update bootstrap
use a .rst ending
add an interpreter to buildout config
update to use standalone persistent library
next version will be 3.0
add trove classifiers
add a Python stub implementation of the Persistent class
and simplify fallback logic, as we always require ExtensionClass to be present
whitespace
simplify test module names
pep8
minimize test diff with upstream
use `__eq__` instead of `__cmp__` testing
pep8
tweaks