Added/changed:
- Optimized emptying buildings in later game[/*]
Fixed:
- Trading dock was unfairly blocked in some cases[/*]
- Fences could ask to chop trees[/*]
- Some animals could secretely starve to death even after food arrived[/*]
- Stone mining camp could be overly dramatic about not having reachable deposits[/*]
- Crash on demolishing buildings in some cases[/*]
