While specific change logs for exactly version 6.31 are limited in current listings, the software has seen steady updates leading up to and beyond that version: zCommander - File Manager - App Store
Direct support for compressing and extracting ZIP files within the application. zCommander – File Manager 6.31
Includes instant "search-as-you-type" functionality and advanced tools to find files by name matching, date, size, or specific text content. File Management Tools: While specific change logs for exactly version 6