distributed: AstronInternalRepository et al is now compatible with Python 3

[ksmit799]

This closes issue #23

[drewc5131]

You are missing quite a bit needed to close that issue. For instance, you still have a ton of xranges, longs, and other things that are gone in python 3.

I have all of it fixed in my fork, however, it may screw up support with python 3, and the formatting of all the files got screwed up, so I probably won't make a pull request.

[ksmit799]

@drewc5131 I've put through some more changes. Let me know if I've missed anything.

On another note, I currently don't have any readily available code to test Python 2 compatibility, so more obscure changes might mess something up (I'm on vacation currently).

[drewc5131]

Yeah the problem is i dont think these changes can be merged due to them possibly breaking python 2 support. However, I personally would allow them in if you added some if statements to help with not backwards compatible changes, but I can't say whether astron will allow them. Try adding

if sys.version_info >= (3, 0):
    # stuff that only works with python 3, not with 2

else:
    # stuff that only works with 2, not 3

I can see this being used for the get bytes (though that may not be required, not sure), and for the removal of the long type, which i can definitely recommend doing that for.

[ksmit799]

Yeah, everything so far should be backwards compatible (range is slightly slower then xrange on Python 2). Just not sure about the (int, long) camparison, that will have to be tested.

[anonymous1234566]

I think breaking python 2 support is fine since python2 is no longer officially supported