Python 3 compatibility

[dmr]

I changed a few lines to make logan python3 compatible:

1. "print " --> "print("
2. "except Exception, e" --> "except Exception as e"
3. "raise ConfigurationError unicode(e), exc_info[2] " --> "raise ConfigurationError(unicode(e), exc_info[2])"
4. iteritems --> items
5. execfile is gone, I used http://stackoverflow.com/questions/436198/what-is-an-alternative-to-execfile-in-python-3-0

Also, I removed unittest2 because I couldn't get it to run in python3.

Do you like it? What can I improve?

[dcramer]

looks good, thanks!

[dmr]

That was quick :)

[dmr]

Is Python3 support a reason to release a new version? What is missing for a release?

[khakulov]

Can you guys release this fix? I need it in my project.

[dmr]

Workaround:

pip install git+git://github.com/dcramer/logan.git@master#egg=logan -U