repmgr standby clone: option --recovery-min-apply-delay added, overriding any setting present in repmgr.conf.

Configuration: fix parsing of replication_type configuration parameter. GitHub #672.

repmgr standby clone: handle case where postgresql.auto.conf is absent on the source node.

repmgr standby clone: in PostgreSQL 11 and later, an existing data directory's permissions will not be changed to 0700 if they are already set to 0750.

repmgrd: prevent termination when local node not available and standby_disconnect_on_failover is set. GitHub #675.

repmgrd: ensure reconnect_interval is correctly handled. GitHub #673.

repmgr witness --help: fix witness unregister description. GitHub #676.