• [CHANGE] Add state label to pg_process_idle_seconds #862
• [CHANGE] Change database connections to one per scrape #882 #902
• [ENHANCEMENT] Add wal collector #858
• [ENHANCEMENT] Add database_wraparound collector #834
• [ENHANCEMENT] Add stat_activity_autovacuum collector #840
• [ENHANCEMENT] Add stat_wal_receiver collector #844
• [ENHANCEMENT] Add xlog_location collector #849
• [ENHANCEMENT] Add statio_user_indexes collector #845
• [ENHANCEMENT] Add long_running_transactions collector #836
• [ENHANCEMENT] Add pg_stat_user_tables_size_bytes metric #904
• [BUGFIX] Fix tests on 32-bit systems #857
• [BUGFIX] Fix pg_stat_statements metrics on Postgres 13+ #874 #876
• [BUGFIX] Fix pg_stat_database metrics for NULL stats_reset #877
• [BUGFIX] Fix pg_replication_lag_seconds on Postgres 10+ when master is idle #895