[PyQt] ANN: dip v0.2 Released

[Phil Thompson]

dip v0.2 has been released and can be downloaded from the usual place.
Most changes are in response to feedback gratefully received rather than
new areas of functionality.

>From the NEWS file...

- Python v2.6 and v2.7 are now supported.

- Attribute observers are now only invoked if an attribute has actually
  changed.

- Attribute observers are now passed an AttributeChange instance that
  fully describes the change to the attribute.

- The _default_xxx() methods for identifying a method for providing an
  attribute's default value have been replaced by a type's 'default'
  decorator.

- The _get_xxx() methods for identifying a method to be used as an
  attribute's getter have been replaced by a type's 'getter' decorator.

- The _set_xxx() methods for identifying a method to be used as an
  attribute's setter have been replaced by a type's 'setter' decorator.

- The _observe_xxx() methods for identifying a method to be used as an
  implicit observer of an attribute have been replaced by a type's
  'observer' decorator.

- Support for automatically invoking type factories has been removed.  For
  example, 'attribute = Str()' must be used instead of 'attribute = Str'.

- Support for automatically invoking view item factories has been removed.
  For example, 'MessageArea()' must be used instead of 'MessageArea'.

- 'Adaptor' has been renamed 'Adapter' throughout dip.

- The dip.model.BaseType class has been renamed to TypeFactory.

- The dip.model.ValueType class has been renamed to ValueTypeFactory.

- The dip.model.ContainerType class has been renamed to
  ContainerTypeFactory.

- The dip.model.MutableType class has been renamed to MutableTypeFactory.

- The dip.model.ValueTypeFactory.default() method has been replaced by the
  __call__() method.

- dip.model.ModelType has been removed as it is now equivalent to
  Instance(TypeFactory).

- dip.model.TypeSpecificationError has been removed.

- MetaInterface and MetaModel are now part of the dip.model API.

- dip.plugins.Plugin now implements IPlugin so that sub-classes don't have
  to.

- The default pickle protocol used is v2.

Phil