* Northern Cyprus switches from +03 to +02/+03 on 2017-10-29.
* Fiji ends DST 2018-01-14, not 2018-01-21.
* Namibia switches from +01/+02 to +02 on 2018-04-01.
* Sudan switches from +03 to +02 on 2017-11-01.
* Tonga likely switches from +13/+14 to +13 on 2017-11-05.
* Turks & Caicos switches from -04 to -05/-04 on 2018-11-04.
* A new file tzdata.zi now holds a small text copy of all data.
* The zic input format has been regularized slightly.