Changelog

1.0.0

• Initial release
• Register upgrade trees with UpgradeAPI.RegisterTree()
• Add nodes to existing trees with UpgradeAPI.RegisterInTree()
• Query purchase state with UpgradeAPI.IsPurchased() and UpgradeAPI.CanPurchase()
• Support for Money and Research cost types
• Automatic per-slot save/load persistence
• Property inheritance (icons, colors, cost type) from parent to child nodes
• Vanilla icon matching via VanillaIconMatch
• OnPurchased callbacks fire on purchase and on game load