First-draft release notes for 18.3.
As usual, the release notes for other branches will be made by cutting
these down, but put them up for community review first.
Branch
------
REL_18_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/c5edc6c8ff4c2d6f116abbc532b1cd130fcfbc17
Modified Files
--------------
doc/src/sgml/release-18.sgml | 256 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 256 insertions(+)
