Log Message:
repmgr: updated to 4.1.0

4.1.0:
Configuration file changes
* Default for log_level is now INFO. This produces additional informative log \ 
output, without creating excessive additional log file volume, and matches the \ 
setting assumed for examples in the documentation.
* recovery_min_apply_delay now accepts a minimum value of zero

repmgr enhancements
* repmgr: always exit with an error if an unrecognised command line option is \ 
provided. This matches the behaviour of other PostgreSQL utilities such as psql.
* repmgr: add -q/--quiet option to suppress non-error output.
* repmgr cluster show, repmgr node check and repmgr node status return non-zero \ 
exit code if node status issues detected.
* Add --csv output option for repmgr cluster event.
* repmgr witness unregister can be run on any node, by providing the ID of the \ 
witness node with --node-id.
* repmgr standby switchover will refuse to run if an exclusive backup is taking \ 
place on the current primary.

repmgrd enhancements
repmgrd: create a PID file by default. For details, see repmgrd's PID file.
repmgrd: daemonize process by default. In case, for whatever reason, the user \ 
does not wish to daemonize the process, provide --daemonize=false.

Bug fixes
repmgr standby register --wait-sync: fix behaviour when no timeout provided.
repmgr cluster cleanup: add missing help options.
Ensure witness node follows new primary after switchover.
repmgr node check and repmgr node status: fix witness node handling.