theeuh 0.1.5

• Use CRAN churon (>= 0.1.13) instead of a pinned GitHub dependency.
• Document explicit ONNX Runtime installation and configure it in CI.
• Disable ONNX Runtime telemetry during initialization to prevent trace files.
• Credit the original KoSpacing author and document model provenance.
• Document a Windows installation workaround for churon 0.1.13.
• Validate character-vector inputs and preserve missing values.
• Preserve literal |, «, and » characters when decoding predictions.
• Keep empty inputs independent of the model and runtime.
• Run tests on CRAN, skipping inference only when ONNX Runtime is unavailable.