v0.4.0

The GPIO interrupt notification messages have been changed for consistency with
other circuits projects. The initial element of the tuple is now
:circuits_gpio, so messages will look like:

{:circuits_gpio, 19, 83268239, 1}

Please update your project if you call set_interrupts/2.

No more backwards incompatible changes are expected until after 1.0.

v0.3.1

• Bug fixes
  • Build C source under the _build directory so that changing targets
    properly rebuilds the C code as well as the Elixir code.

v0.3.0

• New features
  • Support pull_mode initializion in open/3.

v0.2.0

• New features
  • Add support for opening GPIOs to an initial value or to not change the
    value. This removes a glitch if you want the GPIO to start out high (the
    default was low) or if you want the GPIO to keep its current value.