First-draft release notes for 13.4.

Tom Lane <tgl@sss.pgh.pa.us>

Commit: 2f38ec6a157b60291ece1deb072bfff84f317334
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 2021-08-06T18:54:59Z
Releases: 13.4
First-draft release notes for 13.4.

As usual, the release notes for older branches will be made by cutting
these down, but put them up for community review first.

Files

PathChange+/−
doc/src/sgml/release-13.sgml modified +1761 −0

Documentation touched