v0.2.12: Bug Fixes and Demo Update

[h2]Changes/Bug Fixes[/h2]

• Removed the old restriction preventing portrait layout from being used in-game.
  
• Audio and chunk size settings are now properly saved and loaded. You will need to re-adjust these settings for them to take effect.
  
• Changed the minimum selectable screen resolution to 1024 x 768.
  

[h2]Demo Changes[/h2]

• Adjusted the planets featured in the demo to force the use of the upgrade system.