v1.3.1

• Bug fixes

  • Lengthen timeouts on messages sent to ports. This provides more slack time
    on heavily loaded uniprocessor devices that were missing timeouts by ~100 ms
    periodically.
  • Move C object files and the port executable to under the _build directory.
    This makes it easier to switch between host/target builds especially when
    using Elixir 1.8's mix target feature.

• Improvements

  • Handle iodata on Circuits.UART.write in addition to binaries and
    charlists.