python 3.x is not yet supported
print à la pyton 3.x
dict.iteritems -> dict.items: works on 3.x does not hurt on 2.x
use relative imports to please 3.x
take a copy of dict items list (suggested by 2to3)
take copy of dictionary keys list (suggested by 2to3)
replace filter by list comprehension (suggested by 2to3)
make utils.py both 2.x and 3.x compatible
allow 3.x users to install
fix dict random order in connection error output