- item image and model renaming: use underscore only, no more dashes
- it_ring: no more auto (unreliable) free respawn position calculation
- ORI2DIR = {[WEST]=W, [SOUTH]=S, [EAST]=E, [NORTH]=N, [NODIR]=po(0,0)}
- puzzle resolver: add check subresolver type
- st_window: do no longer shatter balls on green, secure windows