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CHANGES.txt
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CHANGES.txt
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Traits CHANGELOG
================
Release 4.4.0
-------------
The major new feature in this release is a new adaptation mechanism in the
``traits.adaptation`` package. The new mechanism is intended to replace the
older traits.protocols package. Code written against ``traits.protocols`` will
continue to work, although the ``traits.protocols`` API has been deprecated,
and a warning will be logged on first use of ``traits.protocols``. See the
'Advanced Topics' section of the user manual for more details.
The release also includes improved support for using Cython with `HasTraits`
classes, some new helper utilities for writing unit tests for Traits events,
and a variety of bug fixes, stability enhancements, and internal code
improvements.
Change summary since 4.3.0
New features
* The adaptation mechanism in Traits, formerly based on the 'traits.protocols'
package, has been replaced with the more robust 'traits.adaptation'
package. (fc1d74a)
* Added utility function for importing symbols (name, classes, functions)
by name: 'traits.util.api.import_symbol'.
* Users can set a global tracer, which receives all traits change events:
`traits.trait_notifiers.set_change_event_tracers`
Enhancements
* Update benchmark script. (9f0a7a5)
* traits.util.deprecated: use module logger instead of root logger. (cc8988d)
* Provide an informative message in AdaptationError. (da1d691)
* Allow HasTraits classes to be cythonized. (ab62482)
* Improve tests for cythonization support. (2fb0661)
* Extending various trait testing helpers (9d3bd38)
Refactoring
* The Traits notification code has been reworked to remove code duplication,
and test coverage of that code has been significantly improved. (7269ccd)
Fixes
* PR #93: Fix Adapter object initialization.
* Issue #95: Fix cyclic garbage arising from use of the WeakRef trait type.
* Issue #97: `TraitSetObject.copy` now returns a plain set
rather than an uninitialized `TraitSetObject` instance.
* Issue #100: Fix cyclic garbage arising from dynamic trait change handlers.
* Fix race condition when removing a traits listener. (3f318a9)
* Fix ugly interaction between DelegatesTo change handlers, dynamic change
handlers and two levels of dynamic intialization. (56da71a)
* Use a NullHandler for all 'traits' loggers. (23d4708)
* Fix race condition in TraitChangeNotifyWrapper.listener_deleted (6eea8d2)
* Fix leaking notifiers. (9bcbd62)
* Fix failing special instance trait events. (87d5a8f)
* Fix hiding KeyError exception inside trait default initialize method.
(5e7e3bc)