Fixes & Improvements - v0.7.0.9

Some optimisations and fixes today. Oh and trade ships can now have timers for waiting for dock and whilst docked. They'll leave after a period of time without you having to dismiss them manually.

Patch notes:-

• Improve: Page solar panel efficiency updates.
  
• Improve: Traders can leave if waiting for dock or after docking after a period of time.
  
• Fix: Loading a save game, with traders being repaired wouldn't complete. Update repair bay id.
  
• Fix: Saving when a trader arrival message existed could cause a crash.
  
• Fix: Audio bullet sfx may not play if audio bus full, causing crash, check return state.
  

Nick