The most visible change in python3 - removal of print statement and all
the crufty
print >> sys.stderr, foo,
The from __future__ import print_function makes it available in python
2.6
fostering open source contributions says that it can discourage contribution by
conveying a false sense of "code ownership". Marking territory is negatively
affecting collaboration. See http://www.youtube.com/watch?v=ZSFDm3UYkeE
