Suggestions for future releases

I have 2 suggestions for future versions:

- if you do an in place upgrade on a unit (eg tank at level 1) with half of its hitpoints gone, you should get all the hitpoints reset to 100% when upgraded to level 2 as in theory, the tank would have been fixed and rebuilt during the process.

- at least let battleships shoot at attacking enemy aircraft; they can in real life (even though that is not their purpose) and at least on a limited basis

Hope you agree!