docs: add missing documentation

feat(game): add check for combo skill

chore(core): update version

fix(core): save CurrentState to avoid race condition

feat(game): keep only skills of type Player in player's skills

feat(game): make sure skill cooldown reset is interpreted correctly when sent before "su"

fix(game): do not update position from su packet if it is null

chore(game): update version

fix(game): update position of caster upon SuPacket

fix(core): do not update default state

fix(core): do not react to contracts that errored

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

chore: update versions

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

Make combat nonblocking, make multiple queues for distinct operations

chore: use version prefix to allow for setting a version suffix

chore(core): update version

feat(game): remove primary and secondary skill from OtherSkills, add AllSkills

fix(core): remove a contract after timeout

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

feat(core): add support for timeout moving to errors