Issue #10 - NPCs can now wander around! When a map loads it sends a 'wake' message to all the NPCs on that map, which starts them wandering if they are set as wanderers. Unloading a map sends a 'sleep' message that makes those NPCs stop wandering. When you talk to an NPC, the dialoglog will get a lock on it to prevent it from walking away while you're talking to it.