v1.1.1

This release fixes some issues and adds firmware UUID support. This support can
be used to unambiguously know what's running on a device.

• Updated dependencies

  • nerves_system_br v1.2.2

• Bug fixes

  • Empty serial numbers stored in the U-Boot environment would be used instead
    of reverting to devices IDs built into the CPU or board.
  • It wasn't possible to enable QtWebEngine (needed for kiosk apps)