Bugfixes:

• invalid Stop LSN from master now handled correctly. Reported by @alexign and Alexander Lakhin
• add-instance now check the existence of destination directories before attempting to create them. Reported by @alexign
• server version mismatch during validation now detected and error reported. Reported by @alexign. Contributed by @kuzmindb

Improvements:

• pg_probackup packages for Postgrespro Standard 12 and Postgrespro Enterprise 12 are available in repository