[PyQt] ANN: dip v0.4 Released

[Phil Thompson]

dip v0.4 has been released. This includes a complete rewrite of the
dip.shell module and a substantial rewrite of the dip.ui module.

The documentation
(http://www.riverbankcomputing.com/static/Docs/dip/index.html) now includes
a roadmap to v1.0 and an architectural and module overview.

Although dip is not yet recommended for production use, as the API is
subject to change until v1.0, I don't expect the current API to undergo any
significant changes.

dip is an application framework, primarily for PyQt applications, that
supports Python v2.6, v2.7 and v3. It includes the following features:

- a declarative type system
- interfaces and adapters
- the ability to define GUIs declaratively
- the ability to automate GUIs
- a system for defining and accessing new types of storage
- a plugin system

A key feature is that you can migrate an existing application to dip as
part of day-to-day maintenance.

Phil