Minor changes for better legibility on iOS/iPadOS/macOS 26

– Updated for iOS 17+ – When running on macOS, Crystal Flight's older "designed for iPad" interface has now been replaced with a native macOS implementation – Exports PNG images via Mail, Messages, AirDrop, Save to Files, and Copy

German translation added, thanks to Stas Drisner

Rewrote frustum culling on GPU for better efficiency on devices with A9 or newer processors.

- Entire app re-written in Swift. - Uses “compute shader” to pre-transform and pre-light the atoms before rendering the crystal, for improved efficiency. - Simplified tiling algorithm.

- Added Italian translation, thanks to Daniela, Isabella Eva and Davide Bigatti - Panels display correctly in Dark Mode - Show/Hide bonds

Supports multiple windows both when running on macOS and when running on iOS

- User interface rewritten in SwiftUI - Runs on Apple Silicon Macs as well as on iPhones and iPads - More flexible image export

- Supports Wide Color displays - Added Portuguese translation, thanks to Nuno Fernandes

- Launch-screen format satisfies new App Store requirement - Toolbar height adapts to default for iPhone or iPad

Updated for iOS 13

- Added screenshots for iPad Pro (3rd Gen)

- Updated for iOS 11 and 12