I think I've finally tracked down and fixed the long-running bug where the AI would fail to upgrade its ships or use new technologies it researched. Many thanks to everyone who sent in example saves. If there's interest, I can also write up an in-depth explanation of what small, stupid thing caused this bug.

• The AI now updates what ships it builds based on the technologies it has researched.
  
• The AI now correctly upgrades ships and buildings.
  
• Dead governors no longer stay at their assigned cities, gently decaying.
  
• Fixed a missing German translation.
  
• Flipped some defensive buildings that were facing the wrong way.
  
• Mod loading progress bar is no longer too short.