Changelog
=========
    * pyA20 0.2.1 (30 JUN 2015)
        * Fixed gpio1 connector constants
        * Fixed issue with SPI xfer function

    * pyA20 0.2.0 (02 SEP 2014)
        * Updated to enable SPI and I2C control
        * GPIO constant in separate modules
        * Added example files
        * Added support for Python3
