Scripts do not run on Python 3

[frreiss]

The script docs/scripts/skeleton2conll.py only runs on Python 2. That version of Python is no longer supported by Python. docs/scripts/map_all_to_conll.py is also affected, as it depends on the other script.

[sameer-pradhan]

@frreiss, Thanks for bringing this to our attention.
We are currently in the process of somewhat overhauling the repository and making a few fundamental changes that would (hopefully) allow a more streamlined access to the data and code.
If you don't see any updates in the next couple of weeks, please ping us back.

[frreiss]

Thanks for the update, @sameer-pradhan. Here's a link to a patched version of skeleton2conll.py that runs on Python 3 if you need it: https://gist.github.com/frreiss/bdb1defa5d7827951ae1d948346362b6