The release notes for this new version:
- Bugfix: The deadlock detection mechanism could in theory (but not in practice) wrongly classify a few game positions as deadlocked.
The accompanying YASS solver plugin was not affected even though it has a similar, but more thorough, deadlock detection mechanism.
Thanks to Matthias Meger for reporting this bug.
A feature comparison of the main Sokoban programs can be found in the Sokoban Wiki.