ANN: Versioned Domain Model (v0.2) with Support for SQLAlchemy

Dear All,

v0.2 of versioned domain model is now finally done -- it was 95% 
complete in Feb but it has taken another 3 months to iron out the last 
bugs and polish up!

Apart from being a concrete implementation of a system for versioning 
data(bases) -- and therefore important for efforts to do more 
collaborative development of data [1] -- it is also a crucial piece of 
infrastructure for various of our current and future projects such as 
CKAN, Microfacts/Weaving History, and Public Domain Works.

Regards,

Rufus

[1]:<http://blog.okfn.org/2007/02/20/collaborative-development-of-data/>

## Versioned Domain Model (v0.2) with Support for SQLAlchemy

Versioned Domain Model (vdm) is a package which allows you to 'version'
your domain model in the same way that source code version control
systems such as subversion allow you version your code. In particular,
versioned domain model versions a complete model and not just individual
domain objects (for more on this distinction see below).

At present the package is provided as an extension to SQLAlchemy and
SQLObject (with an extension to Elixir in progress).

### Getting It