v2.2.0

• Backwards incompatible change

  • Change the Linux backend's default :delay_us from 10 to 0 microseconds.
    Pass delay_us: 10 to Circuits.SPI.open/2 to preserve the previous
    post-transfer delay before chip select is deasserted. This aligns the API
    with what most people assume to be the case, and those users not setting
    the delay likely never needed a 10 us delay in practice.

• Changes

  • Don't apply :delay_us on intermediate transfers when writing more than the
    low level max transfer size. The final transfer segment applies the delay.
  • Fix C compilation issue when passing MAKEFLAGS=j<n> when n > 1.