Fixed for issue #44
Python 3.x changed the way dict.items() behaves -- doesn't return a list, returns a dict_items object, that then has to be wrapped with list() to start using it as a list.
Also fixed Makefile on macOS 10.14.
Python 3.x changed the way dict.items() behaves -- doesn't return a list, returns a dict_items object, that then has to be wrapped with list() to start using it as a list.
Also fixed Makefile on macOS 10.14.