fix(packets): make nullable wrapper a class

feat(game): add mates processing

feat(game): add revive handling

feat(game): add friends processing

feat(game): add group processing

feat(game): add (basic) inventory parsing

feat(game): put friends, group, inventory, skills in Game instead of Character

chore: make updates to get rid of warnings

feat(packets): add many new packets

feat(game): handle null skill vnum in su packet responder

fix(game): create character on at packet received

fix(game): make effects vnum short instead of long

chore: update Game

Merge pull request #32 from Rutherther/combat

Add combat extension

fix(game): create npc instead of monster in InResponder

fix(packets): correctly use cast id instead of vnum in UseSkill packet

feat(game): respond to skill use packet sent from the client to set cooldown early

fix(game): set health to 0 on entity death

fix(game): verify eq packet size

Merge pull request #8 from Rutherther/game-objects

Game objects