setup.py does not support Python 3.5

[prehensilecode]

With Python 3.5.0, running python3.5 setup.py raises error:

$ python3.5 setup.py build
  File "setup.py", line 7
    print "Error: you must install SWIG first."
                                              ^
SyntaxError: Missing parentheses in call to 'print'

[macd]

A more serious error is that the file numpy_helper.hpp uses the function PyString_FromStringAndSize which is not available in Python 3

[hnykda]

There are probably more - e.g. xrange at https://github.com/wiseio/paratext/blob/master/python/paratext/core.py#L192. I am going to add new issue with Python 3.5 support.

[deads]

This is now fixed in master.