UAD:VP 0.3.1
Summary of changes since 0.2.24:
Campaign:
- Added a Campaign End Date option to keep or disable vanilla's forced 1965 retirement.
- Added Technology Spread modes plus research standing labels showing ahead/behind status versus the leader.
- Added Mine Warfare and Submarine Warfare toggles for existing campaigns.
- Added early Panama/Kiel canal opening support and continued campaign map visual polish.
Battle and Design:
- Added battle division AI control with the 6 hotkey and manual-order release behavior.
- Stabilized Always Sunny battle weather behavior and related battle/design UI fixes.