Build docs under tox.
Pull in pyramid_chameleon explicitly.

Pyramid 1.5 no longer wires up Chameleon templates by default.
Py3k: Replace class advice w/ class decorator.

'zope.interface.implements' -> 'zope.interface.implementer'.

Also, replace print statements.
Py3k: forward-compat exception syntax.
Py3k:  straddle imports.
Py3k:  dict.items no longer a list.
Py3k:  crypted passwords are bytes.
Accomodate newer deform / pyramid.

Avoid unicode literals (Python 3.2).

Tests now pass on Python 3.2, 3.3.
Py3k unit test nannyism.
Explicit support for Python 3.2 and 3.3.
Remove fossil.
Avoid resource warnings under Py3k.
Avoid ResourceWarnings during testing under Py3k.
Explicit support for Python 3.4.