chore: move repository url and license to Directory.Build.props

docs: add missing documentation

feat(game): add check for combo skill

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(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

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

chore(game): update version

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

chore: update versions

chore: update versions

fix(game): do not add game responder multiple times