Lost 56bd1d04 in a merge?

[ci skip]

Features added, new Python versions / platforms supported.

[ci skip]

Using 'random' in a test exercising a known bug is a code stench.

See: http://blog.travis-ci.com/2014-12-17-faster-builds-with-container-based-infrastructure/

They are always empty, except for docstrings, but the metaclass confuses
the coverage bits for branch detection.

Node sizes

Fix p3 32bit

up.

force persistent and interface eggs in test and interpreter scripts

version # when we're ready to release.

Untested. I'll let travis take the first crack. Man, I need to
figure out tox.

Also, I'm not happy with the config variable names I originally
picked.  I'll fix those after the tests pass.

to make them work on mac.

We have to check both TypeError and OverflowError. On Python3 32-bit,
we'll get an OverflowError, otherwise, we get type error.