* Remove extra pyprojects and update changelog docs
* Add script for rendering the changelog
* Add docs for how to release the spec
* Move legacy changelogs out of the way
* Inline resolve_references in dump-swagger
Since this is the only bit of the old templating system we still use, let's
inline it.
OrederedLoader and OrderedDict are now redundant, because all dicts in Python
preserve insertion order.
* Remove the old templating system
We've now replaced the old templates with hugo, so we can get rid of this mess.
