pitrery 3.0

Version 3.0 of Pitrery <http://dalibo.github.io/pitrery/> - the PITR
made simple software - is available!

== New feature ==

* Support for PostgreSQL 12
* Rename "xlog" to "wal" in scripts and configuration keys

== Details ==

PostgreSQL in version 12 has changed how recovery configuration is managed.
There is no more "recovery.conf" file:
  - The recovery configuration keys are read from the postgresql.conf file.
     Upon restoration, recovery.conf settings are written by pitrery at the
     end of the postgresql.conf file.
  - A "recovery.signal" or "standby.signal" will be used by the restored
    cluster to know what action to take
     A new option is declared: RESTORE_MODE (or the "-m" switch). For
     restoration, it must be set either to "recovery" or "standby".
  - Multiple conflicting recovery_target* specifications are not allowed.
    PostgreSQL will make the check on startup.
  - We now advance to the latest timeline by default.

Since PostgreSQL version 10, "xlog" has been renamed to "wal". Make this
change
in pitrery:
  - "archive_xlog" script is renamed to "archive_wal".
  - "restore_xlog" script is renamed to "restore_wal".
  - configuration key PGXLOG is renamed to PGWAL.
  - the WAL archive directory ARCHIVE_DIR is set by default to:
    "$BACKUP_DIR/archived_wal".
  - deb and rpm packages will maintain symbolic link to old "*_xlog"
scripts.

== Getting it ==

Pitrery tarballs are now on GitHub releases
<https://github.com/dalibo/pitrery/releases/tag/v3.0> and distribution
packages are now available on Dalibo Labs YUM
<https://yum.dalibo.org/labs> and APT <https://apt.dalibo.org/labs>
repositories. Details are available in the downloads
<http://dalibo.github.io/pitrery/downloads.html> page.

== About ==

Pitrery is a set of Bash scripts to manage PITR backups for PostgreSQL.

It is a Dalibo Labs <https://labs.dalibo.com/> project maintained by
Thibaut Madelaine, Étienne Bersac and Thibaud Walkowiak.