------------------
Breaking changes:
- Adapt to changed visibility of `buildfacade` in
`AccessControl.requestmethod`. Requires AccessControl >= 4.0b6
[tschorr]
Bug fixes:
- More Python 2 / 3 compatibility
[pbauer, MatthewWilkes]
- Fix marmoset monkey patching for Python 3
[jensens]
- Don't patch until zcml loaded
[davisagli]
- Put the marmoset on a leash (reset csrf-checks after tests)
[davisagli]