3.1.0

In-app feedback: a tester long-presses the floating ball (or shakes the device) and writes one sentence. It is submitted with the screen, the element they picked, the build, and the appearance and simulation state.

Adds Swift Package Manager support.

⚠️ SwiftPM consumers must add -ObjC to Other Linker Flags. CocoaPods does this for you; without it some features fail at runtime with an unrecognized selector.