Unlimited undo

Ok I love the game obsessed with it back when it was battleship craft, thank you for bringing it back btw, but we need unlimited undos I just got stuck with a very expensive weapon that I was testing because I ran out of undos and also you you add a button that would allow us to sell weapons for Maybe 75% of the price because Im tired of deleting big ships and then having all these green numbers everywhere its extremely annoying please work on this

Battlship12 about Warship Craft, v2.1.15