feat(packets): make su packet position nullable

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(combat): use dash on character if needed

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

fix(data): read UsesSecondaryWeapon correctly

chore: update versions

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

Make combat nonblocking, make multiple queues for distinct operations

chore: add rest of version prefixes

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

ci: add version suffix to dotnet build and nuget push

ci: fix nightly pack

ci: add nightly nuget push to myget

chore(core): update version

feat(combat): support dash in use skill operation

fix(combat): walk in correct range for zone skills

fix(combat): look at correct entity on map when determining whether attack technique should continue