Cardano HW CLI v1.20.0-beta.1

Added (compared to v1.19.1)

• Support for the rewritten Ledger Cardano app v8 (ledgerjs 8.0.0-beta)
• Unrestricted (expert mode) transaction signing: hw-cli switches to it automatically when no standard signing mode can sign the tx, gated by the new --allow-unrestricted-mode flag on transaction witness (requires Ledger app v8 or newer with expert mode enabled on the device; not supported by Trezor or Keystone)

Notes

• Beta build for testing #209
• Binaries were built on macOS rather than the usual Linux environment — report any startup issues
• Unlike previous releases, a mac-arm64 build is included (runs natively on Apple silicon); the mac-x64 build keeps working there via Rosetta