Trading Update - v0.6.0.24

Quite a few changes with traders, trading and economics with this update. Main change being that buy/sell prices now fluctuate daily, depending on previous buy/sell amounts. You can also have multiple traders due, where previously only one inbound was allowed.

Lots of other little changes with balancing, full update notes:-

• Daily resource price fluctuations based on previous demand.
  
• Visitor facilities influence visitor number per trader.
  
• Trader spawning, change check to allow multiple, based on trader settings/disembark fee.
  
• Disabling navigation beacon now doesn't cancel due traders.
  
• Ship comms, update to show multiple due traders.
  
• Research cost adjustments.
  
• Haul amounts (ore) adjusted for droid and human workers.
  
• Improve: Turrets now don't target very slow moving scrap/meteors unless getting close to your station.
  
• Fix: Ships comms ticker only need to generate the max 8 displayed.
  
• Fix: Trade/Tutorial large button sprite not scaling correctly.
  
• Fix: Navigation beacon setting missing from save data.
  

Nick