Bugfixes:

• fixed memory leak in pagemap extraction routine. Reported by @beremour
• fixed integer overflow in checkdb. Reported by Nikolay Popov
• now temp files in pgsql_tmp directory are excluded during backup. Reported by @beremour
• retention merge after remote backup now works correctly. Reported by @Guzya
• for ptrack 1.x version backups in ptrack mode can be taken in series. Reported by Roman Zharkov
• during instance validation multi-timeline backup chain can be validated correctly. Reported by @lalbrecht

Improvements:

• SUSE 15.2 packages are available in repository
• PostgreSQL 13 is supported and packages are available in repository
• possibility of WAL archive corruption due to double switchover reported to PostgreSQL community. Reported by @lalbrecht. Thread: https://www.postgresql-archive.org/history-file-on-replica-and-double-switchover-td6151536.html