v1.2.0

• Updates
  • Add the :lsb_first option to support SPI transfers that send the least
    significant bit first rather than the most significant one. If the bit
    reversal isn't supported by the hardware, a software version is used.
  • Add config/1 to return the configuration for an SPI bus reference. This is
    useful for checking what is actually being used.
  • Update transfer/2 to support iodata. This makes the interface more
    convenient since now you can prepend SPI message headers in your code
    without having to concatenate binaries.
  • Support full paths being passed to SPI devices in open/2. Previously this
    resulted in errors, but it was easy to forget.