PG 12 draft release notes

I have posted a draft copy of the PG 12 release notes here:

    http://momjian.us/pgsql_docs/release-12.html

They are committed to git.  It includes links to the main docs, where
appropriate.  Our official developer docs will rebuild in a few hours.

-- 
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

+ As you are, so once was I.  As I am, so you will be. +
+                      Ancient Roman grave inscription +