Version 0.5.18 brings improvements for making bigger buildings that span multiple floors.
The new Level 5 full size window panels make it possible to combine them into skyscraper-like glass walls.

Changes:

• Improved window furniture rendering to enable various shapes of windows
  
• Added bigger Level 5 windows
  
• Made it easier to make smaller rooms than 2x2
  
• Enabled bankruptcy in sandbox mode (only affects new savegames)
  
• Improved mod support for adding new jobs
  
• Fixed the loyalty of CEO decreasing in some cases
  
• Fixed not being able to place furniture and blueprint on second floor if there was an employee downstairs on the same coordinates