Re: row filtering for logical replication

Here is the v58* patch set:

Main changes from v57* are
1. Couple of review comments fixed

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Review comments (details)
=========================

v58-0001 (main)
- PG docs updated as suggested [Alvaro, Euler 26/12]

v58-0002 (new/old tuple)
- pgputput_row_filter_init refactored as suggested [Wangw 30/12] #3
- re-ran pgindent

v58-0003 (tab, dump)
- no change

v58-0004 (refactor transformations)
- minor changes to commit message

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[Alvaro, Euler 26/12]
https://www.postgresql.org/message-id/efac5ea8-d0c6-4c92-aa82-36ea45fd013a%40www.fastmail.com
[Wangw 30/12]
https://www.postgresql.org/message-id/OS3PR01MB62756D18BA0FA969D5255E369E459%40OS3PR01MB6275.jpnprd01.prod.outlook.com

Kind Regards,
Peter Smith.
Fujitsu Australia