• fix infinite loop in page validation
• fix segfault in parallel ptrack connections
• allow to use delete-wal option wihtout delete-expired(in accordance with documentation)
• allow to use pg_ptrack_get_block if it`s available and page is invalid
• help update
• pglz is not thread-safe, do not allow multithread backup with pglz compression
• multiple minor fixes
• testgres 1.3 support