NPCs

Stats
Each NPC is given a baseline set of scores in each of the following stats:
 * Height - Governs how tall the NPC is, and how much snow is required to bury them
 * Speed - Governs how quickly the NPC can clear snow
 * Endurance - Governs how long the NPC is able to clear snow for before requiring a break
 * Paranoia - Governs how alert/aware an NPC is at the beginning of the game, and therefore effects the initial level of "awareness" for the town overall