ensure correct return codes are returned for repmgr node check --action= operations (GitHub #340)

Fix repmgr cluster show when repmgr schema not set in search path (GitHub #341)

When using --force-rewind with repmgr node rejoin delete any replication slots copied by pg_rewind (GitHub #334)

Only perform sanity check on accessibility of configuration files outside the data directory when --copy-external-config-files provided (GitHub #342)

Initialise "voting_term" table in application, not extension SQL (GitHub #344)