* Jordan now starts DST on February's last Thursday.
* Samoa no longer observes DST.
* Merge more location-based Zones whose timestamps agree since 1970.
* Move some backward-compatibility links to 'backward'.
* Rename Pacific/Enderbury to Pacific/Kanton.
* Correct many pre-1993 transitions in Malawi, Portugal, etc.
* zic now creates each output file or link atomically.
* zic -L no longer omits the POSIX TZ string in its output.
* zic fixes for truncation and leap second table expiration.
* zic now follows POSIX for TZ strings using all-year DST.
* Fix some localtime crashes and bugs in obscure cases.
* zdump -v now outputs more-useful boundary cases.
* tzfile.5 better matches a draft successor to RFC 8536.
* A new file SECURITY.