Fix crash bug that can occur when you autosave while a shipyard is rebuilding a hangar's destroyed ship.
Fix the logic to handle switching save slots (in both remake and original game) to be more straightforward to prevent possible data loss.
Fix bug that made items intended to benefit only one ship type, accidentally display as benefitting all ship types, and also accidentally benefit all ship types (affects existing your items).
Fix bug where attack speed bonuses were having the opposite effect.
Fix bug that allowed items to spawn that offered bonuses to specific ship types the player couldn't own, such as the enemy command center.
Fix bug that allowed items to spawn that offered bonuses to ships that can't apply, such as offering a bonus to engines for your command center.
Structural changes to prepare for future rebalancing.