Important fix!

Please update to this version asap.
There is a sneaky bug in the older ones that can cause an integer to overflow, we can't have that.

This is fixed now.
I also improved the market further.
The NPCs got a rework too. Miners work now as they should and deliver ores to the station.
I'm aware that there is still little representation of what NPCs do so far. It's a bit of a shame, since it is a pretty complex system already.

Last but not least, performance should also further improve / the game should run more efficient.