Added configurable mouse double-click to Gamelist Window
Create Best Game Windows with ::windows::gamelist::Open
Preparing 4.5.1 version
Changelog 4.4 -> 4.5.1
Development Release: Version 4.5.1
Fixed Recognizer::KPK() which cures some scidlet endgame blunders e.g.,

scidlet doesn't find the saving stalemate:
k1K5/8/1R6/2P5/8/8/8/1r6 b - - 0 1

scidlet spoils a win with exchanges:
2K5/k7/1p2R3/2P5/8/8/8/1r6 w - - 0 1

scidlet doesn't see the pawn is promoting:
8/4k3/R2r4/1P6/8/8/8/7K b - - 0 1