Version 0.65  - 22 July 2019
              - updated for RPI 4 function naming
              - added gpio_get_pud() method for RPI 4

Version 0.64  - 14 July 2019
              - updated for RPI 4
              - added gpio_set_pud() method for RPI 4

Version 0.63  - 24 September 2017
              - Added tests and dependency on HiPi 0.66

Version 0.62  - 20 March 2017
              - Build errors after release 0.61

Version 0.61  - 19 March 2017
              - Build errors on non-threaded Perl

Version 0.60  - 15 February 2017
              - Split from main HiPi modules