Gah! You're right! WASD was implemented (though I never use it), and since I FORGOT it was implemented, I rewired the s key for stealth to be mnemonic, instead of the y key which used to be stealth. Sigh. I'll fix it on the next pass! In the meantime, you can, however, still use the mouse to move - click any square that you can see a path to to move there by the shortest, most direct and safest path. Or click any square horizontally or vertically adjacent to your character to move to that square.