Migration to Python3

Python2.7 EOL is coming:

https://mail.python.org/pipermail/python-dev/2018-March/152348.html

To prepare our scripts for this I recommend doing the following:

1.  3.6 32 and 64 bit wheel files are in the local pip index, esp the ones from goehke. If there are any more, please let me know.
2.  Validation has already been built and run under 3 64 bit. The SVN functionality has been dropped in 3 - I couldn't not get it to compile and it does not do the job it was internded for.
3.  Bamboo runs tox tests for 2.7, 3.6 (32 bit) and 3.6 (64bit) on the larger products.
4. For each repo Bamboo builds, it produces a report from 2to3 script.
5. I’ve started using
   https://pypi.python.org/pypi/six
   to provide 2.7 to 3 compatibility at a code level. It was included in most of the repo’s but not being used in earnest. I encourage people to start using this module to make the transition easier.
   
   
6. As I use individual scripts, I transfer it to using python3, preferably 64bit. Again, I encourage people to do likewise. The mods aren’t difficult, and the six module is useful here.
7. One caveat is that not everyone has 64bit machines; I suspect by the time the code is working under python3, the machines will have been replaced.