current state of novaclient

HI guys, I am not sure what is the current state of the novaclient implementation. I have a lot of questions, so I am just going to list them here.

In the documentation on https://github.com/rackspace/python-novaclient, I read that novaclient is an implementation of OpenStack Nova API.

1. Is OpenStack Nova API different from Rackspace server API (http://docs.rackspacecloud.com/servers/api/cs-devguide-latest.pdf)?

2. Where are the Openstack Nova APIs defined?

3. Where is novaclient in terms of implementing the APIs (100% or less). It would be nice if you point me to features that are missing.

4. I did not find any reference to nova volumes in the novaclient (cli/api) or in the rackspace server api e.g. How do I do the equivalent of euca-attach-volume using novaclient?

5. Is "nova image-create" implemented?

6. Can I create an image from a volume like euca-bundle-vol does?

Thanks