Let items be turned off (e.g., light sources)
Don't let turned off items produce light, regeneration, etc.
Add general apply and fling commands and a quench light command
Make sure no quenched light source items are generated
Let items on the floor light up surroundings
Sync frames when running or playing keys back
Fix a couple divisions by zero
Fix too long actor name prefix displayed
Fix AI unable to apply items
Let AI quench a light source if it betrays them
Clean up item stores manipulation
When cycling targeting modes, switch from standard Enemy straight to Point
Move frame sync to just after playback frame sent
Make shrapnel symmetric and deterministic
Make blocking deterministic: half normal damage

Also, make it possible to block projectiles and make the damage
of darts and harpoons deterministic.
Fix potentially wrong actor designated to advance time
Make the lclear field perpetually accurate
Explore suspect tiles only if any walkable tiles not yet explored
Don't count secret tiles as explorable
Mark suspect tiles as passable

but disallow moving to unknown tiles from them, to avoid bumping
into them while exploring unknown tiles.