postgresql-unit 7.9

• Mark _PG_init with PGDLLEXPORT

postgresql-unit 7.8

• Upgrade .github CI test

postgresql-unit 7.7

• Fix printing of values around 1e33 on i386.

postgresql-unit 7.6

• Import definitions.units September 2022 Version 3.15.
• Add R ronna, Q quetta, r ronto, Q quecto, Ri robi, Qi quebi prefixes.

postgresql-unit 7.4

7.4: May 20, 2021 - World Metrology Day

• Fix hash table creation on PostgreSQL 14.

postgresql-unit 7.3

7.3: Oct 19, 2020

• Packaging updates.

postgresql-unit 7.2

7.2: May 20, 2019 - World Metrology Day

• Rewire PostgreSQL 12's new extra_float_digits=1 default internally to 0 to
  keep nice, short decimal representations.

postgresql-unit 7.1

7.1: Dec 3, 2018

• Import definitions.unit 2.44 from units 2.18 with 36 new units.
  When upgrading from a previous install, use SELECT unit_load(); to import.
• Adjust powers.h to round "1" down by one ULP.

postgresql-unit 7.0

7.0: Sep 28, 2018

• Format time using commonyears + days + hh:mm:ss.sss s.
• Avoid using Gs for Gigaseconds, that's actually gauss.
• Modify @(unit, text) operator to return text instead of cstring.
• Import definitions.units from GNU units 2.17 with 13 new units.
• Add π to known units.
• Remove bison 2 compat mode, but keep pregenerated files for jessie and
  trusty.
• Support send/receive via the binary protocol.
• Support Infinity and NaN.
• Add strict comparison operators that error out when dimensions of arguments
  do not match: << <<= == <<>> >>= >>.
• Add range type over units: unitrange.

postgresql-unit 6.0

6.0: Mar 7, 2018

• Add @@ operator: similar to @, but returns the value of the resulting unit
  as double precision number.
• Fix parsing of addition/subtraction in unit values.
• Grant SELECT on unit prefixes and units table to public.
• Add unit_load() function to load/update the data tables.