feat(game): add smart dialog handling, rejecting conflicting answers to same dialog

Resolves #57.

feat(core): split raw client and managed client as well as packet handlers

Resolves #65

fix(game): using dash on character produced an error

Merge pull request #60 from Rutherther/feat/combat-v1

Make combat nonblocking, make multiple queues for distinct operations

feat(game): cancel the skill contract in case no response is obtained

fix(game): make skills api safer by treating dash correctly and allowing only player skills

feat(game): add dialog handling, dialog opened event

Merge pull request #55 from Rutherther/feat/contracts

Add contract system

feat(game): split nostale apis into safe, unsafe, add contracts usage

chore: use specific errors instead of GenericError

chore: add async analyzer and meet its standards

Merge pull request #51 from Rutherther/feat/easy-api

Add easy apis for various things

feat(game): add mate skills api

feat(game): update skills api to allow using skills on self (character)

feat(game): add inventory api

feat(game): add inventory api

feat(game): add api for mates (company, stay, send back)

chore: make updates to get rid of warnings

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

Merge pull request #8 from Rutherther/game-objects

Game objects