Adjust evaluation bonuses
Adjust evaluation bonuses

- Lower mobility from 2cp/move to 1cp/move
- Lower rook on open file from 20cp to 15cp
- Lower pawn shield bonus from 20cp to 15cp

GunshipPenguin/shallow-blue,GunshipPenguin/shallow-blue,GunshipPenguin/shallow-blue,GunshipPenguin/shallow-blue