0.2.057

Files:
Qapla0.2.057 = Linux Version
Qapla0.2.057.exe = Windows Version needing up-to-date DLL to run
Qapla0.2.058_Static.exe = Windows Version with statically linked library, no need for up-to-date DLL
Qapla0.2.058_OLD_HW = Windows Version for older hardware also with statically linked libraries

• More than +200 Elo compared to Qapla 0.1.1
• Minor changes in eval, mostly rooks and queen on #7 rank
• Implemented late move reduction
• Implemented kind of butterfly history boards (but with piece/target square instead of source/target square)
• Singular extension + check extension
• IID
• Verify on Null moves
• More consistend aspiration window
• Better primary variant line due to always extend the last ply on PV node search, if a transposition table entry is found
• Refactoring many code lines left due to the first non-recursive approach
• MultiPV for UCI
• Pondering bug fixed for UCI
• Simple pondering for XBoard (using tt to remember pondering result)
• Thread caching for computation thread (no longer creating a new thread whenever a new move is played)
• Nore consistently preventing loss on time for very short time controls
• Windows version (the .exe) and linux version (clang++ compiled) availabe. The linux version is about 10% faster than the windows version