Changes / Fixes

UI

Fixed an issue where joining a game in the server browser would fail if the game had no password and you had previously joined a game with a password, without restarting Derail Valley inbetween games - #21 Host Unreachable error
Modified the connection attempt sequence such that Punching attempts are skipped if NAT punch is disabled
Chat is now disabled in single player mode - no point talking to yourself!

Fixed issue where brake pressures would be out of sync if the pressure was >0 when a player joined
Fixed some issues with de-serialisation of RigidBodySnapshot data
Fixed issues with syncing steam locomotives:
- Clients can now shovel coal into fireboxes
- Firebox level is now properly synced across clients
- Clients can now light the firebox
Locomotive despawning has now been re-enabled and operates as per normal game logic, with the exception that all players are taken into account, not just the host.
Note: despawn time for a locomotive is 2 hours, the game will need to be running for this long before despawns begin
Standard starting items (Comms radio, maps, etc.) are now given to all players, regardless of game mode (career / sandbox) - previously, clients connecting to a sandbox mode had no inventory

Allowed for better versioning so minor updates can be released effectively in the future
Minor changes to prevent errors when quitting the game

Locomotive sync issues seem to have improved, but not entirely resolved, work is ongoing to fix this
#22 Jobs De-spawn whilst still in station
Clients are unable to self service locomotives - self service objects (e.g. pipes, chutes, plugs, nozzles) not synced