Committing some notes about higher-level dungeon gen.
Stub out a wizard command prompt, which doesnt do anything yet.
OK, /now/ it does something.
Only choose down stairs.
Add a ruined hall as the second floor, albeit not so ruined yet.
Draw dividers between the UI elements.
Center the map when its smaller than the available space.
Allow diagonal movement with numlock off.
Show everything the player is currently standing on.
Trail gen no longer cuts across the river!