Breaking Change : Controlling RFC Compliance

[dhubler]

Previously you set a global variable to put your server into strict compliance (namespaced JSON) or relaxed compliance (normal JSON)

Now, you simply pass in headers Accept: application/yang-data+json and/or Content-Type: application/yang-data+json to get compliance and don't to get relaxed JSON.

https://github.com/freeconf/restconf#compliance-with-rfc

Additionally, you can put server into mode to disallow relaxed compliance.

For notifications that use text/event-stream, there's a URL param ?simplified to get relaxed compliance (thinking I should have called it relaxed now)