* ADD docs/change-license-emails.txt, which includes email exchanges between
myself and intrigeri, including links to Debian and LEAP mailing lists with
arguments for and against using AGPL for a library.
* CHANGE license header for all files.
* CHANGE LICENSE file and gnupg/copyright.py to use GPLv3+ text.
* FIX Python3 error where a :class:`collections.OrderedDict` instance,
including it's keys() method, is not iterable.
* CLOSES PR#7 In Python 3 OrderedDict.keys() are not indexable
We could always cast counts.keys() to a list, from the dictionary view they
are but a more efficient way of doing this is to simply pop the items from
our result list as we traverse the returned iterable dictionary view.