Fixes:

• Incorrect declarations of trace functions in the public API.
• Incorrect primary page count in gstat. RS-140668.
• Generation of incorrect data recovery script for downgrade. RS-87092.

Improvements:

• Bypassing incompatible data during downgrade. RS-87092.
• Predefined RDB$SYSADMIN, RDB$DBADMIN, and RDB$USER roles. RS-142866.
• Clearing memory for trace logs after they are archived. RS-142651.
• zlib library updated to version 1.13. FB-7755.
• Added EVENT_DATABASE field for all binary trace events. RS-144930.
• For each security event, its level and type are recorded. RS-142650, RS-143025.
• A new SecurityLog configuration parameter that implements the ability to send security event messages to the system log. RS-143110.
• Mint shuts down database if metadata validation completes with an error. RS-142647.
• Ability to sign metadata in mint using a certificate. RS-142875.
• More informative output of CryptoPro plugin error messages.
• Ability to check plugin hash from plugins.conf before loading it. RS-143120.
• The number of events recorded by the trace plugin is added to trace records. RS-143021.
• New trace option "archive_directory" defining the path to the compressed log files. RS-142649.
• Procedures with SQL SECURITY DEFINER can use authentication via ExtAuth the with login of the owner. RS-148158.