release process for 1.1 libraries?

Hi,
What do people think about releasing libraries with 1.1 draft spec
support?  Gregg Kellogg has done some great work adding 1.1 support to
jsonld.js and pyld.  We'd like to release that code for people to use but
I'm unsure on how to best do it.  Once the code is out there people will
start using and depending on the features.  If changes need to be made
before 1.1 is final, it would be nice to be able to change anything as
needed.

Libraries can use a semantic versioning scheme, and if the spec changes,
that will bump up the version.  But how do we deal with the JSON-LD data
itself?  We want to avoid needing tricky compatibility code for possible
old draft behavior.  Is this enough of a problem to even need a solution?
"@version": "1.1-draft-1" or similar might be nice, but that doesn't have
the 1.0 processor fail behavior.  "@version": [1.1, "draft-1"] could work,
and arrays would even allow a string "1.1" version, but maybe that's too
confusing.  Other schemes are possible too, for 1.1 processor to read other
flags, etc.  Thoughts?

The easiest thing to do is release the libs, and document that all 1.1
features are for draft specs and subject to change.  User beware.

-dave