Compatability with Python 3

[cyberpoint]

Compatability with Python 3

[EricSchles]

I just found the tests folder and ran the tests. It seems I missed one of the bugs but caught it with after running the unit tests. My changes now pass all unit tests for Python 3! :)

[Minzhe]

Hi, I try to install the libpgm in my anaconda python3 environment, but got error.

$sudo python setup.py install
and it gave me like this:
byte-compiling /Applications/anaconda/lib/python3.5/site-packages/utils/bntextutils.py to bntextutils.cpython-35.pyc
File "/Applications/anaconda/lib/python3.5/site-packages/utils/bntextutils.py", line 22
print "%s --> %s" % (e[0], e[1])
^
SyntaxError: invalid syntax

running install_egg_info
Removing /Applications/anaconda/lib/python3.5/site-packages/libpgm-1.3-py3.5.egg-info
Writing /Applications/anaconda/lib/python3.5/site-packages/libpgm-1.3-py3.5.egg-info

I think there is still some bug about the print compatibility. Could you check that?

[cs224]

@Minzhe : I have the same issue as you mentioned above. I've just created a pull request for the fix.