AEI 1.3 Release

Long overdue update with Python 3 compatibility while keeping 2.7 compatibility as well. Thanks to TFiFiE for providing initial Python 3 compatibility work and motivation to finally get this finished.

Other changes include:
Gregory Clark (rabbits) added proper support for losing games with illegal moves.
Some modules actually have tests now.
Several minor bugs fixed, many of which were found by writing the above tests.

AEI 1.2 release

Finally a new AEI release. Not much in the way of protocol changes but the implementation is much more robust.