almost fully up to py33 compat
Merge branch 'master' into py33
Merge branch 'master' of github.com:bipy/pyqi into py33

Conflicts:
	pyqi/core/command.py
	pyqi/core/interfaces/optparse/output_handler.py
more fixing for py33
2to3 removed, mention in changelog
now valid for python 2.7 and 3.3
travis+tox
added 3.3 mention to doc index
listing py 33 in classifiers
added pyqi back to travis
hopefully travis and tox play well now
Merge branch 'master' of github.com:bipy/pyqi into py33
py3 fix for stringio
type name fix
py3 fix
added is_py2
py2 check
is_py2 check
print version info check
removed print