- add support for PostgreSQL 9.6
- improve and rename "ready_archives" to "archiver"
- add service sequences_exhausted to monitor sequence usage
- add service stat_snapshot_age to detect a stuck stats collector process
- add service wal_receiver to monitor replication on standby's end
- add service pgdata_permission to monitor rights and ownership of the PGDATA
- add support for "pending restart" parameters from PostgreSQL 9.5+ in check_settings
- add timeline id in perfdata output from wal_files
- fix wal_files, archiver, check_is_replay_paused, check_hot_standby_delta, check_streaming_delta and check_replication_slots for PostgreSQL 10
- fix archive_folder to handle compressed archived WAL properly
- fix backends_status for PostgreSQL 9.6
- warn when no rows are returned in custom_query service
- make thresholds optional in service hot_standby_delta
- make thresholds optional in service streaming_delta
- remove useless thresholds in backends/maximum_connections perfdata
- add warn/crit threshold to steaming_delta perfdatas
- use parameter server_version_num to detect PostgreSQL version
- fix a race condition in is_storable to handle concurrent executions
correctly - fix a bug in service locks that occurs with PostgreSQL 8.2
- fix rounding in hit_ratio
- fix perl warning when some ENV variables are not defined
- fix bug in "human" output format
- fix version check for all hosts for service hot_standby_delta
- fix bug in pg_dump_backups related to age of global files
- fix documentation about default db connection