019a
  - Palestine will start DST on 2019-03-30, rather than 2019-03-23 as
    previously predicted.
  - Metlakatla rejoined Alaska time on 2019-01-20, ending its observances
    of Pacific standard time.

- Rebase to tzdata-2018i (includes changes from tzdata-2018h)
  - São Tomé and Príncipe changed from UTC+01 to UTC+00 on 2019-01-01.
  - Qyzylorda, Kazakhstan changed from UTC+06 to UTC+05 on 2018-12-21.
  - Created a new zone Asia/Qostanay since Qostanay, Kazakhstan didn't 
    transition with the Qyzylorda change.
  - Metlakatla, Alaska will observe PST for this winter only.
  - Predict that Morocco will continue to adjust clocks around Ramadan.
  - Also include predictions for Iran from 2038 through 2090.

- Rebase to tzdata-2018g
  - Morocco will remain at UTC+1 rather than switching back to UTC+0 as
    planned.  This change is effective Octobober 28, 2018.

- Bump release and rebuild for target.

- Update the tzdata2018e.tar.gz file. Make the tzdata.zi file during prep.

- Rebase to tzdata-2018d
  - DST for Asia/Gaza and Asia/Hebron has changed from March 31 to March 24.
  - Antarctica/Casey station changed to UTC+8 on March 11.

- Rebase to tzdata-2018c
  - Revert the Irish time changes that relied on negative DST offsets.

- Rebase to tzdata-2017c.
  - Northern Cyprus will revert to using EQ rules on October 29, 2017.
  - Sudan will switch from +03 to +02 on November 1, 2017.
  - Tonga will not change it's clocks on Novemeber 5, 2017 ending it's
    experiment with DST.
  - Fiji DST will end on January 14, 2018 rather than January 21, 2018.
  - Namibia - starting September 3, 2017 switches from +)1 with DST to
    +02 all year.  This change takes effect April 1, 2018.
  - Turks & Caicos changes from -04 all year to -05 with US DST starting
    on March 11, 2018.  Effective change date is November 4, 2018. 
  - tzdata now includes two text versions of the time zone data - tzdata.zi
    and leapseconds. 
  - Includes two patches to deal with build issues.

- Rebase to tzdata-2017b.
  - Haiti resumed DST on March 12, 2017.

- Rebase to tzdata-2017a.
  - Mongolia no longer observes DST. (BZ #1425214)
  - Add upstream patch to fix over-runing of POSIX limit on zone abbreviations.
- Add zone1970.tab file to the install list. (BZ #1414829)

- Rebase to tzdata-2016ij
  - Saratov region of Russia is moving from +03 offset to +04 offset
    on 2016-12-04.

- Rebase to tzdata-2016i:
  - Cyprus is now split into two time zones as of 2016-10-30
  - Tonga will reintroduce DST on 2016-11-06

- Rebase to tzdata-2016h:
  - Palestine will end DST on 2016-10-29 not 2016-10-21.

- Rebase to tzdata-2016g.
  - Turkey changed from EET/EEST (+02/+03) to permanent +03,
    on 2016-09-07.
  - A new leap second will be added on 2016-12-31 23:59:60 UTC.

- Rebase to 2016d 
  - America/Caracas switches from -0430 to -04 on 2016-05-01 at 02:30.
  - Asia/Magadan switches from +10 to +11 on 2016-04-24 at 02:00.
  - New zone Asia/Tomsk, split off from Asia/Novosibirsk.  It covers
    Tomsk Oblast, Russia, which switches from +06 to +07 on 2016-05-29
    at 02:00.

- Rebase to 2016c
  - Azerbaijan no longer observes DST.
  - Chile reverts from permanent to seasonal DST.

- Rebase to 2016b
  - New zones Europe/Astrakhan and Europe/Ulyanovsk for Astrakhan and
    Ulyanovsk Oblasts, Russia, both of which will switch from +03 to +04 on
    2016-03-27 at 02:00 local time.  They need distinct zones since their
    post-1970 histories disagree.  New zone Asia/Barnaul for Altai Krai and
    Altai Republic, Russia, which will switch from +06 to +07 on the same date
    and local time.  The Astrakhan change is already official; the others have
    passed the first reading in the State Duma and are extremely likely.
    Also, Asia/Sakhalin moves from +10 to +11 on 2016-03-27 at 02:00.
  - As a trial of a new system that needs less information to be made up,
    the new zones use numeric time zone abbreviations like "+04"
    instead of invented abbreviations like "ASTT".
  - Haiti will not observe DST in 2016.
  - Palestine's spring-forward transition on 2016-03-26 is at 01:00, not 00:00.
    Guess future transitions will be March's last
    Saturday at 01:00, not March's last Friday at 24:00.

- Rebase to 2016a
  - America/Cayman will not observe daylight saving this year after all.
    Revert our guess that it would.
  - Asia/Chita switches from +0800 to +0900 on 2016-03-27 at 02:00.
  - Asia/Tehran now has DST predictions for the year 2038 and later,
    to be March 21 00:00 to September 21 00:00.  This is likely better
    than predicting no DST, albeit off by a day every now and then.