better tile classification
Former-commit-id:
706c2cc4d1df61aa38408ac0f2d79d9ec54afa00
pre-move config validation
Former-commit-id:
41b1d4623dd42a6bacd4fec89736022dc620fadd
engine: debug lines module
Former-commit-id:
666c62457411127dae8d79040dfd407e726dcff2