1.6.0

• Moved to 2021 edition of Rust
• Added three fold draw detection supported by Zobrist Hashing
• Misc bug fixes

1.5.2

• Further reduced excess CPU usage
• Fixed a bug related to capturing en passant
• Some tweaks to the search, no major changes
• Added check extension
• Mate in X moves is now correctly reported in UCI rather than just a large negative or positive number

1.5.1

Fixed issue where Walleye would have high CPU usage across multiple cores even when only using one thread to search

1.5.0

• Move generation performance tuning
• Switched to mimalloc memory allocator
• Changed build profile to compile for the native CPU arch (https://github.com/MitchelPaulin/Walleye#portability)
• Added null move pruning
• Fixed bug where engine would never capture en passant

1.4.0

• Greatly improved evaluation function
• Optimizations to the release profile
• PV Search
• Timing Tweaks
• Log generation is now disabled by default
• Fixed bug where it was possible for no move to be sent on short time controls

1.3.0

• Adds support for time control based move generation
• Implements the killer move heuristic
• Implements a much more robust logging framework
• Adds a test bench move generation mode
• General bug fixes and minor speed improvements

With this release the engine is ready to compete in a tournament setting.